案例+图解带你一文读懂SVG （2.6W+字）

发表于 2年以前 | 总阅读数：667 次

涸辙遗鲋，旦暮成枯；人而无志，与彼何殊。

前言

上面的图就是一个svg的动画，来自于一个SVG动画平台（Svgator[1]）。在2016年左右（记不太清楚）我入职了一个广告公司，做的基本都是动画类的活，当时比较小白基本动画都是CSS3来写的，后来因为某些项目性能要求比较高结缘了Canvas。再后来就是一次偶然看到了SVG的线条动画，当时真的让我眼前一亮，这也就是我初次结缘于SVG。而随着了解的越多越觉得SVG动画真的是很酷炫，它以独特的方式把线条动画展示的淋漓尽致。

下面我们就开始新的征程，开启SVG之旅吧。

简介

SVG 是 Scalable Vector Graphics 的缩写，意为可缩放矢量图形。于 2003年1月14日 SVG 1.1 被Sun公司（已被Oracle公司收购）、Adobe、苹果公司、IBM 以及柯达共同确立成为W3C推荐标准。

概念

那么SVG究竟是什么呢？

SVG是 Scalable Vector Graphics 的缩写意为可缩放矢量图形
SVG是一个基于文本的开放网络标准，用来定义用于网络的矢量图形
SVG图像在放大或改变尺寸的情况下其图形质量不会有所损失，因此能够优雅而简洁地渲染不同大小的图形，并和CSS，DOM，JavaScript和SMIL等其他网络标准无缝衔接
SVG 使用 XML 格式定义图形
SVG是万维网联盟的标准与诸如 DOM 和 XSL 之类的 W3C 标准是一个整体

优势

相对于其他格式的图像，SVG的优势有很多：

SVG 与 JPEG 和 GIF 图像比起来，尺寸更小，且可压缩性更强。
SVG图像中的文本是可选的，同时也是可搜索的，且可以与 JavaScript 技术一起运行
SVG可在图像质量不下降的情况下被放大和缩小
SVG可被非常多的工具读取和修改（比如文本编辑器）
SVG图像不依赖分辨率，可在任何的分辨率下被高质量地打印
SVG文件是纯粹的XML
SVG是开放的标准

缺点

SVG复杂度越高渲染速度就会越慢（任何过度使用DOM的应用都不快）
SVG不适合游戏应用，只能结合Canvas来实现
SVG不能动态的修改动画内容

PS: 需要注意的是因为XML和HTML不同，XML是区分大小写的，而SVG是使用XML格式来定义图形，所以在编写SVG的的时候元素和属性必须按标准格式书写。

浏览器兼容性

这里直接放一张 Can I Use[3] 的详细兼容表。

image.png

以上就是SVG的简介，下面将进入SVG的学习。

语法

SVG的语法如下：

  <svg>
    <circle cx="100" cy="100" r="50"/>
  </svg>
复制代码

如上面的语法所示，SVG的绘制其实就是一个SVG标签，然后在标签内绘制你要绘制的内容，比如上面的语法是在SVG标签中绘制了一个圆形(cx、cy为圆的坐标，r为圆的半径)。

代码如下：

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>SVG - 语法</title>
</head>
<body>
  <svg>
    <circle cx="100" cy="100" r="50"/>
  </svg>
</body>
</html>
复制代码

效果如下：

image.png

属性

SVG的属性有哪些？

width、height

width、height设置用来设置SVG的宽高。

举个例子看一下：设置SVG的宽高为300 * 300

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>SVG - 属性</title>
</head>
<body>
  <svg width="300" height="300">
    <circle cx="100" cy="100" r="100"/>
  </svg>
</body>
</html>
复制代码

效果如下：

注意：在不设置宽高的情况下，默认为300 * 150，当内部元素大于300 * 150时，大于部分会被隐藏。

举个例子看一下：在坐标为（100， 100）的地方绘制一个半径为100的圆

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>SVG - 属性</title>
</head>
<body>
  <svg>
    <circle cx="100" cy="100" r="100"/>
  </svg>
</body>
</html>
复制代码

效果如下：

image.png

viewBox

viewBox 属性定义了SVG中可以显示的区域。

语法：viewBox="x y w h" x、y为起始点，w、h为显示区域的宽高。

看字面意思，我觉得你肯定是会理解错的，举个例子看一下：

下面我们将在一个尺寸为300 * 300的SVG中绘制一个坐标为（100, 100）半径为100的圆，同时我们加上viewBox属性为"0 0 100 100"

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>SVG - 属性</title>
</head>
<body>
  <svg width="300" height="300" viewBox="0 0 100 100">
    <circle cx="100" cy="100" r="100"/>
  </svg>
</body>
</html>

复制代码

效果如下：

image.png

如图SVG里面的圆只显示了一部份，原因是viewBox定义了一个：从（0, 0）点开始，宽高为100 * 100的显示区域。而这个100 * 100的显示区域会放到300 * 300(svg宽高)的SVG中去显示，整体就放大了3倍。

version

version属性用于指明SVG的版本，也就是指明SVG文档应该遵循的规范。version属性纯粹就是一个说明，对渲染或处理没有任何影响。且目前只有1.0 和 1.1这两个版本。

示例：

<svg version="1.1">
  // ...
</svg>

复制代码

下面是来自维基百科的一些版本信息：

版本 1.x

SVG 1.0于 2001 年 9 月 4 日成为W3C 推荐标准。
SVG 1.1 于 2003 年 1 月 14 日成为 W3C 推荐标准。SVG 1.1 规范是模块化的，以便允许将子集定义为配置文件。除此之外，SVG 1.1 和 SVG 1.0 之间几乎没有区别。
SVG Tiny和SVG Basic（移动 SVG 配置文件）于 2003 年 1 月 14 日成为 W3C 推荐标准。这些被描述为 SVG 1.1 的配置文件。
SVG Tiny 1.2 于 2008 年 12 月 22 日成为 W3C 推荐标准。它最初是作为计划中的 SVG Full 1.2 的配置文件（后来被 SVG 2 放弃），但后来被重构为独立规范。它通常得不到很好的支持。
SVG 1.1 第二版，包括所有勘误表和说明，但在 2011 年 8 月 16 日发布的原始 SVG 1.1 没有新功能。
SVG Tiny 1.2 Portable/Secure，SVG Tiny 1.2 配置文件的更安全子集，于 2020 年 7 月 29 日作为 IETF 草案标准引入。也称为 SVG Tiny P/S。SVG Tiny 1.2 Portable/Secure 是BIMI草案标准的要求。

版本 2

SVG 2 删除或弃用了 SVG 1.1 的一些特性，并结合了HTML5和Web 开放字体格式的新特性：

例如，SVG 2 删除了几个字体元素，例如glyph和altGlyph（由 WOFF 字体格式替换）。
不推荐使用该xml:space属性以支持 CSS。
添加了HTML5 功能，例如translate和data-*属性。
SVG Tiny 1.2 中的文本处理功能被注释为包含在内，但尚未在文本中正式化。其他一些 1.2 特性是精选的。但 SVG 2 通常不是 SVG tiny 1.2 的超集。
SVG 2 于 2016 年 9 月 15 日进入候选推荐阶段，修订版于 2018 年 8 月 7 日和 2018 年 10 月 4 日发布。最新草案于 2022 年 3 月 21 日发布。

xmlns和xmlns:xlink

上面我们说过SVG使用XML格式定义图形，SVG文件是纯粹的XML文件。

在XML中，标签和属性属于命名空间，这是为了防止来自不同技术的标签和属性发生冲突。例如在SVG中存在a标签，在HTML中也存在a标签，那么怎么区分这个a标签属于哪一种技术，这就需要使用命名空间了。加入命名空间以后我们就能知道哪一个是svg:a，哪一个又是html:a，这样我们就可以区分出不同的标签和属性。

xmlns用于声明命名空间（namespace），在此声明之下的所有子标签都属于这个空间内。这里看起来是一个url，但实际上仅仅是一个字符串，这样使用只是惯例。因此很多时候都会被称为”namespace url” 而不是”namespace name”。

当我们在SVG中加入xmlns时，因为它定义了默认命名空间，因此不需要前缀，我们直接在SVG标签中写一个a标签，a标签和UA就知道它是SVG的a标签而不是HTML的a标签

xmlns:xlink 表示前缀为xlink的标签和属性，应该由理解该规范的UA 使用xlink规范来解释。

注解：UA是User Agent的简称。User Agent是Http协议中的一部分，属于头域的组成部分。通俗地讲UA是一种向访问网站提供你所使用的浏览器类型、操作系统、浏览器内核等信息的标识。通过这个标识，用户所访问的网站可以显示不同的排版，从而为用户提供更好的体验或者进行信息统计。

示例：

<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
    // ......
</svg>

复制代码

基本图形

基本图形其实就是我们插入到SVG标签中的元素，如上面示例中的圆形（circle）。

下面我们将依次介绍几个基本图形。

圆形（circle）

circle 标签能在屏幕上绘制一个圆形

语法：<circle cx="100" cy="100" r="100"/>

属性：cx、cy为圆的坐标，r为圆的半径

示例：

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>SVG - 基本图形</title>
</head>
<body>
  <svg width="300" height="300">
    <circle cx="100" cy="100" r="100"/>
  </svg>
</body>
</html>
复制代码

效果：

image.png

矩形（rect）

rect标签能在屏幕上绘制一个矩形

语法：<rect x="0" y="0" rx="5" ry="5" width="300" height="200"/>

属性：x、y为矩形的起始点坐标，rx、ry为圆角x、y轴方向的半径， width、height为矩形的宽高

示例：

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>SVG - 基本图形</title>
</head>
<body>
  <svg width="300" height="300">
    <rect x="0" y="0" rx="5" ry="5" width="300" height="200"/>
  </svg>
</body>
</html>
复制代码

效果：

image.png

椭圆（ellipse）

ellipse标签比circle标签功能更强大，ellipse标签也可以实现圆形的绘制，并且还可以分别缩放圆形的长轴半径和短轴半径，从而达到椭圆的效果。

语法：<ellipse cx="100" cy="100" rx="100" ry="50"/>

属性：cx、cy为椭圆的坐标，rx为椭圆的x轴半径、ry为椭圆的y轴半径

示例：

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>SVG - 基本图形</title>
</head>
<body>
  <svg width="300" height="300">
    <ellipse cx="100" cy="100" rx="100" ry="50"/>
  </svg>
</body>
</html>
复制代码

效果：

image.png

线条（line）

line标签可以根据两点的坐标绘制一条直线

语法：<line x1="10" x2="50" y1="110" y2="150"/>

属性：x1、y1为起点的坐标，x2、y2为终点的坐标

示例：

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>SVG - 基本图形</title>
</head>
<body>
  <svg width="300" height="300">
    <!-- 不设置样式属性 style 是看不出效果的 -->
    <line x1="50" x2="50" y1="200" y2="50" style="stroke: #000000;"/>
  </svg>
</body>
</html>
复制代码

效果：

image.png

折线（polyline）

polyline标签可以把很多个点链接在一起成为一条折线。

语法：<polyline points="0 0, 20 40, 70 80, 100 90, 200 30, 250 50" />

属性：points为点集数列，其中每个点都必须包含2个数字，一个是x坐标，一个是y坐标。

示例：

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>SVG - 基本图形</title>
</head>
<body>
  <svg width="300" height="300">
    <!-- 不设置样式属性style是看不出效果的 并且polyline默认为填充需要把fill属性设置为none -->
    <polyline points="0 0, 20 40, 70 80, 100 90, 200 30, 250 50" fill="none" style="stroke: #000000;" />
  </svg>
</body>
</html>
复制代码

效果：

image.png

多边形（polygon）

polygon标签和polyline标签类似，都是由很多个点链接在一起的。但不同的是polygon路径中的最后一个点和第一个点是默认闭合的。

语法：<polygon points="0 0, 20 40, 70 80, 100 90, 200 30, 250 50" />

属性：points为点集数列，其中每个点都必须包含2个数字，一个是x坐标，一个是y坐标。

示例：和折线（polyline）同样的数据

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>SVG - 基本图形</title>
</head>
<body>
  <svg width="300" height="300">
    <!-- 不设置样式属性style是看不出效果的 并且polygon默认为填充需要把fill属性设置为none -->
    <polygon points="0 0, 20 40, 70 80, 100 90, 200 30, 250 50" fill="none" style="stroke: #000000;" />
  </svg>
</body>
</html>
复制代码

效果：

image.png

路径（path）

path标签是所有图形中最复杂的，但他也是最强大的。在SVG中最常用的图形就是path标签，他可以绘制圆形、椭圆、矩形、线条、折线、多边形、贝塞尔曲线等。

语法：<path d="M50 50 H 200 V 200 H 50 L 50 50"/>

属性：d为一个点集数列以及其它绘制路径的信息。

示例：

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>SVG - 基本图形</title>
</head>
<body>
  <svg width="300" height="300">
    <path d="M50 50 H 200 V 200 H 50 L 50 50" fill="none" style="stroke: #000000;"/>
  </svg>
</body>
</html>
复制代码

效果：

image.png

看着上面的例子是不是很懵X？感觉就是一个简单的正方形但是怎么看都看不懂，什么M、H、V和L，根本不知道是啥。

下面我们着重说一下路径（path），让我们从此能看懂SVG。

路径（path）

上面对路径（path）的举例其实已经是一个很简单的例子了，但是呢我们还是发现我们看不懂，下面我们就看看路径（path）里的这个属性d究竟是什么玩意。

命令

path标签的图形形状是通过属性d来定义的，属性d的值是以：命令 + 参数的形式进行组合的，命令又是通过关键字来表示的。

那么究竟有哪些命令呢？我总结了一下概括为以下10个命令：

M = Move to
L = Line to
H = Horizontal Line to
V = Vertical Line to
Q = Quadratic Bezier Curve to
T = Smooth Quadratic Bezier Curve to
C = Curve to
S = Smooth Curve to
A = Elliptical Arc
Z = close path

下面我们将命令分为直线命令和曲线命令划分开，依次讲解其含义。

直线命令

直线命令的意思就是通过两个点画他们之间的直线。

注意：以下所有命令中大写为绝对定位小写为相对定位，后续的命令亦如此

M（Move to）

M命令其实就是把画笔移动到某个点，就好像画笔提起来以后移动到一个新的位置准备开始绘制。但因为仅仅是移动画笔而没有绘制，所以M命令经常出现在路径的起始点，用来指明画笔应该从何处开始绘制。

每一段路径都必须以M命令开头，如果有多个M命令则表示新路径的开始。

语法：M x y 或者 m x y

参数：x、y为坐标

因为M命令只是移动画笔而不画线，所以就先不给出示例，咱们结合下一个命令一起给示例。

L（Line to）

L命令会绘制一点并且和之前的点（也就是L命令前面的点）连成一条直线。

语法：L x y 或者 l x y

参数：x、y为坐标

示例：

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>SVG - path</title>
</head>
<body>
  <svg width="300" height="300">
    <!-- 从起始点（50， 20）画一条到（250， 20）的直线 -->
    <path d="M50 20 L250 20" style="stroke: #000000;"/>
    <!-- 从起始点（50， 50）画一条到（250， 50）的直线 和 从起始点（50， 100）画一条到（250， 100）的直线 -->
    <!-- M命令为多个时，后面的M命令为先线段的起始点 -->
    <path d="M50 50 L250 50 M50 100 L250 100" style="stroke: #ff0000;"/>
    <!-- 从起始点（50， 150）画一条到（250， 150）的直线 -->
    <!-- M命令后面连续跟着多个坐标点，除了第一个坐标点，后面的全部默认为隐式的L命令 -->
    <path d="M50 150 250 150" style="stroke: #00ff00;"/>
    <!-- 从起始点（50， 200）画一条到（250， 200）又到（250，250）的折线 -->
    <!-- 多个L命令连续可以省略后面的L命令 -->
    <path d="M50 200 L250 200 250 250 " fill="none" style="stroke: #0000ff;"/>
  </svg>
</body>
</html>
复制代码

效果：

image.png

是不是觉得瞬间就明白了还觉得挺有意思？咱们继续看更有意思的。

H（Horizontal Line to）

H命令可以从之前的点绘制一条水平的直线，H命令可以等价于y值和之前点相同的L命令

语法：H x 或者 h x

参数：x为X轴坐标

示例：

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>SVG - path</title>
</head>
<body>
  <svg width="300" height="300">
    <!-- 从起始点（50， 20）画一条X轴为250的水平直线 -->
    <path d="M50 20 H250" style="stroke: #000000;"/>
  </svg>
</body>
</html>
复制代码

效果为：

image.png

V（Vertical Line to）

V命令可以从之前的点绘制一条垂直的直线，V命令可以等价于x值和之前点相同的L命令

语法：V y 或者 v y

参数：y为Y轴坐标

示例：

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>SVG - path</title>
</head>
<body>
  <svg width="300" height="300">
    <!-- 从起始点（50， 20）画一条Y轴为250的垂直直线 -->
    <path d="M50 20 V250" style="stroke: #000000;"/>
  </svg>
</body>
</html>
复制代码

效果：

image.png

PS：注意连续的H命令和V命令取大值

示例：

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>SVG - path</title>
</head>
<body>
  <svg width="300" height="300">
    <path d="M50 20 H200 100" style="stroke: #000000;"/>
    <path d="M50 20 V200 100" style="stroke: #ff0000;"/>
  </svg>
</body>
</html>
复制代码

效果：

image.png

Z（Close path）

Z命令是一个闭合命令，他会从当前点画一条直线到路径的起始点。 Z命令因为没有参数所以Z和z效果一样，所以不区分大小写，

语法：Z 或者 z

参数：无

示例：

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>SVG - path</title>
</head>
<body>
  <svg width="300" height="300">
    <path d="M50 20 H200 V200 Z" fill="none" style="stroke: #000000;"/>
  </svg>
</body>
</html>
复制代码

效果：

image.png

曲线命令

曲线命令顾名思义就是绘制平滑的曲线

Q（Quadratic Bezier Curve to）

Q命令可以用来绘制一条二次贝塞尔曲线，二次贝塞尔曲线需要一个控制点，用来确定起点和终点的曲线斜率。

语法：Q x1 y1, x y 或者 q x1 y1, x y

参数：x、y为终点位置，x1、y1为控制点。

咦~ 有没有到发现，参数中只有终点没有起点？其实起点就是M命令

示例：

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>SVG - path</title>
</head>
<body>
  <svg width="300px" height="300px">
    <path d="M50 100 Q 175 200 300 100" fill="none" style="stroke: #ff0000;"/>
  </svg>
</body>
</html>

复制代码

效果：

image.png

T（Smooth Quadratic Bezier Curve to）

T命令时一个延长二次贝塞尔曲线的简化命令，T命令可以通过前一个控制点推断出后一个控制点，这也就是为什么T命令只需要一个坐标的原因。

需要注意的是T命令的的前面必须有一个Q命令或者其他的T命令。如果T命令单独使用，那么控制点就会被认为和终点是同一个点，所以画出来的将是一条直线

语法：T x y 或者 t x y

参数：x、y为终点位置。

示例：

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>SVG - path</title>
</head>
<body>
  <svg width="600px" height="300px">
    <path d="M50 100 Q 175 200 300 100 T 600 100 " fill="none" style="stroke: #ff0000;"/>
  </svg>
</body>
</html>

复制代码

效果：

image.png

C（Curve to）

C命令可用来绘制一条三次贝塞尔曲线，相对于二次贝塞尔曲线多了一个控制点。

语法：C x1 y1, x2 y2, x y 或者 c x1 y1, x2 y2, x y

参数：x、y为终点位置，x1、y1为曲线起始点的控制点，x2、y2为曲线终止的控制点。

示例：

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>SVG - path</title>
</head>
<body>
  <svg width="300" height="300">
    <path d="M50 50 C 100 100, 200 100, 250 50" fill="none" style="stroke: #000000;"/>
    <path d="M50 200 C 100 250, 200 150, 250 200" fill="none" style="stroke: #ff0000;"/>
  </svg>
</body>
</html>
复制代码

效果：

image.png

S（Smooth Curve to）

三次贝塞尔曲线的S命令和二次贝塞尔曲线的T命令比较相似。S命令也可以用来创建与前面一样的贝塞尔曲线，但如果S命令跟在一个C命令或者另一个S命令的后面，那么它的第一个控制点，就会被假设成前一个控制点的对称点。

如果S命令单独使用，前面没有C命令或者另一个S命令，那么它的两个控制点就会被假设为同一个点。

语法：S x2 y2, x y 或者 s x2 y2, x y

参数：x、y为终点位置，x2、y2为曲线终止的控制点。

示例：首先先画一段曲线

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>SVG - path</title>
</head>
<body>
  <svg width="300px" height="300px">
    <path d="M10 100 C 40 10, 65 10, 95 100" fill="none" style="stroke: #ff0000;"/>
  </svg>
</body>
</html>

复制代码

效果如下：

image.png

然后我们再加一段S命令看看

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>SVG - path</title>
</head>
<body>
  <svg width="300px" height="300px">
    <path d="M10 80 C 40 10, 65 10, 95 80 S 150 150, 180 80" fill="none" style="stroke: #ff0000;"/>
  </svg>
</body>
</html>
复制代码

效果为：

image.png

三次贝塞尔曲线相对于二次贝塞尔曲线拥有更大的自由度，但两种曲线能达到的效果是差不多的。最终选择使用哪种贝塞尔曲线，通常取决于需求，以及对曲线对称性的依赖程度。

A（Elliptical Arc）

A命令用于画弧形，它可以截取圆或椭圆的弧形成的曲线

语法： A rx ry x-axis-rotation large-arc-flag sweep-flag x y 或者 a rx ry x-axis-rotation large-arc-flag sweep-flag x y

参数：

rx、ry分别为X轴的半径和Y轴的半径
x-axis-rotation为弧度在X轴的旋转角度
large-arc-flag决定弧线是大于还是小于180度，0表示小角度弧，1表示大角度弧
sweep-flag为弧的方向，0表示从起点到终点沿逆时针画弧，1表示从起点到终点沿顺时针画弧
x、y为弧形的终点

示例：

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>SVG - path</title>
</head>
<body>
  <svg width="300px" height="1000px">
    <path d="M10 100 50 100  A 30 50 0 0 1 150 100 L 200 100" fill="none" style="stroke: #ff0000"/>
    <!-- 旋转45度的弧（第三个参数） -->
    <path d="M10 200 50 200  A 30 50 45 0 1 150 200 L 200 200" fill="none" style="stroke: #ff0000"/>
    <!-- 1表示大角度弧（第四个参数） -->
    <path d="M10 300 50 300  A 30 50 -45 1 1 150 300 L 200 300" fill="none" style="stroke: #ff0000"/>
    <!-- 0逆时针（第五个参数） -->
    <path d="M10 400 50 400  A 30 50 0 1 0 150 400 L 200 400" fill="none" style="stroke: #ff0000"/>

  </svg>
</body>
</html>
复制代码

效果为：

image.png

填充和轮廓

在上面的例子中我们经常用这样的属性：

fill="none" style="stroke: #ff0000"
复制代码

我想大家看着肯定也会想这是啥玩意？其实这就是我们接下来要说的内容。

fill

fill属性用于填充图形的颜色

语法：fill= "colour" 或者 style="fill: colour"

示例：

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>SVG - fill</title>
</head>
<body>
  <svg>
    <circle cx="80" cy="50" r="50" />
    <circle cx="200" cy="50" r="50" fill="#ff0000"/>
  </svg>
</body>
</html>

复制代码

效果：

image.png

从上面的示例中可以看出，在不设置fill属性的时候，其实默认是黑色的填充，这也就是为什么上面的很多例子我们设置了 fill='none' 其实就是去掉默认填充。

fill属性其实还有一些延伸属性：

fill-opacity

fill-opacity属性用于设置填充颜色的透明度

示例：

<pre style="box-sizing: border-box;font-size: 16px;font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;margin-top: 10px;margin-bottom: 10px;overflow: auto;border-radius: 5px;box-shadow: rgba(0, 0, 0, 0.55) 0px 2px 10px;color: rgb(0, 0, 0);font-style: normal;font-variant-ligatures: normal;font-variant-caps: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 0px;text-transform: none;widows: 2;word-spacing: 0px;-webkit-text-stroke-width: 0px;background-color: rgb(255, 255, 255);text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;">```
<span style="box-sizing: border-box;color: rgb(245, 171, 53);font-weight: bold;line-height: 26px;"><!DOCTYPE <span style="box-sizing: border-box;line-height: 26px;">html><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">lang=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"en"><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">charset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"UTF-8"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">http-equiv=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"X-UA-Compatible" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"IE=edge"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">name=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"viewport" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"width=device-width, initial-scale=1.0"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title>SVG - fill<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"400" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"400"><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">circle <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cx=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"80" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cy=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">r=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" /><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">circle <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cx=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"200" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cy=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">r=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#ff0000"/><br style="box-sizing: border-box;"></br><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">circle <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cx=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"80" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cy=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"130" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">r=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#00ff00"/><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">circle <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cx=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"200" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cy=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"130" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">r=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#00ff00" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill-opacity=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0.5"/><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html><br style="box-sizing: border-box;"></br>复制代码<br style="box-sizing: border-box;"></br>


效果：

![](https://oss-cn-hangzhou.aliyuncs.com/codingsky/cdn/img/2022-09-05/940e4963fd437dad5af1931e7224150e)
image.png
### fill-rule

fill-rule属性用来设置复杂形状的填充规则。它有两种填充方式：nonzero 和 evenodd。该属性简单说就是判断某点属于该形状的“内部”还是“外部”。那么判断的规则是什么呢？


#### nonzero

nonzero为默认值，规则为：要判断一个点是否在图形内，从该点作任意方向的一条射线，然后检测射线与图形路径的交点情况。从0开始计数，路径从左向右（顺时针）穿过射线则计数加1，从右向左（逆时针）穿过射线则计数减1。得出计数结果后，如果结果是0，则认为点在图形外部，否则认为在内部。

是不是感觉还是有点懵？举个例子看一下。

示例：

PS：上面示例中的绿色三角形只是用来辅助理解的，可以忽略，咱们只需要了解规则是如何填充的就行。

效果图：

image.png

evenodd

规则为：要判断一个点是否在图形内，从该点作任意方向的一条射线，然后检测射线与图形路径的交点的数量。如果结果是奇数则认为点在内部，是偶数则认为点在外部。

直接看示例吧：

示例：

<pre style="box-sizing: border-box;font-size: 16px;font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;margin-top: 10px;margin-bottom: 10px;overflow: auto;border-radius: 5px;box-shadow: rgba(0, 0, 0, 0.55) 0px 2px 10px;color: rgb(0, 0, 0);font-style: normal;font-variant-ligatures: normal;font-variant-caps: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 0px;text-transform: none;widows: 2;word-spacing: 0px;-webkit-text-stroke-width: 0px;background-color: rgb(255, 255, 255);text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;">```
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rgb(0, 128, 128);line-height: 26px;">xlink:href=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#Triangle" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">transform=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"translate(950,188) rotate(120) translate(107,0) rotate(90)" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">overflow=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"visible"  /><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">use <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">xlink:href=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#Triangle" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">transform=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"translate(950,188) rotate(240) translate(107,0) rotate(90)" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">overflow=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"visible"  /><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">use <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">xlink:href=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#Triangle" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">transform=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"translate(950,188) rotate(60) translate(49,0) rotate(-90)" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">overflow=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"visible"  /><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">use <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">xlink:href=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#Triangle" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">transform=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"translate(950,188) rotate(180) translate(49,0) rotate(-90)" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">overflow=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"visible"  /><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">use <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">xlink:href=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#Triangle" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">transform=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"translate(950,188) rotate(300) translate(49,0) rotate(-90)" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">overflow=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"visible"  /><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">g><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html><br style="box-sizing: border-box;"></br><br style="box-sizing: border-box;"></br>复制代码<br style="box-sizing: border-box;"></br>


PS：上面示例中的绿色三角形只是用来辅助理解的，可以忽略，咱们只需要了解规则是如何填充的就行。

效果为：

![](https://oss-cn-hangzhou.aliyuncs.com/codingsky/cdn/img/2022-09-05/7f481bf3146a1139514755f3246a9362)
image.png
stroke
------

stroke属性用来定义线条、文本或元素轮廓的颜色。

语法：`stroke="colour" 或者 style="stroke: colour"`

示例：

效果：

image.pngstroke属性也有一些延伸属性，下面依次介绍一下。

stroke-width

stroke-width属性定义了轮廓的宽度

示例：

<pre style="box-sizing: border-box;font-size: 16px;font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;margin-top: 10px;margin-bottom: 10px;overflow: auto;border-radius: 5px;box-shadow: rgba(0, 0, 0, 0.55) 0px 2px 10px;color: rgb(0, 0, 0);font-style: normal;font-variant-ligatures: normal;font-variant-caps: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 0px;text-transform: none;widows: 2;word-spacing: 0px;-webkit-text-stroke-width: 0px;background-color: rgb(255, 255, 255);text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;">```
<span style="box-sizing: border-box;color: rgb(245, 171, 53);font-weight: bold;line-height: 26px;"><!DOCTYPE <span style="box-sizing: border-box;line-height: 26px;">html><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">lang=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"en"><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">charset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"UTF-8"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">http-equiv=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"X-UA-Compatible" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"IE=edge"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">name=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"viewport" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"width=device-width, initial-scale=1.0"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title>SVG - stroke<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"300" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"300"><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">circle <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cx=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"80" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cy=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">r=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" /><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">circle <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cx=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"200" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cy=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">r=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#ff6666" /><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">circle <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cx=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"80" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cy=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"200" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">r=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#ff6666" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke-width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"5" /><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">circle <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cx=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"200" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cy=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"200" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">r=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#ff6666" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke-width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"10"/><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html><br style="box-sizing: border-box;"></br><br style="box-sizing: border-box;"></br>复制代码<br style="box-sizing: border-box;"></br>


效果：

![](https://oss-cn-hangzhou.aliyuncs.com/codingsky/cdn/img/2022-09-05/68ef011a6ac1c719c8bcd4402d0389f3)
image.png
### stroke-opacity

stroke-opacity属性用于设置轮廓的透明度

示例：

效果：

image.png

stroke-linecap

stroke-linecap属性定义了轮廓终点的形状，该属性有三个值：

butt：默认值，以直边结束线段
round：以圆角结束线段，圆角的半径由stroke-width（轮廓宽度）控制的
square：也是以直边结束线段，但和butt不同的是会在结束位置多出一段由stroke-width（轮廓宽度）大小控制的长度。

示例：

<pre style="box-sizing: border-box;font-size: 16px;font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;margin-top: 10px;margin-bottom: 10px;overflow: auto;border-radius: 5px;box-shadow: rgba(0, 0, 0, 0.55) 0px 2px 10px;color: rgb(0, 0, 0);font-style: normal;font-variant-ligatures: normal;font-variant-caps: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 0px;text-transform: none;widows: 2;word-spacing: 0px;-webkit-text-stroke-width: 0px;background-color: rgb(255, 255, 255);text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;">```
<span style="box-sizing: border-box;color: rgb(245, 171, 53);font-weight: bold;line-height: 26px;"><!DOCTYPE <span style="box-sizing: border-box;line-height: 26px;">html><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">lang=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"en"><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">charset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"UTF-8"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">http-equiv=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"X-UA-Compatible" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"IE=edge"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">name=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"viewport" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"width=device-width, initial-scale=1.0"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title>SVG - stroke<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"300" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"200"><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">g <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#ffff00" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#ff0000" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke-width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"10"><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">path <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke-linecap=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"butt" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">d=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"M20 50 l200 0" /><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">path <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke-linecap=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"round" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">d=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"M20 100 l200 0" /><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">path <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke-linecap=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"square" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">d=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"M20 150 l200 0" /><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">g><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html><br style="box-sizing: border-box;"></br><br style="box-sizing: border-box;"></br>复制代码<br style="box-sizing: border-box;"></br>


效果：

![](https://oss-cn-hangzhou.aliyuncs.com/codingsky/cdn/img/2022-09-05/138dc8bd2a1ab69fd4db533ff2e8346b)
image.png
### stroke-linejoin

stroke-linejoin属性定义了轮廓连接处的样式。样式有三种类型：

- miter：默认值，表示用方形画笔在连接处形成尖角
- round：用圆角连接，实现平滑效果
- bevel：连接处会形成一个斜面

示例：

效果：

image.png

stroke-dasharray

stroke-dasharray属性可以定义轮廓为虚线

语法：stroke-dasharray="xxx"

参数：xxx为一列数字字符串，对应的是：线段空格线段空格......

示例：

<pre style="box-sizing: border-box;font-size: 16px;font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;margin-top: 10px;margin-bottom: 10px;overflow: auto;border-radius: 5px;box-shadow: rgba(0, 0, 0, 0.55) 0px 2px 10px;color: rgb(0, 0, 0);font-style: normal;font-variant-ligatures: normal;font-variant-caps: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 0px;text-transform: none;widows: 2;word-spacing: 0px;-webkit-text-stroke-width: 0px;background-color: rgb(255, 255, 255);text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;">```
<span style="box-sizing: border-box;color: rgb(245, 171, 53);font-weight: bold;line-height: 26px;"><!DOCTYPE <span style="box-sizing: border-box;line-height: 26px;">html><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">lang=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"en"><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">charset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"UTF-8"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">http-equiv=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"X-UA-Compatible" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"IE=edge"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">name=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"viewport" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"width=device-width, initial-scale=1.0"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title>SVG - stroke<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"300" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"300"><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">g <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#ffff00" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#ff0000" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke-width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"5"><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">path <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">d=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"M20 50 l200 0" /><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">path <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke-dasharray=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"5, 10" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">d=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"M20 100 l200 0" /><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">path <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke-dasharray=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"5, 10, 5" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">d=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"M20 150 l200 0" /><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">path <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke-dasharray=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"10, 5, 20" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">d=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"M20 200 l200 0" /><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">g><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html><br style="box-sizing: border-box;"></br><br style="box-sizing: border-box;"></br>复制代码<br style="box-sizing: border-box;"></br>


效果：

![](https://oss-cn-hangzhou.aliyuncs.com/codingsky/cdn/img/2022-09-05/4ce160f1220435d7c836896f29bd0942)
image.png
#### stroke-dashoffset

stroke-dashoffset 属性用于指定路径开始的距离。值可为正值、负值、百分比。

示例：

效果：

image.png

stroke-miterlimit

如果两条线交汇在一起形成一个尖角，而且属性 stroke-linejoin 指定了 miter，斜接有可能扩展到远远超过路径轮廓线的线宽。属性 stroke-miterlimit 对斜接长度和stroke-width的比率强加了一个极限。当极限到达时，交汇处由斜接变成倒角。

示例：

<pre style="box-sizing: border-box;font-size: 16px;font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;margin-top: 10px;margin-bottom: 10px;overflow: auto;border-radius: 5px;box-shadow: rgba(0, 0, 0, 0.55) 0px 2px 10px;color: rgb(0, 0, 0);font-style: normal;font-variant-ligatures: normal;font-variant-caps: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 0px;text-transform: none;widows: 2;word-spacing: 0px;-webkit-text-stroke-width: 0px;background-color: rgb(255, 255, 255);text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;">```
<span style="box-sizing: border-box;color: rgb(245, 171, 53);font-weight: bold;line-height: 26px;"><!DOCTYPE <span style="box-sizing: border-box;line-height: 26px;">html><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">lang=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"en"><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">charset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"UTF-8"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">http-equiv=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"X-UA-Compatible" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"IE=edge"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">name=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"viewport" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"width=device-width, initial-scale=1.0"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title>SVG - stroke<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"200" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"500"><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">g <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"none" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#ff0000" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke-width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"20"><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">path <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">d=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"M40 60 80 20 120 60 120 20 150 70" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke-linejoin=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"miter" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke-miterlimit=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"1" /><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">path <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">d=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"M40 140 80 100 120 140 120 100 150 150" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke-linejoin=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"miter" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke-miterlimit=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"2" /><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">path <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">d=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"M40 220 80 180 120 220 120 180 150 230" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke-linejoin=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"miter" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke-miterlimit=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"3" /><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">path <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">d=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"M40 300 80 260 120 300 120 260 150 310" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke-linejoin=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"miter" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke-miterlimit=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"4" /><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">path <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">d=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"M40 380 80 340 120 380 120 340 150 390" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke-linejoin=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"miter" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke-miterlimit=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"5" /><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">g><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html><br style="box-sizing: border-box;"></br>复制代码<br style="box-sizing: border-box;"></br>


效果为：

![](https://oss-cn-hangzhou.aliyuncs.com/codingsky/cdn/img/2022-09-05/7987600d6e6d5d144437ac4ecd97019d)
image.png
文字
==

SVG中我们不仅可以绘制各种图形，我们还可也以绘制文字。


text
----

通过text标签我们可以在SVG中添加文字，

示例：

效果为：

image.png从上面的实例我们可以看到，text标签有一些自己的属性，下面我们细说一下text标签的属性。

x和y

x和y属性决定了文字的绘制起点。如上面的例子我们就是从坐标（50,50）的位置开始绘制的文字。

但需要注意的是x和y的值可以是一个数列。如果设置为了一个数列则会应用到每一个字符上

示例：

<pre style="box-sizing: border-box;font-size: 16px;font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;margin-top: 10px;margin-bottom: 10px;overflow: auto;border-radius: 5px;box-shadow: rgba(0, 0, 0, 0.55) 0px 2px 10px;color: rgb(0, 0, 0);font-style: normal;font-variant-ligatures: normal;font-variant-caps: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 0px;text-transform: none;widows: 2;word-spacing: 0px;-webkit-text-stroke-width: 0px;background-color: rgb(255, 255, 255);text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;">```
<span style="box-sizing: border-box;color: rgb(245, 171, 53);font-weight: bold;line-height: 26px;"><!DOCTYPE <span style="box-sizing: border-box;line-height: 26px;">html><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">lang=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"en"><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">charset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"UTF-8"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">http-equiv=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"X-UA-Compatible" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"IE=edge"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">name=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"viewport" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"width=device-width, initial-scale=1.0"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title>SVG - 文字<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"300" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"300"><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">text <br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"30 60 90 120 150 180 210 240 270" <br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"60 90 120 150 180 150 120 90 60"<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#f00" <br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#0f0" <br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">font-size=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50"<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">font-weight=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"bold" ><br style="box-sizing: border-box;"></br>      Hello Svg !<br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">text><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html><br style="box-sizing: border-box;"></br>复制代码<br style="box-sizing: border-box;"></br>


效果为：

![](https://oss-cn-hangzhou.aliyuncs.com/codingsky/cdn/img/2022-09-05/27ff5fddea0225ab1efe008b23ab5d43)
image.png
### dx和dy

dx和dy属性与x和y属性不同的是，x和y属性是绝对的坐标，而dx和dy属性是相对于当前位置的偏移量。

参数也可以是一个数列。如果设置为了一个数列则会应用到每一个字符上

示例：

效果为：

image.png

rotate

rotate属性可以把文字旋转一个角度。

示例：

<pre style="box-sizing: border-box;font-size: 16px;font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;margin-top: 10px;margin-bottom: 10px;overflow: auto;border-radius: 5px;box-shadow: rgba(0, 0, 0, 0.55) 0px 2px 10px;color: rgb(0, 0, 0);font-style: normal;font-variant-ligatures: normal;font-variant-caps: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 0px;text-transform: none;widows: 2;word-spacing: 0px;-webkit-text-stroke-width: 0px;background-color: rgb(255, 255, 255);text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;">```
<span style="box-sizing: border-box;color: rgb(245, 171, 53);font-weight: bold;line-height: 26px;"><!DOCTYPE <span style="box-sizing: border-box;line-height: 26px;">html><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">lang=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"en"><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">charset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"UTF-8"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">http-equiv=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"X-UA-Compatible" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"IE=edge"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">name=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"viewport" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"width=device-width, initial-scale=1.0"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title>SVG - 文字<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"500" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"500"><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">text <br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">rotate=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"10"<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#f00" <br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#0f0" <br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">font-size=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50"<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">font-weight=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"bold" ><br style="box-sizing: border-box;"></br>      Hello Svg !<br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">text><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html><br style="box-sizing: border-box;"></br>复制代码<br style="box-sizing: border-box;"></br>


效果为：

![](https://oss-cn-hangzhou.aliyuncs.com/codingsky/cdn/img/2022-09-05/df052b1d8d02dfee05aa06aa6300bb20)
image.png同样的参数也可以是一个数列。如果设置为了一个数列则会应用到每一个字符上

示例：

效果为：

image.png

textLength

textLength属性给定了一个字符串的计算长度。在文字的长度和textLength属性给定的长度不一致的情况下渲染引擎会精细调整字型的位置。

示例：

<pre style="box-sizing: border-box;font-size: 16px;font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;margin-top: 10px;margin-bottom: 10px;overflow: auto;border-radius: 5px;box-shadow: rgba(0, 0, 0, 0.55) 0px 2px 10px;color: rgb(0, 0, 0);font-style: normal;font-variant-ligatures: normal;font-variant-caps: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 0px;text-transform: none;widows: 2;word-spacing: 0px;-webkit-text-stroke-width: 0px;background-color: rgb(255, 255, 255);text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;">```
<span style="box-sizing: border-box;color: rgb(245, 171, 53);font-weight: bold;line-height: 26px;"><!DOCTYPE <span style="box-sizing: border-box;line-height: 26px;">html><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">lang=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"en"><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">charset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"UTF-8"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">http-equiv=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"X-UA-Compatible" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"IE=edge"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">name=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"viewport" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"width=device-width, initial-scale=1.0"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title>SVG - 文字<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"550" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"500"><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">text <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">textLength=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"150" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#f00" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#0f0" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">font-size=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50"<span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">font-weight=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"bold" ><br style="box-sizing: border-box;"></br>      Hello Svg !<br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">text><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">text  <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">textLength=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"500" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#f00" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#0f0" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">font-size=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">font-weight=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"bold" ><br style="box-sizing: border-box;"></br>      Hello Svg !<br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">text><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html><br style="box-sizing: border-box;"></br>复制代码<br style="box-sizing: border-box;"></br>


效果为：

![](https://oss-cn-hangzhou.aliyuncs.com/codingsky/cdn/img/2022-09-05/21a7cf0ac7e2c655b00f7df14a854b85)
image.png
### lengthAdjust

lengthadjust属性可以控制文本以什么方式伸展到由\_textLength\_属性定义的长度。

- spacing：只拉伸或压缩间距（文字不变形）
- spacingAndGlyphs：同时拉伸或压缩间距和文字本身（文字变形）

示例：

效果为：

image.png

fill和stroke

填充和轮廓也都可以应用于文字

示例：

<pre style="box-sizing: border-box;font-size: 16px;font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;margin-top: 10px;margin-bottom: 10px;overflow: auto;border-radius: 5px;box-shadow: rgba(0, 0, 0, 0.55) 0px 2px 10px;color: rgb(0, 0, 0);font-style: normal;font-variant-ligatures: normal;font-variant-caps: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 0px;text-transform: none;widows: 2;word-spacing: 0px;-webkit-text-stroke-width: 0px;background-color: rgb(255, 255, 255);text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;">```
<span style="box-sizing: border-box;color: rgb(245, 171, 53);font-weight: bold;line-height: 26px;"><!DOCTYPE <span style="box-sizing: border-box;line-height: 26px;">html><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">lang=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"en"><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">charset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"UTF-8"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">http-equiv=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"X-UA-Compatible" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"IE=edge"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">name=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"viewport" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"width=device-width, initial-scale=1.0"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title>SVG - 文字<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"300" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"300"><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">text <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#f00" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#0f0" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">font-weight=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"bold">Hello Svg !<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">text><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html><br style="box-sizing: border-box;"></br>复制代码<br style="box-sizing: border-box;"></br>


效果为：

![](https://oss-cn-hangzhou.aliyuncs.com/codingsky/cdn/img/2022-09-05/43dad57c4ac04305d71411ae80dae388)
image.png
### CSS文字属性

一些CSS中的文字样式属性同样也可以应用于SVG的文字中。比如上面例子中我们用到的文字加粗：font-weight 还有很多属性同样也适用，例如：font-size、font-family、font-style、font-variant、font-stretch、font-size-adjust、kerning、letter-spacing、word-spacing、text-decoration等。

示例：

效果：

image.png tspan

tspan标签和text标签一样都可以用来添加文字，但不同的是tspan标签的作用为标记大块文本内的部分内容。比如一段文本其中某个字需要加粗或者颜色不一致，就可以用到tspan标签。

tspan标签的属性和text标签一致，上面说道的text标签的属性在tspan标签中也适用。

需注意的是tspan标签必须是一个text元素的子元素或别的子元素tspan的子元素。

示例：

<pre style="box-sizing: border-box;font-size: 16px;font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;margin-top: 10px;margin-bottom: 10px;overflow: auto;border-radius: 5px;box-shadow: rgba(0, 0, 0, 0.55) 0px 2px 10px;color: rgb(0, 0, 0);font-style: normal;font-variant-ligatures: normal;font-variant-caps: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 0px;text-transform: none;widows: 2;word-spacing: 0px;-webkit-text-stroke-width: 0px;background-color: rgb(255, 255, 255);text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;">```
<span style="box-sizing: border-box;color: rgb(245, 171, 53);font-weight: bold;line-height: 26px;"><!DOCTYPE <span style="box-sizing: border-box;line-height: 26px;">html><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">lang=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"en"><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">charset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"UTF-8"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">http-equiv=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"X-UA-Compatible" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"IE=edge"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">name=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"viewport" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"width=device-width, initial-scale=1.0"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title>SVG - 文字<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"550" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"500"><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">text <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#f00" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#0f0" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">font-size=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" ><br style="box-sizing: border-box;"></br>      Hello <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">tspan <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#f0f" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">font-weight=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"bold"> 小 <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">tspan> Svg !<br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">text><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html><br style="box-sizing: border-box;"></br>复制代码<br style="box-sizing: border-box;"></br>


效果：

![](https://oss-cn-hangzhou.aliyuncs.com/codingsky/cdn/img/2022-09-05/59d92b8ba6645e56def38a82924313d8)
image.png需要注意的是tspan标签的x、y和 dx、dy 会对标签后面的内容造成影响

示例：

效果：

image.png tref

tref标签配合xlink:href属性能引用已经定义的文本，实现复制的效果。并且引用之后还可以单独定义他的样式。

但遗憾的是 tref标签是SVG 1.1规范的内容，它已经从SVG 2.0规范中删除了。

因此此处咱们可以使用 use标签来代替它，这里说明一下：

defs标签可以定义一些之后绘制中需要重复使用的图形元素，defs是definitions的缩写。
use标签可以在SVG文档内读取目标节点，并在别的地方复制使用。

示例：

<pre style="box-sizing: border-box;font-size: 16px;font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;margin-top: 10px;margin-bottom: 10px;overflow: auto;border-radius: 5px;box-shadow: rgba(0, 0, 0, 0.55) 0px 2px 10px;color: rgb(0, 0, 0);font-style: normal;font-variant-ligatures: normal;font-variant-caps: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 0px;text-transform: none;widows: 2;word-spacing: 0px;-webkit-text-stroke-width: 0px;background-color: rgb(255, 255, 255);text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;">```
<span style="box-sizing: border-box;color: rgb(245, 171, 53);font-weight: bold;line-height: 26px;"><!DOCTYPE <span style="box-sizing: border-box;line-height: 26px;">html><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">lang=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"en"><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">charset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"UTF-8"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">http-equiv=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"X-UA-Compatible" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"IE=edge"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">name=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"viewport" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"width=device-width, initial-scale=1.0"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title>SVG - 文字<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"500" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"500"><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">defs>  <br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">text <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">id=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"text" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#000" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">font-size=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"30" >今天天气不错！<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">text><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">defs><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(212, 208, 171);font-style: italic;line-height: 26px;"><!-- tref 已废弃 --><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(212, 208, 171);font-style: italic;line-height: 26px;"><!-- <tref x="50" y="100" fill="#f00" xlink:href="#text" /> --><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">use <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#f00" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">xlink:href=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#text" /><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">use <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"150" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#0f0" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">rotate=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"45" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">xlink:href=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#text" /><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html><br style="box-sizing: border-box;"></br>复制代码<br style="box-sizing: border-box;"></br>


效果：

![](https://oss-cn-hangzhou.aliyuncs.com/codingsky/cdn/img/2022-09-05/3484b8be8d74879c94e45840e9048f58)
image.png
textPath
--------

textPath标签可以利用它的xlink:href属性取得一个任意路径，并且可以让字符顺着路径渲染。

示例：

效果：

image.png 渐变

了解渐变的小伙伴都知道，渐变就是从一个颜色过渡到另一个颜色，且渐变都分为两种渐变：线性渐变和径向渐变在SVG中渐变依旧如此。但需要注意的是这里我们需要接触两个新的标签：

defs标签用来定义渐变
stop标签用来定义渐变的颜色坡度，具有三个属性：offset定义渐变开始和结束的位置、stop-color（定义颜色）和stop-opacity（定义透明度）

线性渐变

线性渐变（linearGradient）就是沿直线改变颜色。

语法：

<pre style="box-sizing: border-box;font-size: 16px;font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;margin-top: 10px;margin-bottom: 10px;overflow: auto;border-radius: 5px;box-shadow: rgba(0, 0, 0, 0.55) 0px 2px 10px;color: rgb(0, 0, 0);font-style: normal;font-variant-ligatures: normal;font-variant-caps: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 0px;text-transform: none;widows: 2;word-spacing: 0px;-webkit-text-stroke-width: 0px;background-color: rgb(255, 255, 255);text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;">```
<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">linearGradient <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x1=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y1=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x2=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y2=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">""><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">stop <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">offset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0%"/><br style="box-sizing: border-box;"></br>  ...<br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">stop <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">offset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"20%"/><br style="box-sizing: border-box;"></br>  ...<br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">stop <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">offset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100%"/><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">linearGradient><br style="box-sizing: border-box;"></br>复制代码<br style="box-sizing: border-box;"></br>


参数：x1、y1定义线性渐变的起点， x2、y2定义渐变的终点。

示例：

效果：

image.png改变x1、y1和x2、y2的值可以定义不同方向上的渐变

示例：

<pre style="box-sizing: border-box;font-size: 16px;font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;margin-top: 10px;margin-bottom: 10px;overflow: auto;border-radius: 5px;box-shadow: rgba(0, 0, 0, 0.55) 0px 2px 10px;color: rgb(0, 0, 0);font-style: normal;font-variant-ligatures: normal;font-variant-caps: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 0px;text-transform: none;widows: 2;word-spacing: 0px;-webkit-text-stroke-width: 0px;background-color: rgb(255, 255, 255);text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;">```
<span style="box-sizing: border-box;color: rgb(245, 171, 53);font-weight: bold;line-height: 26px;"><!DOCTYPE <span style="box-sizing: border-box;line-height: 26px;">html><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">lang=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"en"><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">charset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"UTF-8"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">http-equiv=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"X-UA-Compatible" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"IE=edge"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">name=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"viewport" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"width=device-width, initial-scale=1.0"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title>SVG - 渐变<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"500" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"400"><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">defs><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">linearGradient <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">id=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"linearGradient" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x1=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y1=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x2=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y2=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0"><br style="box-sizing: border-box;"></br>        <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">stop <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">offset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stop-color=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"rgb(255,255,0)"  /><br style="box-sizing: border-box;"></br>        <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">stop <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">offset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stop-color=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"rgb(255,0,0)" /><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">linearGradient><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">linearGradient <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">id=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"linearGradient1" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x1=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y1=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x2=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y2=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100%"><br style="box-sizing: border-box;"></br>        <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">stop <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">offset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stop-color=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"rgb(255,255,0)"  /><br style="box-sizing: border-box;"></br>        <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">stop <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">offset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stop-color=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"rgb(255,0,0)" /><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">linearGradient><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">linearGradient <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">id=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"linearGradient2" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x1=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y1=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x2=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y2=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100%"><br style="box-sizing: border-box;"></br>        <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">stop <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">offset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stop-color=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"rgb(255,255,0)"  /><br style="box-sizing: border-box;"></br>        <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">stop <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">offset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stop-color=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"rgb(255,0,0)" /><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">linearGradient><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">defs><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">ellipse <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cx=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cy=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"70" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">rx=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">ry=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"url(#linearGradient)" /><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">ellipse <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cx=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cy=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"200" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">rx=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">ry=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"url(#linearGradient1)" /><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">ellipse <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cx=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cy=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"350" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">rx=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">ry=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"url(#linearGradient2)" /><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html><br style="box-sizing: border-box;"></br>复制代码<br style="box-sizing: border-box;"></br>


效果：

![](https://oss-cn-hangzhou.aliyuncs.com/codingsky/cdn/img/2022-09-05/604a3551c91679938cec2a22b52f7ace)
image.png
径向渐变
----

径向渐变（radialGradient）其实就是以一个点做放射性的渐变。

语法：

参数：cx、cy、r分别为圆的坐标和半径，也就是渐变的范围，fx、fy定义渐变的中心点，也叫渐变的焦点。

示例：

<pre style="box-sizing: border-box;font-size: 16px;font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;margin-top: 10px;margin-bottom: 10px;overflow: auto;border-radius: 5px;box-shadow: rgba(0, 0, 0, 0.55) 0px 2px 10px;color: rgb(0, 0, 0);font-style: normal;font-variant-ligatures: normal;font-variant-caps: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 0px;text-transform: none;widows: 2;word-spacing: 0px;-webkit-text-stroke-width: 0px;background-color: rgb(255, 255, 255);text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;">```
<span style="box-sizing: border-box;color: rgb(245, 171, 53);font-weight: bold;line-height: 26px;"><!DOCTYPE <span style="box-sizing: border-box;line-height: 26px;">html><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">lang=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"en"><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">charset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"UTF-8"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">http-equiv=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"X-UA-Compatible" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"IE=edge"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">name=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"viewport" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"width=device-width, initial-scale=1.0"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title>SVG - 渐变<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"500" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"400"><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">defs><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">radialGradient <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">id=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"radialGradient" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cx=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cy=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">r=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fx=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fy=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50%"><br style="box-sizing: border-box;"></br>        <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">stop <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">offset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stop-color=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"rgb(255, 255, 0)" /><br style="box-sizing: border-box;"></br>        <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">stop <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">offset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stop-color=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"rgb(255, 0, 0)" /><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">radialGradient><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">radialGradient <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">id=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"radialGradient1" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cx=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cy=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">r=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fx=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fy=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0%"><br style="box-sizing: border-box;"></br>        <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">stop <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">offset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stop-color=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"rgb(255, 255, 0)" /><br style="box-sizing: border-box;"></br>        <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">stop <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">offset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stop-color=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"rgb(255, 0, 0)" /><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">radialGradient><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">radialGradient <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">id=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"radialGradient2" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cx=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cy=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">r=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fx=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fy=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50%"><br style="box-sizing: border-box;"></br>        <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">stop <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">offset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stop-color=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"rgb(255, 255, 0)" /><br style="box-sizing: border-box;"></br>        <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">stop <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">offset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stop-color=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"rgb(255, 0, 0)" /><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">radialGradient><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">defs><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">ellipse <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cx=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cy=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">rx=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">ry=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"url(#radialGradient)" /><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">ellipse <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cx=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cy=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"210" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">rx=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">ry=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"url(#radialGradient1)" /><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">ellipse <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cx=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cy=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"320" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">rx=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">ry=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"url(#radialGradient2)" /><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html><br style="box-sizing: border-box;"></br>复制代码<br style="box-sizing: border-box;"></br>


效果：

![](https://oss-cn-hangzhou.aliyuncs.com/codingsky/cdn/img/2022-09-05/094ae4838fd6f4c26f2b11978f801811)
image.png不管是线性渐变还是径向渐变，他们不仅可以用于图形还是用于文字

示例：

效果：

image.png同样的渐变不仅可以用来填充（fill），还能用来绘制轮廓（stroke）

示例：

<pre style="box-sizing: border-box;font-size: 16px;font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;margin-top: 10px;margin-bottom: 10px;overflow: auto;border-radius: 5px;box-shadow: rgba(0, 0, 0, 0.55) 0px 2px 10px;color: rgb(0, 0, 0);font-style: normal;font-variant-ligatures: normal;font-variant-caps: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 0px;text-transform: none;widows: 2;word-spacing: 0px;-webkit-text-stroke-width: 0px;background-color: rgb(255, 255, 255);text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;">```
<span style="box-sizing: border-box;color: rgb(245, 171, 53);font-weight: bold;line-height: 26px;"><!DOCTYPE <span style="box-sizing: border-box;line-height: 26px;">html><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">lang=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"en"><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">charset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"UTF-8"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">http-equiv=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"X-UA-Compatible" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"IE=edge"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">name=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"viewport" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"width=device-width, initial-scale=1.0"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title>SVG - 渐变<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"500" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"400"><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">defs><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">linearGradient <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">id=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"linearGradient" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x1=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y1=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x2=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y2=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0"><br style="box-sizing: border-box;"></br>        <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">stop <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">offset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stop-color=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"rgb(255,255,0)"  /><br style="box-sizing: border-box;"></br>        <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">stop <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">offset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stop-color=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"rgb(255,0,0)" /><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">linearGradient><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">radialGradient <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">id=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"radialGradient" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cx=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cy=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">r=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fx=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fy=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100%"><br style="box-sizing: border-box;"></br>        <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">stop <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">offset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stop-color=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"rgb(255, 255, 0)" /><br style="box-sizing: border-box;"></br>        <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">stop <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">offset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stop-color=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"rgb(255, 0, 0)" /><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">radialGradient><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">defs><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">text <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke-width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"5" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"url(#linearGradient)" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"none" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">font-size=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">font-family=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"Verdana" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100">SVG<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">text><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">text <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke-width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"5" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"url(#radialGradient)" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"none" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">font-size=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">font-family=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"Verdana" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"200">SVG<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">text><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html><br style="box-sizing: border-box;"></br>复制代码<br style="box-sizing: border-box;"></br>


效果：

![](https://oss-cn-hangzhou.aliyuncs.com/codingsky/cdn/img/2022-09-05/62227eaeb71c9315be5485a55c6f74f7)
image.png
裁剪和蒙层
=====

裁剪和蒙层是我们在之后的SVG应用中常用的功能之一。总而言之是一些特定场景必不可少的功能。


裁剪
--

裁剪的功能主要是使用`clipPath`标签定义一条裁剪路径，然后用来裁剪掉元素的部分内容。且任何透明度的效果都是无效的，它只能要么裁剪掉要么不裁剪。

示例：

效果：

image.png 蒙层

蒙层的功能主要实现标签就是mask标签，他的功能和名字正好相反，他不是用来遮住元素的部分内容，而是用来显示元素中mask标签遮住的内容。他和clipPath标签不同的是他允许使用透明度（透明度为0则无蒙层效果）和灰度值遮罩计算得的软边缘

示例：

<pre style="box-sizing: border-box;font-size: 16px;font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;margin-top: 10px;margin-bottom: 10px;overflow: auto;border-radius: 5px;box-shadow: rgba(0, 0, 0, 0.55) 0px 2px 10px;color: rgb(0, 0, 0);font-style: normal;font-variant-ligatures: normal;font-variant-caps: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 0px;text-transform: none;widows: 2;word-spacing: 0px;-webkit-text-stroke-width: 0px;background-color: rgb(255, 255, 255);text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;">```
<span style="box-sizing: border-box;color: rgb(245, 171, 53);font-weight: bold;line-height: 26px;"><!DOCTYPE <span style="box-sizing: border-box;line-height: 26px;">html><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">lang=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"en"><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">charset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"UTF-8"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">http-equiv=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"X-UA-Compatible" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"IE=edge"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">name=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"viewport" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"width=device-width, initial-scale=1.0"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title>SVG - 裁剪<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"300" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"300"><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">defs><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">mask <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">id=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"Mask"><br style="box-sizing: border-box;"></br>        <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">path <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">d=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"M10 50 A50 50 0 0 1 100 50 A50 50 0 0 1 190 50 Q210 100 100 200  Q-5 100 10 50 Z" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#fff" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill-opacity=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0.5" /><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">mask><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">defs><br style="box-sizing: border-box;"></br>  <br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">rect <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"200" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"200" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#f00" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">mask=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"url(#Mask)" /><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html><br style="box-sizing: border-box;"></br>复制代码<br style="box-sizing: border-box;"></br>


效果：

![](https://oss-cn-hangzhou.aliyuncs.com/codingsky/cdn/img/2022-09-05/3d29ddfba3cf529f6824bd80947fead5)
image.png
动画
==

盼星星盼月亮终于盼到了我们最期待的SVG动画的章节了。因为文章分为两部分发布的，上周末只发布了一些基础的东西，所以就有小伙伴在评论里催动画方面的知识点，这周末咱们就一起来看看。


基础动画
----

在做动画之前呢咱们需要先了解一下动画的基础知识。咱们再学习CSS的时候其实都有学过，大概就是平移、缩放、旋转等一些transform属性的一些方法。下面我们依次说一下，就算是做动画之前的一个小复习吧。


### translate（平移）

translate()方法主要的功能就是用来平移的，把元素从一个地点平移到另一个地点。

语法：`transform="translate(x, y)"`

参数：x为X轴上的平移距离，y为Y轴上的平移距离，

示例：

效果：

image.png

scale（缩放）

scale()方法可以用来缩放元素，通过缩放来控制元素的大小。

语法：transform="scale(x, y)"

参数：x为X轴上的缩放大小，y为Y轴上的缩放大小，当两个值一样时，写一个值就可以。

示例：

<pre style="box-sizing: border-box;font-size: 16px;font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;margin-top: 10px;margin-bottom: 10px;overflow: auto;border-radius: 5px;box-shadow: rgba(0, 0, 0, 0.55) 0px 2px 10px;color: rgb(0, 0, 0);font-style: normal;font-variant-ligatures: normal;font-variant-caps: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 0px;text-transform: none;widows: 2;word-spacing: 0px;-webkit-text-stroke-width: 0px;background-color: rgb(255, 255, 255);text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;">```
<span style="box-sizing: border-box;color: rgb(245, 171, 53);font-weight: bold;line-height: 26px;"><!DOCTYPE <span style="box-sizing: border-box;line-height: 26px;">html><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">lang=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"en"><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">charset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"UTF-8"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">http-equiv=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"X-UA-Compatible" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"IE=edge"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">name=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"viewport" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"width=device-width, initial-scale=1.0"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title>SVG - 动画<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"500" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"500"><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">rect <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#ff770f"/><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">rect <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"200"  <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#7e9178" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">transform=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"scale(0.5)"/><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">rect <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100"  <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#183c78"  <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">transform=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"scale(1.5)"/><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">rect <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"200" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100"  <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#cccccc"  <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">transform=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"scale(1, 0.5)"/><br style="box-sizing: border-box;"></br><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html><br style="box-sizing: border-box;"></br>复制代码<br style="box-sizing: border-box;"></br>


效果：

![](https://oss-cn-hangzhou.aliyuncs.com/codingsky/cdn/img/2022-09-05/cc7d1aa65329a1c08fb87dd62e245a97)
image.png
### rotate（旋转）

rotate()方法可以用来做元素的旋转功能，把元素从一个地点平移到另一个地点。

语法：`transform="rotate(deg)"`

参数：deg为旋转的角度，45度就写45度。

示例：

效果：

image.png是不是觉得效果和我们想想中的不一样？我就只想旋转，为什么感觉还发生了位移呢？

其实这是因为元素的旋转中心点是（0, 0）。如果我们想要只是选中而不位移，那么就需要把旋转的中心点设置在元素的中心点。

以上面的例子为例，元素的x坐标为200，本身宽度为100，则x轴元素的中心点就为250，y轴元素的坐标为0，高度为100，则y轴元素的中心点为50。因此元素的中心点就为（250, 50）。

transform-origin

上面我们已经得到了元素的中心点，那么如何设置元素的中心点呢？

我们需要通过transform-origin属性来设置元素的中心点。直接看例子：

<pre style="box-sizing: border-box;font-size: 16px;font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;margin-top: 10px;margin-bottom: 10px;overflow: auto;border-radius: 5px;box-shadow: rgba(0, 0, 0, 0.55) 0px 2px 10px;color: rgb(0, 0, 0);font-style: normal;font-variant-ligatures: normal;font-variant-caps: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 0px;text-transform: none;widows: 2;word-spacing: 0px;-webkit-text-stroke-width: 0px;background-color: rgb(255, 255, 255);text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;">```
<span style="box-sizing: border-box;color: rgb(245, 171, 53);font-weight: bold;line-height: 26px;"><!DOCTYPE <span style="box-sizing: border-box;line-height: 26px;">html><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">lang=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"en"><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">charset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"UTF-8"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">http-equiv=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"X-UA-Compatible" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"IE=edge"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">name=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"viewport" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"width=device-width, initial-scale=1.0"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title>SVG - 动画<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"500" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"500"><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">rect <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"200" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#ff770f"/><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">rect <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"200" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#cccccc" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">transform-origin=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"250 50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">transform=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"rotate(20)"/><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">rect <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"200" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#7e9178" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">transform-origin=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"250 50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">transform=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"rotate(40)"/><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">rect <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"200" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#183c78" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">transform-origin=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"250 50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">transform=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"rotate(60)"/><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html><br style="box-sizing: border-box;"></br>复制代码<br style="box-sizing: border-box;"></br>


效果：

![](https://oss-cn-hangzhou.aliyuncs.com/codingsky/cdn/img/2022-09-05/df19d60fe84eb9ffe2b8a365d27e2977)
image.png
### skew（倾斜）

skew()方法可用来实现元素的倾斜，可根据参数去分别做X轴和Y轴的倾斜度。

语法：`transform="skewX(x) skewY(y)"`

参数：x为X轴上的倾斜度，y为Y轴上的倾斜度。

在SVG中skew属性需要分开设置，x轴设置为skewX，y轴设置为skewY，不能合并起来用，写成 skew(x, y) 是不生效的。

示例：

效果：

image.png JS动画

在文章最开始的时候我们就说过：SVG不能动态的修改动画内容。

所以CSS3的过渡属性就不好使了，那么想实现动画就只能使用js的定时器（setInterval）来实现。

举个例子：

<pre style="box-sizing: border-box;font-size: 16px;font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;margin-top: 10px;margin-bottom: 10px;overflow: auto;border-radius: 5px;box-shadow: rgba(0, 0, 0, 0.55) 0px 2px 10px;color: rgb(0, 0, 0);font-style: normal;font-variant-ligatures: normal;font-variant-caps: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 0px;text-transform: none;widows: 2;word-spacing: 0px;-webkit-text-stroke-width: 0px;background-color: rgb(255, 255, 255);text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;">```
<span style="box-sizing: border-box;color: rgb(245, 171, 53);font-weight: bold;line-height: 26px;"><!DOCTYPE <span style="box-sizing: border-box;line-height: 26px;">html><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">lang=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"en"><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">charset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"UTF-8"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">http-equiv=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"X-UA-Compatible" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"IE=edge"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">name=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"viewport" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"width=device-width, initial-scale=1.0"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title>SVG - 动画<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"500" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"500"><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">rect <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">id=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"svg" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#ff770f"/><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg><br style="box-sizing: border-box;"></br><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">script><span style="box-sizing: border-box;line-height: 26px;"><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(220, 198, 224);font-weight: bold;line-height: 26px;">const svgEl = <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">document.getElementById(<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">'svg')<br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(220, 198, 224);font-weight: bold;line-height: 26px;">let x=<span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">0, y=<span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">0, add=<span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">true<br style="box-sizing: border-box;"></br>    setInterval(<span style="box-sizing: border-box;line-height: 26px;"><span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">()=>{<br style="box-sizing: border-box;"></br>      x+=<span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">1<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(220, 198, 224);font-weight: bold;line-height: 26px;">if(y<<span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">150 && add){<br style="box-sizing: border-box;"></br>        y+=<span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">1<br style="box-sizing: border-box;"></br>      } <span style="box-sizing: border-box;color: rgb(220, 198, 224);font-weight: bold;line-height: 26px;">else {<br style="box-sizing: border-box;"></br>        add=<span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">false<br style="box-sizing: border-box;"></br>        y-=<span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">1<br style="box-sizing: border-box;"></br>      }<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">console.log(<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">`x: <span style="box-sizing: border-box;color: rgb(51, 51, 51);font-weight: normal;line-height: 26px;">${x}, y: <span style="box-sizing: border-box;color: rgb(51, 51, 51);font-weight: normal;line-height: 26px;">${y}`)<br style="box-sizing: border-box;"></br>      svgEl.setAttribute(<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">'transform', <span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">`translate(<span style="box-sizing: border-box;color: rgb(51, 51, 51);font-weight: normal;line-height: 26px;">${x}, <span style="box-sizing: border-box;color: rgb(51, 51, 51);font-weight: normal;line-height: 26px;">${y})`)<br style="box-sizing: border-box;"></br>    }, <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">10)<br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">script><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html><br style="box-sizing: border-box;"></br><br style="box-sizing: border-box;"></br>复制代码<br style="box-sizing: border-box;"></br>


效果：

![](https://oss-cn-hangzhou.aliyuncs.com/codingsky/cdn/img/2022-09-05/3ea0a612f52394a639edc67e43b30e97)

未标题-1.gif那么SVG最拿得出手的线条动画又如何用js来实现呢？比如我们需要变换图形：

示例：

<pre style="box-sizing: border-box;font-size: 16px;font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;margin-top: 10px;margin-bottom: 10px;overflow: auto;border-radius: 5px;box-shadow: rgba(0, 0, 0, 0.55) 0px 2px 10px;color: rgb(0, 0, 0);font-style: normal;font-variant-ligatures: normal;font-variant-caps: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 0px;text-transform: none;widows: 2;word-spacing: 0px;-webkit-text-stroke-width: 0px;background-color: rgb(255, 255, 255);text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;">`` <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>SVG - 动画</title> </head> <body> <svg width="500" height="500" fill="orange"> <path id="svgPath" /> </svg> <script> const svgPath = document.getElementById('svgPath') let x=250, x1=250, y=100 setInterval(()=>{ if(x<350) { x+=0.1 } else { x1=300 if(y<200)y+=0.1 } svgPath.setAttribute('d', M 250 100 300 0 ${x} 100 ${x1} ${y} z`)

 }, 0)

 </script>

</body>

</html>

复制代码

效果：

未标题-2.gif是不是越来越有SVG的样了？

但不幸的是，用js操作真的是很费劲。加入我们这个不是直线变三角再变菱形，而是正方形变十边形再变圆形最后变五角星。你想想这个计算是不是很头大？那有没有什么简单的方法呢？

这个问题我们先留着，接下来我们看看CSS3配合SVG做动画会怎么。

CSS动画

下面我们就结合CSS来尝试做一下svg的线条动画。这里我们需要用上三个属性：分别是 stroke、stroke-dasharray、stroke-dashoffset。

首先咱们先看一下如何把线条动起来。

示例：

<pre style="box-sizing: border-box;font-size: 16px;font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;margin-top: 10px;margin-bottom: 10px;overflow: auto;border-radius: 5px;box-shadow: rgba(0, 0, 0, 0.55) 0px 2px 10px;color: rgb(0, 0, 0);font-style: normal;font-variant-ligatures: normal;font-variant-caps: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 0px;text-transform: none;widows: 2;word-spacing: 0px;-webkit-text-stroke-width: 0px;background-color: rgb(255, 255, 255);text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;">```
<span style="box-sizing: border-box;color: rgb(245, 171, 53);font-weight: bold;line-height: 26px;"><!DOCTYPE <span style="box-sizing: border-box;line-height: 26px;">html><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">lang=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"en"><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">charset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"UTF-8"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">http-equiv=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"X-UA-Compatible" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"IE=edge"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">name=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"viewport" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"width=device-width, initial-scale=1.0"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title>SVG - 动画<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">style><span style="box-sizing: border-box;line-height: 26px;"><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(220, 198, 224);font-weight: bold;line-height: 26px;">svg {<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">display: block;<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">margin: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">50px auto;<br style="box-sizing: border-box;"></br>    }<br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: bold;line-height: 26px;">#line {<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">stroke-dasharray: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">500;<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">stroke-dashoffset: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">500;<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">animation: animation <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">2s linear infinite;<br style="box-sizing: border-box;"></br>    }<br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(220, 198, 224);font-weight: bold;line-height: 26px;">@keyframes animation {<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(220, 198, 224);font-weight: bold;line-height: 26px;">to {<br style="box-sizing: border-box;"></br>        <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">stroke-dashoffset: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">0;<br style="box-sizing: border-box;"></br>      }<br style="box-sizing: border-box;"></br>    }<br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">style><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"500" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"500" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">xmlns=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"http://www.w3.org/2000/svg" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">version=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"1.1"><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">line <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">id=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"line" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x1=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x2=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"500" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y1=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y2=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"orange" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke-width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"10" /><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html><br style="box-sizing: border-box;"></br>复制代码<br style="box-sizing: border-box;"></br>


效果：

![](https://oss-cn-hangzhou.aliyuncs.com/codingsky/cdn/img/2022-09-05/4dea67cabb1d0a658c97108cd9dae5b9)
未标题-4.gif那么咱们就按照这个逻辑搞一个按钮的线条动画吧。

示例：

效果：

bai.gif我们可以把填充和轮廓弄一些填充，效果就更好看了

示例：

<pre style="box-sizing: border-box;font-size: 16px;font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;margin-top: 10px;margin-bottom: 10px;overflow: auto;border-radius: 5px;box-shadow: rgba(0, 0, 0, 0.55) 0px 2px 10px;color: rgb(0, 0, 0);font-style: normal;font-variant-ligatures: normal;font-variant-caps: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 0px;text-transform: none;widows: 2;word-spacing: 0px;-webkit-text-stroke-width: 0px;background-color: rgb(255, 255, 255);text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;">```
<span style="box-sizing: border-box;color: rgb(245, 171, 53);font-weight: bold;line-height: 26px;"><!DOCTYPE <span style="box-sizing: border-box;line-height: 26px;">html><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">lang=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"en"><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">charset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"UTF-8"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">http-equiv=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"X-UA-Compatible" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"IE=edge"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">name=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"viewport" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"width=device-width, initial-scale=1.0"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title>SVG - 动画<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">style><span style="box-sizing: border-box;line-height: 26px;"><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(220, 198, 224);font-weight: bold;line-height: 26px;">body {<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">background: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">#000000;<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">margin-top: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">100px;<br style="box-sizing: border-box;"></br>    }<br style="box-sizing: border-box;"></br><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);line-height: 26px;">.svg-wrapper {<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">height: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">60px;<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">margin: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">0 auto;<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">position: relative;<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">top: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">50%;<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">transform: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">translateY(-<span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">50%);<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">width: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">320px;<br style="box-sizing: border-box;"></br>    }<br style="box-sizing: border-box;"></br><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);line-height: 26px;">.rect {<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">fill: transparent;<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">stroke-dasharray: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">200 <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">540;<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">stroke-dashoffset: -<span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">445;<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">stroke-width: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">8px;<br style="box-sizing: border-box;"></br>    }<br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(220, 198, 224);font-weight: bold;line-height: 26px;">@keyframes draw {<br style="box-sizing: border-box;"></br>      0% {<br style="box-sizing: border-box;"></br>        <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">stroke-dasharray: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">200 <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">540;<br style="box-sizing: border-box;"></br>        <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">stroke-dashoffset: -<span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">445;<br style="box-sizing: border-box;"></br>        <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">stroke-width: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">8px;<br style="box-sizing: border-box;"></br>      }<br style="box-sizing: border-box;"></br>      100% {<br style="box-sizing: border-box;"></br>        <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">stroke-dasharray: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">760;<br style="box-sizing: border-box;"></br>        <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">stroke-dashoffset: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">0;<br style="box-sizing: border-box;"></br>        <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">stroke-width: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">2px;<br style="box-sizing: border-box;"></br>      }<br style="box-sizing: border-box;"></br>    }<br style="box-sizing: border-box;"></br><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);line-height: 26px;">.svg-wrapper<span style="box-sizing: border-box;line-height: 26px;">:hover <span style="box-sizing: border-box;color: rgb(255, 160, 122);line-height: 26px;">.rect {<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">-webkit-animation: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">0.5s draw linear forwards;<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">animation: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">0.5s draw linear forwards;<br style="box-sizing: border-box;"></br>    }<br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">style><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">div <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">class=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"svg-wrapper"><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"60" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"320" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">xmlns=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"http://www.w3.org/2000/svg"><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">defs><br style="box-sizing: border-box;"></br>        <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">linearGradient <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">id=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"linearGradient" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x1=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y1=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">x2=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">y2=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0"><br style="box-sizing: border-box;"></br>          <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">stop <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">offset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0%" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stop-color=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"rgb(255,255,0)"  /><br style="box-sizing: border-box;"></br>          <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 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rgb(171, 227, 56);line-height: 26px;">"320" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"url(#linearGradient)" /><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">div><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html><br style="box-sizing: border-box;"></br>复制代码<br style="box-sizing: border-box;"></br>


效果：

![](https://oss-cn-hangzhou.aliyuncs.com/codingsky/cdn/img/2022-09-05/8ce90e44c768a207b6a396c2d21dc502)
cai.gif到此我们就看完了SVG分别用js和css来实现动画的方法。那是不是觉得都比较繁琐呢？首先想绘制一个复杂的SVG就很复杂，其次用js去变化坐标也很复杂，用css去做动画简单点，但实现的动画也相对简单。

那么有没有什么“捷径”可以走呢？那回答肯定是：必须有啊！


GreenSock
---------

GreenSock\[4\] 动画平台 (GSAP) 是一个业界知名的工具套件，用于 超过 1100 万个网站，其中包括超过 50% 的 获奖网站 ！您可以使用 GSAP 在任何框架中为 JavaScript 可以触及的几乎所有内容制作动画。无论您是想要为 UI、SVG、Three.js 还是 React 组件制作动画，GSAP 都能满足您的需求。核心库 包含创建超快速、跨浏览器友好动画所需的一切。这就是我们将在本文中逐步介绍的内容。

除了核心，还有各种插件。您无需学习它们即可开始，但它们可以帮助解决特定的动画挑战，例如 基于滚动的动画、 可拖动 交互、变形等。

![](https://oss-cn-hangzhou.aliyuncs.com/codingsky/cdn/img/2022-09-05/76a30f8c868da42548cd577121d8bec2)
image.png本文以SVG为主，所以不做太多GSAP的概述，我们直接说一下如何把GSAP应用到SVG动画中把。


### 引入

补间类型

下面介绍一下GSAP的使用和常用方法。

先举个例子看一下。

示例：

<pre style="box-sizing: border-box;font-size: 16px;font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;margin-top: 10px;margin-bottom: 10px;overflow: auto;border-radius: 5px;box-shadow: rgba(0, 0, 0, 0.55) 0px 2px 10px;color: rgb(0, 0, 0);font-style: normal;font-variant-ligatures: normal;font-variant-caps: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 0px;text-transform: none;widows: 2;word-spacing: 0px;-webkit-text-stroke-width: 0px;background-color: rgb(255, 255, 255);text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;">```
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122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">name=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"viewport" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"width=device-width, initial-scale=1.0"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title>SVG - 动画<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">script <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">src=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"https://cdn.jsdelivr.net/npm/gsap"><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">script><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">div <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">id=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"svg-wrapper"><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"500" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"500" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">xmlns=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"http://www.w3.org/2000/svg"><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">rect <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">id=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"rect" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"orange"><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">rect><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">div><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">script><span style="box-sizing: border-box;line-height: 26px;"><br style="box-sizing: border-box;"></br>    gsap.to(<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">'#rect', {<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;line-height: 26px;">x: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">300, <span style="box-sizing: border-box;color: rgb(212, 208, 171);font-style: italic;line-height: 26px;">// transform: translateX(300px)<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;line-height: 26px;">duration: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">2 <span style="box-sizing: border-box;color: rgb(212, 208, 171);font-style: italic;line-height: 26px;">// 动画执行时间2S<br style="box-sizing: border-box;"></br>    })<br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">script><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html><br style="box-sizing: border-box;"></br>复制代码<br style="box-sizing: border-box;"></br>


效果：

![](https://oss-cn-hangzhou.aliyuncs.com/codingsky/cdn/img/2022-09-05/43f99457978fd96c15cfc7d814719cf7)
g1.gif如上面的例子可以看出，我们只需要一个 `.to()` 方法就可以实现我们想要的动画。而像 `.to()`方法这样的补间类型还有三个：

补间有四种类型：

- gsap.to()：这是最常见的补间类型。.to()补间将从元素的当前状态开始 “到” 补间中定义的值。
- gsap.from()：和 .to() 正好相反，.from()补间中定义的值 为动画开始的状态。
- gsap.fromTo()：定义了起始值和结束值。
- gsap.set()：立即设置属性（无动画）。

接下来我们将应用这几个补间类型实现一些酷炫点的动画。

案例1：下拉松开以后的回弹动效

效果：

未标题-5.gif案例2：小球物理落地动画

<pre style="box-sizing: border-box;font-size: 16px;font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;margin-top: 10px;margin-bottom: 10px;overflow: auto;border-radius: 5px;box-shadow: rgba(0, 0, 0, 0.55) 0px 2px 10px;color: rgb(0, 0, 0);font-style: normal;font-variant-ligatures: normal;font-variant-caps: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 0px;text-transform: none;widows: 2;word-spacing: 0px;-webkit-text-stroke-width: 0px;background-color: rgb(255, 255, 255);text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;">```
<span style="box-sizing: border-box;color: rgb(245, 171, 53);font-weight: bold;line-height: 26px;"><!DOCTYPE <span style="box-sizing: border-box;line-height: 26px;">html><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">lang=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"en"><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">charset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"UTF-8"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">http-equiv=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"X-UA-Compatible" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"IE=edge"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">name=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"viewport" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"width=device-width, initial-scale=1.0"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title>SVG - 动画<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">script <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">src=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"https://cdn.jsdelivr.net/npm/gsap"><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">script><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">div <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">id=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"svg-wrapper"><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"500" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"500" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">xmlns=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"http://www.w3.org/2000/svg"><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">circle <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">id=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"circle" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cx=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">cy=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">r=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"50" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"orange" /><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">div><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">script><span style="box-sizing: border-box;line-height: 26px;"><br style="box-sizing: border-box;"></br>    gsap.to(<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">'#circle', {<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;line-height: 26px;">y: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">400, <span style="box-sizing: border-box;color: rgb(212, 208, 171);font-style: italic;line-height: 26px;">// transform: translateY(400px)<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;line-height: 26px;">duration: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">2, <span style="box-sizing: border-box;color: rgb(212, 208, 171);font-style: italic;line-height: 26px;">// 动画执行时间2S<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;line-height: 26px;">ease: <span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"bounce.out", <span style="box-sizing: border-box;color: rgb(212, 208, 171);font-style: italic;line-height: 26px;">// 动画轨迹<br style="box-sizing: border-box;"></br>    })<br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">script><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html><br style="box-sizing: border-box;"></br>复制代码<br style="box-sizing: border-box;"></br>


效果：

![](https://oss-cn-hangzhou.aliyuncs.com/codingsky/cdn/img/2022-09-05/7d6e393c4dacc6d2ad7c32732d8d87e8)
未标题-7.gif
工具和插件
=====

以前咱们是看不懂SVG里面的哪些标签和path路径，那么现在能看懂是不是又觉得写不出一个好看的SVG呢？

其实这是正常的，都啥时代了，能用工具的绝不自己动手，下面咱们就说一下，如何应用工具和插件，写一个酷炫的SVG动画。


工具
--

能生成SVG路径的工具还是比较多的啊，比如你想要现成的SVG图标，咱们可以直接上 iconfont下载就完事了【大体的流程就是：进入iconfont网站 -> 找到你想要的图标 -> 鼠标滑到图标上点击下载 -> 然后选择SVG下载】。

一些复杂的svg路径呢我们可以用 Sketch 或者 AI 之类的工具生成，比如说下面我们要做一个飞机划过的动画：

首先 我们在iconfont中找一个飞机的图标，如图：

![](https://oss-cn-hangzhou.aliyuncs.com/codingsky/cdn/img/2022-09-05/1d59261cdf80f1838a94a5d212255792)
image.png然后我们把下载下来的svg图片添加到我们的案例中：

上面这个就是小飞机的svg文件，添加到项目中就是这样

image.png然后咱们再用Sketch弄一个飞机飞行轨迹的路径：

1.gif飞机和运动轨迹的svg都加入项目中以后，我们还需借助一个GSAP的插件（MotionPathPlugin）来实现这个功能。

示例：

<pre style="box-sizing: border-box;font-size: 16px;font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;margin-top: 10px;margin-bottom: 10px;overflow: auto;border-radius: 5px;box-shadow: rgba(0, 0, 0, 0.55) 0px 2px 10px;color: rgb(0, 0, 0);font-style: normal;font-variant-ligatures: normal;font-variant-caps: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 0px;text-transform: none;widows: 2;word-spacing: 0px;-webkit-text-stroke-width: 0px;background-color: rgb(255, 255, 255);text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;">```
<span style="box-sizing: border-box;color: rgb(245, 171, 53);font-weight: bold;line-height: 26px;"><!DOCTYPE <span style="box-sizing: border-box;line-height: 26px;">html><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">lang=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"en"><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">charset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"UTF-8"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">http-equiv=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"X-UA-Compatible" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"IE=edge"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">name=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"viewport" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"width=device-width, initial-scale=1.0"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title>SVG - 动画<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">script <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">src=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"https://cdn.jsdelivr.net/npm/gsap"><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">script><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">script <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">src=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"https://unpkg.com/gsap@3.10.4/dist/MotionPathPlugin.min.js"><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">script><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">style><span style="box-sizing: border-box;line-height: 26px;"><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(220, 198, 224);font-weight: bold;line-height: 26px;">body {<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">width: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">100vw;<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">height: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">100vh;<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">display: flex;<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">justify-content: center;<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">align-items: center;<br style="box-sizing: border-box;"></br>    }<br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">style><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(212, 208, 171);font-style: italic;line-height: 26px;"><!-- 飞机 --><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">id=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"airplane" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"16" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"16" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">class=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"icon" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">viewBox=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0 0 1024 1024" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">version=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"1.1" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">xmlns=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"http://www.w3.org/2000/svg" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">p-id=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"3908" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">xmlns:xlink=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"http://www.w3.org/1999/xlink"><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">defs><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">style <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">type=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"text/css"><span style="box-sizing: border-box;line-height: 26px;"><span style="box-sizing: border-box;color: rgb(220, 198, 224);font-weight: bold;line-height: 26px;">@font-face { <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">font-family: feedback-iconfont; <span style="box-sizing: border-box;color: gold;font-weight: normal;line-height: 26px;">src: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">url(<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"//at.alicdn.com/t/font_1031158_u69w8yhxdu.woff2?t=1630033759944") <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">format(<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"woff2"), <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">url(<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"//at.alicdn.com/t/font_1031158_u69w8yhxdu.woff?t=1630033759944") <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">format(<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"woff"), <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">url(<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"//at.alicdn.com/t/font_1031158_u69w8yhxdu.ttf?t=1630033759944") <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">format(<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"truetype"); }<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">style><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">defs><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">path <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">d=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"M1009.19461 5.118447a32.054274 32.054274 0 0 0-35.125341 0.255922l-959.708789 639.805859a31.830341 31.830341 0 0 0-14.043738 29.942914 31.830341 31.830341 0 0 0 19.929952 26.360002l250.292052 100.161607 117.692288 205.953506a31.990293 31.990293 0 0 0 27.415681 16.123108H415.998608c11.228593 0 21.657428-5.950194 27.415681-15.547283l66.443839-110.782384 310.14589 124.026365a31.734371 31.734371 0 0 0 27.543642-1.855437c8.445437-4.734563 14.23568-13.05204 15.867185-22.617137l159.951465-959.708788A32.054274 32.054274 0 0 0 1009.19461 5.118447zM100.446359 664.662317L841.821398 170.3803 302.784962 747.389214c-2.847136-1.695486-5.374369-3.934806-8.509418-5.182427l-193.829185-77.54447z m225.627536 105.216073l-0.223932-0.319903L931.842082 120.955298 415.230841 925.895049l-89.156946-156.016659z m480.750122 177.322194l-273.229092-109.278841a63.564712 63.564712 0 0 0-19.929952-3.806845L934.401305 181.896806l-127.577288 765.303778z" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#333333" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">p-id=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"3909"><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">path><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg><br style="box-sizing: border-box;"></br><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(212, 208, 171);font-style: italic;line-height: 26px;"><!-- 运行的轨迹 --><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"481px" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">height=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"474px" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">viewBox=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0 0 481 474" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">version=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"1.1" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">xmlns=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"http://www.w3.org/2000/svg" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">xmlns:xlink=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"http://www.w3.org/1999/xlink"><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">g <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">id=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"页面-1" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"none" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke-width=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"1" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"none" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">fill-rule=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"evenodd"><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">path <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">id=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"airplane-path" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">d=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"M0.650866946,473.296875 C9.94351815,378.307292 64.0286458,312.061198 162.90625,274.558594 C205.039435,258.578189 296.032367,243.501651 389.742188,185.972656 C427.061784,163.061943 457.245378,101.237724 480.292969,0.5" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">stroke=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#979797"><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">path><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">g><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg><br style="box-sizing: border-box;"></br><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">script><span style="box-sizing: border-box;line-height: 26px;"><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(212, 208, 171);font-style: italic;line-height: 26px;">// 使用 MotionPathPlugin 插件<br style="box-sizing: border-box;"></br>    gsap.registerPlugin(MotionPathPlugin);<br style="box-sizing: border-box;"></br>    gsap.to(<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#airplane", { <span style="box-sizing: border-box;color: rgb(212, 208, 171);font-style: italic;line-height: 26px;">// 要运动的元素<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;line-height: 26px;">duration: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">3, <span style="box-sizing: border-box;color: rgb(212, 208, 171);font-style: italic;line-height: 26px;">// 时间<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;line-height: 26px;">repeat: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">-1, <span style="box-sizing: border-box;color: rgb(212, 208, 171);font-style: italic;line-height: 26px;">// 循环（1、2、3、4 为循环次数，-1为无限循环）<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;line-height: 26px;">ease: Linear.easeNone, <span style="box-sizing: border-box;color: rgb(212, 208, 171);font-style: italic;line-height: 26px;">// 运动曲线<br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;line-height: 26px;">motionPath:{<br style="box-sizing: border-box;"></br>        <span style="box-sizing: border-box;line-height: 26px;">path: <span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#airplane-path", <span style="box-sizing: border-box;color: rgb(212, 208, 171);font-style: italic;line-height: 26px;">// 运动的轨迹<br style="box-sizing: border-box;"></br>        <span style="box-sizing: border-box;line-height: 26px;">align: <span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"#airplane-path",<br style="box-sizing: border-box;"></br>        <span style="box-sizing: border-box;line-height: 26px;">autoRotate: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">45, <span style="box-sizing: border-box;color: rgb(212, 208, 171);font-style: italic;line-height: 26px;">// 飞机运动旋转角度 （true为自动调整角度）<br style="box-sizing: border-box;"></br>        <span style="box-sizing: border-box;line-height: 26px;">alignOrigin: [<span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">1, <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">1] <span style="box-sizing: border-box;color: rgb(212, 208, 171);font-style: italic;line-height: 26px;">// 飞机的运动原点<br style="box-sizing: border-box;"></br>      }<br style="box-sizing: border-box;"></br>    });<br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">script><br style="box-sizing: border-box;"></br><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html><br style="box-sizing: border-box;"></br>复制代码<br style="box-sizing: border-box;"></br>


效果：

![](https://oss-cn-hangzhou.aliyuncs.com/codingsky/cdn/img/2022-09-05/7fdef29e1f5fa94a115d6a695c0319cf)

feiji.gif我们把运动轨迹隐藏看一下效果会发现更好。

![](https://oss-cn-hangzhou.aliyuncs.com/codingsky/cdn/img/2022-09-05/306ffc406122d2563d69f78aec9ede91)
feiji3.gif接下来我们做一个图形变换的例子。同样的用Sketch创建几个图形的路径：

![](https://oss-cn-hangzhou.aliyuncs.com/codingsky/cdn/img/2022-09-05/abfcb616402b80701beca6c0a021dbf6)

按照上面的操作创建了三角形、矩形、五角星和，然后再在iconfont中找了一只猫和一只狗。下面我们就看一下他们之间的图形变换动画。

首先说一下我们需要用到的一个GSAP的方法：`timeline()`，其次还用到了另一个GSAP的插件：`MorphSVGPlugin3`

和名字一样，它是用来创建一条时间线的。

直接上示例：

<pre style="box-sizing: border-box;font-size: 16px;font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;margin-top: 10px;margin-bottom: 10px;overflow: auto;border-radius: 5px;box-shadow: rgba(0, 0, 0, 0.55) 0px 2px 10px;color: rgb(0, 0, 0);font-style: normal;font-variant-ligatures: normal;font-variant-caps: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 0px;text-transform: none;widows: 2;word-spacing: 0px;-webkit-text-stroke-width: 0px;background-color: rgb(255, 255, 255);text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;">``` <!DOCTYPE html>

<html lang="en">

<head>

 <meta charset="UTF-8">

 <meta http-equiv="X-UA-Compatible" content="IE=edge">

 <meta name="viewport" content="width=device-width, initial-scale=1.0">

 <title>SVG - 动画</title>

 <script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/3.2.6/gsap.min.js"></script>

 <script src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/16327/MorphSVGPlugin3.min.js"></script>

</head>

<body>

 <svg width="400" height="400" viewBox="0 0 1200 1200" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">



 <path id="triangle" d="M183,10 L356,363 L10,263 L183,10 Z" fill="#000000"></path>



 <rect id="rect" fill="#D8D8D8" fill-opacity="0" x="0.5" y="0.5" width="422" height="422"></rect>



 <path id="pentagram" d="M240.5,1.21504532 L314.363147,164.807166 L479.631495,191.057113 L360.039041,318.48039 L388.260044,498.335188 L240.5,413.423321 L92.7399555,498.335188 L120.960959,318.48039 L1.36850495,191.057113 L166.636853,164.807166 L240.5,1.21504532 Z" fill-opacity="0"></path>



 <circle id="circle" fill-opacity="0" cx="500" cy="500" r="400"></circle>



 <path id="cat" d="M 356.26 462.39 s 177.03 1.66 245.84 9.43 c 0 0 62.15 7.77 89.9 3.33 c 0 0 37.58 -18.84 58.82 -26.08 c 10.32 -3.52 17.98 -10.02 29.41 -32.19 c 3.42 -6.64 8.88 -13.32 25.53 -15.54 c 0 0 3.88 23.31 0 35.52 c 0 0 58.83 44.4 44.95 73.25 c 0 0 -9.85 16.28 -19.42 16.65 c -9.43 0.36 -33.85 -3.33 -37.74 0 c 0 0 -38.17 23.09 -42.18 56.61 c -2.27 19.02 -7.95 62.93 1.66 76.58 c 21.37 30.36 118.76 103.78 89.9 118.2 c 0 0 -8.88 4.99 -23.86 -6.66 c 0 0 -41.07 -44.4 -68.26 -54.39 c 0 0 -62.71 -36.07 -73.81 -54.94 c 0 0 -45.51 9.99 -36.07 105.44 c 0 0 8.26 14.74 14.98 19.42 c 4.74 3.3 18.59 21.18 -9.43 21.09 c 0 0 -33.3 3.88 -38.29 -39.96 c 0 0 -3.99 -90.46 -3.66 -118.76 l -161.72 -0.55 l -46.62 53.28 s -14.8 30.48 14.43 53.83 c 2.62 2.1 7.34 7.33 10.54 8.32 c 8.46 2.62 33.3 -2.22 28.86 20.53 c 0 0 -5.51 17.77 -38.85 6.1 c -21.87 -7.65 -44.4 -26.08 -68.26 -62.71 c 0 0 -11.1 -14.98 0 -36.63 c 0 0 11.1 -43.84 -7.21 -41.07 c 0 0 -36.07 38.85 -82.13 38.29 c 0 0 -49.95 -0.55 -51.06 78.25 c 0 0 22.75 23.86 -9.43 24.97 c 0 0 -24.97 2.22 -21.64 -33.85 c 0 0 3.33 -33.85 17.76 -81.02 c 0 0 3.88 -18.31 22.75 -29.97 c 0 0 32.74 -16.01 39.4 -42.41 c 0 0 8.88 -65.81 40.51 -101.32 c 0 0 7.21 -25.53 -8.88 -59.93 c 0 0 -31.08 -54.94 -36.63 -118.2 c 0 0 -1.66 -32.74 -45.51 -82.69 c 0 0 -19.15 -33.85 11.65 -25.53 c 0 0 68.26 37.46 79.08 109.88 c 0.04 0.02 23.63 115.18 64.69 135.43 Z" fill-opacity="0"/>



 <path id="dog" d="M345.711616 469.227l-16.837632 70.654c74.320896-1.946 106.039296-19.359 218.017792-108.401 111.990784-89.029 98.112512-241.945 98.112512-241.945 34.69312-8.709 56.495104-33.879 56.495104-33.879-86.228992-88.063-133.791744 0-133.791744 0l-19.821568 0c-54.509568-29.995-152.619008-13.548-152.619008-13.548-14.86848-86.131-111.665152-17.414-111.665152-17.414 3.309568 29.69 42.957824 24.515 42.962944 24.515 0.013312 0.022 0.034816 0.048 0.048128 0.07-5.976064 77.29-32.164864 114.866-57.283584 133.093-28.628992-2.867-48.479232-5.737-48.479232-5.737-13.213696-45.49-42.615808-39.684-42.615808-39.684-47.565824 3.869-49.549312 128.722 0 186.791C227.782656 481.809 345.711616 469.227 345.711616 469.227zM445.309952 248.08c0.735232-15.481 7.862272-22.595 16.843776-25.447 0.982016 0.581 1.947648 1.154 2.876416 1.716 11.459584 6.939 10.838016 34.543 10.838016 34.543-1.748992 7.785-8.511488 13.662-18.762752 18.026C449.52576 272.741 444.548096 264.179 445.309952 248.08zM349.677568 235.985c13.874176-8.226 26.264576-7.26 26.264576 28.063 0 12.1-9.653248 19.43-22.344704 23.838-1.514496-0.035-3.028992-0.074-4.544512-0.118C343.319552 271.478 338.968576 242.34 349.677568 235.985zM316.6464 487.299l-67.38432-5.169c0 0-23.785472 33.556-25.116672 54.203-1.318912 20.635-11.886592 72.257 42.28608 54.196C320.60416 572.455 316.6464 487.299 316.6464 487.299zM592.812032 413.742c0 0-73.996288 99.359-210.098176 143.238 0 0-62.1056 141.939-76.63616 180.658-14.539776 38.707-39.643136 103.236-13.212672 125.169 26.420224 21.938 101.655552-98.072 128.790528-167.757l15.39584 10.33c0 0-59.61728 101.933-50.371584 140.648 9.245696 38.716 46.532608 74.253 96.448512-56.772 21.1456-55.485 21.1456-55.485 21.1456-55.485s9.2416 68.381 73.991168 100.638c0 0 26.433536-134.187 130.817024-98.052 0 0-107.031552-0.004-101.738496 105.804 0 0-89.851904 16.845-89.851904 39.388 0 22.55 5.27872 51.308 265.601024 17.389 79.280128-10.319 40.950784-149.674 13.206528-193.551C768.545792 661.503 612.630528 500.203 592.812032 413.742zM904.648704 596.98c-29.079552 30.975-113.63328 69.683-113.63328 69.683 26.806272 10.535 34.354176 65.81 34.354176 65.81 13.81376 3.146 22.460416 0 22.460416 0C929.76128 695.05 904.648704 596.98 904.648704 596.98z" fill-opacity="0"/>

 </svg>

 <script>

 // 创建时间线

 let tl = gsap.timeline({

 repeat: -1,

 repeatDelay: 0.2,

 yoyo: true, // 动画回放

 defaults: {

 duration: 2

 }

 })

 // 图形变化过程

 tl

 .to("#triangle", { morphSVG: "#rect" }, "+=1")

 .to("#triangle", { morphSVG: "#pentagram" }, "+=1")

 .to("#triangle", { morphSVG: "#circle" }, "+=1")

 .to("#triangle", { morphSVG: "#cat" }, "+=1")

 .to("#triangle", { morphSVG: "#dog" }, "+=1")

 .timeScale(2);

 </script>

</body>

</html>

复制代码

效果为：

bian.gif最后咱们看一个文字描边动画，今天天气不错，但我只能在家码字。所以就来一个"今天天气不错！"吧。

首先文字的轮廓咱们需要借助AI软件来创建，不然自己写我是写不出来。

上教程：

gif太快还不清楚，需要的可以看视频：今天天气不错创建轮廓[5]

拿到轮廓以后就开始写动画了。

<pre style="box-sizing: border-box;font-size: 16px;font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;margin-top: 10px;margin-bottom: 10px;overflow: auto;border-radius: 5px;box-shadow: rgba(0, 0, 0, 0.55) 0px 2px 10px;color: rgb(0, 0, 0);font-style: normal;font-variant-ligatures: normal;font-variant-caps: normal;font-weight: 400;letter-spacing: normal;orphans: 2;text-align: left;text-indent: 0px;text-transform: none;widows: 2;word-spacing: 0px;-webkit-text-stroke-width: 0px;background-color: rgb(255, 255, 255);text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;">```
<span style="box-sizing: border-box;color: rgb(245, 171, 53);font-weight: bold;line-height: 26px;"><!DOCTYPE <span style="box-sizing: border-box;line-height: 26px;">html><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">lang=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"en"><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">charset=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"UTF-8"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">http-equiv=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"X-UA-Compatible" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"IE=edge"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">meta <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">name=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"viewport" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">content=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"width=device-width, initial-scale=1.0"><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title>SVG - 动画<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">title><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">script <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">src=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"https://cdnjs.cloudflare.com/ajax/libs/gsap/3.2.6/gsap.min.js"><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">script><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">script <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">src=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"https://s3-us-west-2.amazonaws.com/s.cdpn.io/16327/DrawSVGPlugin3.min.js"><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">script><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">head><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br>  <span style="box-sizing: 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26px;">"M582.53,66.14a2.75,2.75,0,0,1,.75,1.7,2.09,2.09,0,0,1-.6,1.6,4,4,0,0,1-2.2,1,13.55,13.55,0,0,1-4.05,0,74.9,74.9,0,0,0-12.5-.35,68.58,68.58,0,0,0-12.1,1.85c-.86.2-1.6,1-2.2,2.35a13.29,13.29,0,0,0-.7,5.85,6.59,6.59,0,0,0,1.75-.6q1.05-.51,2.25-1.2c.8-.47,1.57-1,2.3-1.5a8.69,8.69,0,0,0,1.8-1.7,7.73,7.73,0,0,1,5.2-2.85,7.64,7.64,0,0,1,5.7,2.15,22.25,22.25,0,0,1,2,1.85,4.85,4.85,0,0,1,1,1.5,5.1,5.1,0,0,1,.35,1.65c0,.6.05,1.36.05,2.3-.06,1.46-.1,3.65-.1,6.55s0,5.95.1,9.15a29.39,29.39,0,0,1-1.15,8.75,25.38,25.38,0,0,1-4,8.25c-.8.93-1.58,1.3-2.35,1.1a2.75,2.75,0,0,1-1.75-1.9,50,50,0,0,0-2.25-5.3,17.37,17.37,0,0,0-2.25-3.6,20.46,20.46,0,0,1-3.5,1.2,16.66,16.66,0,0,0-3.4,1.2c.14,1.6-.06,2.51-.6,2.75s-1.7-.59-3.5-2.45a13.74,13.74,0,0,1-2-2.8,11.52,11.52,0,0,1-1.1-3.65,44.81,44.81,0,0,1-.4-5.8q0-3.56.15-9.45a28.86,28.86,0,0,1,.9-7.15,12.77,12.77,0,0,1,3.2-5.25,24,24,0,0,0-3.35.9,33.69,33.69,0,0,0-3.45,1.4,27.93,27.93,0,0,0-3.2,1.75,18.15,18.15,0,0,0-2.6,2,4.17,4.17,0,0,1-1.8,3q2.5-.3.3,3.9a23.53,23.53,0,0,0-1.7,4q-.79,2.4-1.55,5.05t-1.3,5.25c-.36,1.73-.65,3.26-.85,4.6-.33,2.33-.83,3.6-1.5,3.8s-1.87-.37-3.6-1.7a30.36,30.36,0,0,1-2.85-2.65,8.59,8.59,0,0,1-1.65-2.7,13.8,13.8,0,0,1-.75-4q-.15-2.5-.15-6.7c-1,.46-1.93.93-2.8,1.4s-1.6.9-2.2,1.3c-1.26.73-2.25.65-3-.25A8.42,8.42,0,0,1,508,89c-.13-1.87.07-3.14.6-3.8a6.81,6.81,0,0,1,3.1-1.8,10.32,10.32,0,0,0,2.7-1.35,16.93,16.93,0,0,0,2.6-2.2,11.29,11.29,0,0,0,2-2.75,6.66,6.66,0,0,0,.75-3q-2.81,1.59-4.3,1.25c-1-.24-1.66-1.32-2-3.25a6.32,6.32,0,0,1,4-7.8,14.18,14.18,0,0,0,4.5-2.55,25.54,25.54,0,0,0,4.1-4.15,27,27,0,0,1-2.65.7,10.75,10.75,0,0,1-2,.2,7.2,7.2,0,0,1-1.7-.2c-.53-.14-1.13-.3-1.8-.5q-4.39,6.19-7.15,10t-4.8,6.3c-1.37,1.7-2.68,3.2-4,4.5s-2.8,2.81-4.6,4.55c-1.4,1.46-2.66,1.9-3.8,1.3a2.85,2.85,0,0,1-1.4-1.65,3.24,3.24,0,0,1,.1-2.35,6.64,6.64,0,0,1,1.75-2.8c.7-.6,1.22-.84,1.55-.7s1.15-.12,2.05-1a30.83,30.83,0,0,0,3.95-5.35q2.7-4.41,5.15-8.2c1.63-2.54,3.29-5,5-7.5s3.35-4.94,5-7.4l5.45-7.9a6.51,6.51,0,0,0,1.5-3.35,1.43,1.43,0,0,0-1.1-1.55c-.47-.14-.7-.39-.7-.75s.37-.65,1.1-.85a11.52,11.52,0,0,1,4.4-.3,4.9,4.9,0,0,1,2.85,1,4.67,4.67,0,0,1,1.6,2.25,5.81,5.81,0,0,1,.2,2.85,5.46,5.46,0,0,1-1.45,2.8l-2.15,2.5c-.63.73-1.25,1.43-1.85,2.1s-1.18,1.35-1.75,2-1.18,1.48-1.85,2.35a48.91,48.91,0,0,0,5-1.9,17.67,17.67,0,0,0,3.45-1.9,6.27,6.27,0,0,1,3.6-1.6,5.92,5.92,0,0,1,3.5.6,3.77,3.77,0,0,1,1.85,3.5,5.22,5.22,0,0,1-2.55,4.1c-1.2.93-2.23,1.75-3.1,2.45s-1.58,1.3-2.15,1.8a12.12,12.12,0,0,0-1.3,1.3,2.45,2.45,0,0,0-.55,1.15,4.25,4.25,0,0,1,2.75.5,5,5,0,0,1,1.95,1.85,4.14,4.14,0,0,1,.6,2.55,3.88,3.88,0,0,1-1.4,2.6,16,16,0,0,0-1.6,1.85c-.46.63-.9,1.28-1.3,2a13,13,0,0,0,2.9.3c1.6-.67,3.44-1.34,5.5-2s4.27-1.34,6.6-2a9,9,0,0,1-1.2-3,13.07,13.07,0,0,1-3.25-1.5,21.32,21.32,0,0,1-2.75-2.1c-.93-.8-1.31-1.57-1.15-2.3s.92-1.27,2.25-1.6a8.6,8.6,0,0,0,1.2-.25,5.43,5.43,0,0,0,1.1-.5,12.89,12.89,0,0,0,1.3-.9c.47-.37,1.07-.89,1.8-1.55a6.13,6.13,0,0,0,0-3.55,8.15,8.15,0,0,0-1.85-3.15,2.48,2.48,0,0,1-.3-3.5q.9-1.3,3.3-.6a26.85,26.85,0,0,1,2.75,1.1,5,5,0,0,1,1.7,1.25,4.57,4.57,0,0,1,.95,2c.2.8.4,1.86.6,3.2a22.7,22.7,0,0,1,3.55-1.2c1.3-.34,2.62-.64,4-.9a38,38,0,0,0,1.5-8.4c.07-2.14-.06-3.47-.4-4a4.73,4.73,0,0,1-.75-2.45,2.61,2.61,0,0,1,.6-1.65,1.94,1.94,0,0,1,1.5-.6,4.29,4.29,0,0,1,2,.6,13.48,13.48,0,0,1,3.35,2.6,6,6,0,0,1,1.45,3,11,11,0,0,1-.15,4c-.3,1.5-.75,3.31-1.35,5.45a8.76,8.76,0,0,1,4.35.65,3.49,3.49,0,0,1,1.65,2.75,6.48,6.48,0,0,1,.1,1.95,1.72,1.72,0,0,1-1,1.25,8.4,8.4,0,0,1-2.8.75c-1.26.16-3,.31-5.2.45q-1.89,3.2-2.9,5.3a25.06,25.06,0,0,0-1.6,4.4,45.56,45.56,0,0,1,5.45-.9,31.44,31.44,0,0,1,5.65-.1,17,17,0,0,0,3.25-.1,6.94,6.94,0,0,0,1.85-.5,3.53,3.53,0,0,1,2,.3A8.29,8.29,0,0,1,582.53,66.14Zm-51.1,16.3a13.72,13.72,0,0,0-2.6.8,8.35,8.35,0,0,0-2.5,1.5,35.73,35.73,0,0,0-1.65,4.2,28.75,28.75,0,0,0-.8,3.25,16.09,16.09,0,0,0-.25,2.6c0,.76,0,1.51.1,2.25a47.14,47.14,0,0,0,3.6-6.1Q529.32,87,531.43,82.44Zm32,17.8c.14-1.2.22-2.54.25-4s.05-2.95.05-4.45,0-3-.1-4.4-.13-2.65-.2-3.65c-.13-1.34-.48-2.07-1-2.2a4.11,4.11,0,0,0-2.35.4,12.66,12.66,0,0,1-5.55,1.25,9.33,9.33,0,0,1-3.45-.75,2.55,2.55,0,0,0-2.1.1c0,.53,0,1.35,0,2.45s0,2,0,2.55c.47,0,1,0,1.75-.1s1.42-.17,2.15-.3,1.42-.29,2-.45a8.6,8.6,0,0,0,1.35-.45,4.74,4.74,0,0,1,3.65-.75,3.71,3.71,0,0,1,2.35,2.45,2.55,2.55,0,0,1-.1,2.55,5.4,5.4,0,0,1-2.2,1.45l-2.7.9-3,1c-1,.33-2,.61-2.85.85a16.67,16.67,0,0,1-2.35.45,10.21,10.21,0,0,0,.15,2.75,2.12,2.12,0,0,0,1.15,1.65,7.69,7.69,0,0,0,2.65.2,15.83,15.83,0,0,0,2.55-.3,8.28,8.28,0,0,1,3.35-.25,4.69,4.69,0,0,1,2.05,1.35,3,3,0,0,0,1.65.3C563.05,100.77,563.36,100.57,563.43,100.24Zm-5.7-43.6a2.57,2.57,0,0,0-2.75-1,4.28,4.28,0,0,0-2.45,1.6,15.7,15.7,0,0,0-.95,3.95,16.31,16.31,0,0,0,.25,4,1.33,1.33,0,0,0,.8-.3,6.55,6.55,0,0,0,1.1-1.2,20.9,20.9,0,0,0,1.65-2.6Q556.34,59.43,557.73,56.64Z"/><br style="box-sizing: border-box;"></br>      <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">path <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">id=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"g" <span style="box-sizing: border-box;color: rgb(0, 128, 128);line-height: 26px;">d=<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"M607,89.44a14.37,14.37,0,0,1-2.2,7.4c-1.47,2.46-2.86,3.7-4.2,3.7a4.33,4.33,0,0,1-3.35-1.5q-1.35-1.5-1.35-5a17.66,17.66,0,0,1,1.8-7.4q1.8-4,3.7-4a4.05,4.05,0,0,1,2,.55,6.06,6.06,0,0,1,1.8,1.5,7.62,7.62,0,0,1,1.3,2.2A6.85,6.85,0,0,1,607,89.44Zm21.3-59.9a7.65,7.65,0,0,1,2.2-.3q4.41,0,7.6,4.4l-15.3,22.7q-3.71,5.49-6.8,10.3t-5.7,9.1c.67.06,1,.4,1,1a4.58,4.58,0,0,1-1.4,2.5,3.5,3.5,0,0,1-2.5,1.6q-1.09,0-3-2.1a6.61,6.61,0,0,1-1.8-4Q602.63,72,628.33,29.54Z"/><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">g><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">svg><br style="box-sizing: border-box;"></br><br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"><<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">script><span style="box-sizing: border-box;line-height: 26px;"><br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(212, 208, 171);font-style: italic;line-height: 26px;">// 创建时间线<br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(220, 198, 224);font-weight: bold;line-height: 26px;">let tl = gsap.timeline({ <span style="box-sizing: border-box;line-height: 26px;">repeat: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">-1 })<br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(212, 208, 171);font-style: italic;line-height: 26px;">// 获取所有的path(也就是字)<br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(220, 198, 224);font-weight: bold;line-height: 26px;">var letters = <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">document.querySelectorAll(<span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"path")<br style="box-sizing: border-box;"></br>    <span style="box-sizing: border-box;color: rgb(220, 198, 224);font-weight: bold;line-height: 26px;">for(<span style="box-sizing: border-box;color: rgb(220, 198, 224);font-weight: bold;line-height: 26px;">var i = <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">0; i<letters.length; i++) {<br style="box-sizing: border-box;"></br>      tl.fromTo(<br style="box-sizing: border-box;"></br>        letters[i],<br style="box-sizing: border-box;"></br>        { <span style="box-sizing: border-box;line-height: 26px;">drawSVG: <span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"0%" },<br style="box-sizing: border-box;"></br>        { <span style="box-sizing: border-box;line-height: 26px;">duration: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">1, <span style="box-sizing: border-box;line-height: 26px;">drawSVG: <span style="box-sizing: border-box;color: rgb(171, 227, 56);line-height: 26px;">"100%", <span style="box-sizing: border-box;line-height: 26px;">stagger: <span style="box-sizing: border-box;color: rgb(245, 171, 53);line-height: 26px;">1 },<br style="box-sizing: border-box;"></br>      )<br style="box-sizing: border-box;"></br>    }<br style="box-sizing: border-box;"></br>  <span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">script><br style="box-sizing: border-box;"></br><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">body><br style="box-sizing: border-box;"></br><span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;"></<span style="box-sizing: border-box;color: rgb(255, 160, 122);font-weight: normal;line-height: 26px;">html><br style="box-sizing: border-box;"></br><br style="box-sizing: border-box;"></br>复制代码<br style="box-sizing: border-box;"></br>



效果：

![](https://oss-cn-hangzhou.aliyuncs.com/codingsky/cdn/img/2022-09-05/b7726130853cd541c6c7dcca49376b41)
jintian.gif

到此咱们SVG的基础内容就打算完成了。

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案例+图解带你一文读懂SVG （2.6W+字）

前言

简介

概念

优势

缺点

浏览器兼容性

语法

属性

width、height

viewBox

version

版本 1.x

版本 2

xmlns和xmlns:xlink

基本图形

圆形（circle）

矩形（rect）

椭圆（ellipse）

线条（line）

折线（polyline）

多边形（polygon）

路径（path）

路径（path）

命令

直线命令

M（Move to）

L（Line to）

H（Horizontal Line to）

V（Vertical Line to）

Z（Close path）

曲线命令

Q（Quadratic Bezier Curve to）

T（Smooth Quadratic Bezier Curve to）

C（Curve to）

S（Smooth Curve to）

A（Elliptical Arc）

填充和轮廓

fill

fill-opacity

evenodd

stroke-width

stroke-linecap

stroke-dasharray

stroke-miterlimit

x和y

rotate

textLength

fill和stroke

image.png tspan

image.png tref

image.png 渐变

线性渐变

image.png 蒙层

scale（缩放）

transform-origin

image.png JS动画

CSS动画

补间类型

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