svg-icon原理解析

javascript
  目录
  1. 1. svg-icon原理解析

svg-icon在html中使用原理

svg-icon原理解析

最近发现svg-icon在vue中使用频率很高，一些管理系统的模板都已经把它集成进去了。
svg-icon在vue中是如何工作的呢？
1) 首先，需要一些svg的图形文件
2) 在代码中把这些svg文件require进去
3) 使用svg-sprite-loader这个webpack插件，它可以把svg文件以标签形式插入到html中
4) 创建一个vue的svg-icon组件，用来显示svg图形，其实不创建组件直接写svg标签代码也可以
5) 使用vue的svg-icon组件来展示图形
以上就是使用步骤，下面贴出一套svg的原生demo：

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
<!DOCTYPE html>
<html>
<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-icon</title>
</head>
<body>
  <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" style="position: absolute; width: 0; height: 0" id="__SVG_SPRITE_NODE__">
    <symbol xmlns="http://www.w3.org/2000/svg" viewBox="0 0 128 128" id="icon-tree-table"><path d="M44.8 0h79.543C126.78 0 128 1.422 128 4.267v23.466c0 2.845-1.219 4.267-3.657 4.267H44.8c-2.438 0-3.657-1.422-3.657-4.267V4.267C41.143 1.422 42.362 0 44.8 0zm22.857 48h56.686c2.438 0 3.657 1.422 3.657 4.267v23.466c0 2.845-1.219 4.267-3.657 4.267H67.657C65.22 80 64 78.578 64 75.733V52.267C64 49.422 65.219 48 67.657 48zm0 48h56.686c2.438 0 3.657 1.422 3.657 4.267v23.466c0 2.845-1.219 4.267-3.657 4.267H67.657C65.22 128 64 126.578 64 123.733v-23.466C64 97.422 65.219 96 67.657 96zM50.286 68.267c2.02 0 3.657-1.91 3.657-4.267 0-2.356-1.638-4.267-3.657-4.267H17.37V32h6.4c2.02 0 3.658-1.91 3.658-4.267V4.267C27.429 1.91 25.79 0 23.77 0H3.657C1.637 0 0 1.91 0 4.267v23.466C0 30.09 1.637 32 3.657 32h6.4v80c0 2.356 1.638 4.267 3.657 4.267h36.572c2.02 0 3.657-1.91 3.657-4.267 0-2.356-1.638-4.267-3.657-4.267H17.37V68.267h32.915z"></path></symbol>
    <symbol xmlns="http://www.w3.org/2000/svg" viewBox="0 0 128 128" id="icon-tree"><path d="M126.713 90.023c.858.985 1.287 2.134 1.287 3.447v29.553c0 1.423-.429 2.6-1.287 3.53-.858.93-1.907 1.395-3.146 1.395H97.824c-1.145 0-2.146-.465-3.004-1.395-.858-.93-1.287-2.107-1.287-3.53V93.47c0-.875.19-1.696.572-2.462.382-.766.906-1.368 1.573-1.806a3.84 3.84 0 0 1 2.146-.657h9.725V69.007a3.84 3.84 0 0 0-.43-1.806 3.569 3.569 0 0 0-1.143-1.313 2.714 2.714 0 0 0-1.573-.492h-36.47v23.149h9.725c1.144 0 2.145.492 3.004 1.478.858.985 1.287 2.134 1.287 3.447v29.553c0 .876-.191 1.696-.573 2.463-.38.766-.905 1.368-1.573 1.806a3.84 3.84 0 0 1-2.145.656H51.915a3.84 3.84 0 0 1-2.145-.656c-.668-.438-1.216-1.04-1.645-1.806a4.96 4.96 0 0 1-.644-2.463V93.47c0-1.313.43-2.462 1.288-3.447.858-.986 1.907-1.478 3.146-1.478h9.582v-23.15h-37.9c-.953 0-1.74.356-2.359 1.068-.62.711-.93 1.56-.93 2.544v19.538h9.726c1.239 0 2.264.492 3.074 1.478.81.985 1.216 2.134 1.216 3.447v29.553c0 1.423-.405 2.6-1.216 3.53-.81.93-1.835 1.395-3.074 1.395H4.29c-.476 0-.93-.082-1.358-.246a4.1 4.1 0 0 1-1.144-.657 4.658 4.658 0 0 1-.93-1.067 5.186 5.186 0 0 1-.643-1.395 5.566 5.566 0 0 1-.215-1.56V93.47c0-.437.048-.875.143-1.313a3.95 3.95 0 0 1 .429-1.15c.19-.328.429-.656.715-.984.286-.329.572-.602.858-.821.286-.22.62-.383 1.001-.493.382-.11.763-.164 1.144-.164h9.726V61.619c0-.985.31-1.833.93-2.544.619-.712 1.358-1.068 2.216-1.068h44.335V39.62h-9.582c-1.24 0-2.288-.492-3.146-1.477a5.09 5.09 0 0 1-1.287-3.448V5.14c0-1.423.429-2.627 1.287-3.612.858-.985 1.907-1.477 3.146-1.477h25.743c.763 0 1.478.246 2.145.739a5.17 5.17 0 0 1 1.573 1.888c.382.766.573 1.587.573 2.462v29.553c0 1.313-.43 2.463-1.287 3.448-.859.985-1.86 1.477-3.004 1.477h-9.725v18.389h42.762c.954 0 1.74.355 2.36 1.067.62.711.93 1.56.93 2.545v26.925h9.582c1.239 0 2.288.492 3.146 1.478z"></path></symbol>
    <symbol xmlns="http://www.w3.org/2000/svg" viewBox="0 0 130 130" id="icon-user"><path d="M63.444 64.996c20.633 0 37.359-14.308 37.359-31.953 0-17.649-16.726-31.952-37.359-31.952-20.631 0-37.36 14.303-37.358 31.952 0 17.645 16.727 31.953 37.359 31.953zM80.57 75.65H49.434c-26.652 0-48.26 18.477-48.26 41.27v2.664c0 9.316 21.608 9.325 48.26 9.325H80.57c26.649 0 48.256-.344 48.256-9.325v-2.663c0-22.794-21.605-41.271-48.256-41.271z" stroke="#979797"></path></symbol>
    <symbol xmlns="http://www.w3.org/2000/svg" viewBox="0 0 128 110" id="icon-wechat"><path d="M86.635 33.334c1.467 0 2.917.113 4.358.283C87.078 14.392 67.58.111 45.321.111 20.44.111.055 17.987.055 40.687c0 13.104 6.781 23.863 18.115 32.209l-4.527 14.352 15.82-8.364c5.666 1.182 10.207 2.395 15.858 2.395 1.42 0 2.829-.073 4.227-.189-.886-3.19-1.398-6.53-1.398-9.996 0-20.845 16.98-37.76 38.485-37.76zm-24.34-12.936c3.407 0 5.665 2.363 5.665 5.954 0 3.576-2.258 5.97-5.666 5.97-3.392 0-6.795-2.395-6.795-5.97 0-3.591 3.403-5.954 6.795-5.954zM30.616 32.323c-3.393 0-6.818-2.395-6.818-5.971 0-3.591 3.425-5.954 6.818-5.954 3.392 0 5.65 2.363 5.65 5.954 0 3.576-2.258 5.97-5.65 5.97z"></path><path d="M127.945 70.52c0-19.075-18.108-34.623-38.448-34.623-21.537 0-38.5 15.548-38.5 34.623 0 19.108 16.963 34.622 38.5 34.622 4.508 0 9.058-1.2 13.584-2.395l12.414 7.167-3.404-11.923c9.087-7.184 15.854-16.712 15.854-27.471zm-50.928-5.97c-2.254 0-4.53-2.362-4.53-4.773 0-2.378 2.276-4.771 4.53-4.771 3.422 0 5.665 2.393 5.665 4.771 0 2.41-2.243 4.773-5.665 4.773zm24.897 0c-2.24 0-4.498-2.362-4.498-4.773 0-2.378 2.258-4.771 4.498-4.771 3.392 0 5.665 2.393 5.665 4.771 0 2.41-2.273 4.773-5.665 4.773z"></path></symbol>
    <symbol xmlns="http://www.w3.org/2000/svg" viewBox="0 0 128 128" id="icon-zip"><path d="M78.527 116.793c.178.008.348.024.527.024h40.233c4.711-.005 8.53-3.677 8.534-8.21V18.895c-.004-4.532-3.823-8.204-8.534-8.209H79.054c-.179 0-.353.016-.527.024V0L0 10.082v107.406l78.527 10.342v-11.037zm0-101.362c.174-.024.348-.052.527-.052h40.233c2.018 0 3.659 1.578 3.659 3.52v89.713c-.003 1.942-1.64 3.517-3.659 3.519H79.054c-.179 0-.353-.028-.527-.052V15.431zM30.262 75.757l-18.721-.46V72.37l11.3-16.673v-.148l-10.266.164v-4.51l17.504-.44v3.264L18.696 70.76v.144l11.566.176v4.678zm9.419.231l-5.823-.144V50.671l5.823-.144v25.461zm22.255-11.632c-2.168 1.922-5.353 2.76-9.02 2.736-.702.004-1.402-.04-2.097-.131v9.303l-5.997-.148V50.743c1.852-.352 4.473-.647 8.218-.743 3.838-.096 6.608.539 8.48 1.913 1.807 1.306 3.032 3.5 3.032 6.112s-.926 4.833-2.612 6.331h-.004zM53.36 54.45c-.856-.01-1.71.083-2.541.275v7.682c.523.116 1.167.152 2.06.152 3.301-.004 5.36-1.614 5.36-4.314 0-2.425-1.772-3.843-4.875-3.791l-.004-.004zm39.847-37.066h9.564v3.795h-9.564v-3.795zm-9.568 5.68h9.564v3.8h-9.564v-3.8zm9.568 6.216h9.564v3.799h-9.564V29.28zm0 12h9.564v3.794h-9.564V41.28zm-9.568-6.096h9.564v3.795h-9.564v-3.795zm9.472 47.064c2.512 0 4.921-.96 6.697-2.67 1.776-1.708 2.773-4.026 2.772-6.442l-1.748-15.263c0-5.033-2.492-9.112-7.725-9.112-5.232 0-7.72 4.079-7.72 9.112l-1.752 15.263c-.001 2.417.996 4.735 2.773 6.444 1.777 1.71 4.187 2.669 6.7 2.668h.003zm-3.135-16.75h6.27v12.743h-6.27V65.5z"></path></symbol>
  </svg>
  <div>
    <p>
      <svg>
        <use xlink:href="#icon-tree-table"></use>
      </svg>
    </p>
    <p>
      <svg>
        <use xlink:href="#icon-tree"></use>
      </svg>
    </p>
    <p>
      <svg>
        <use xlink:href="#icon-user"></use>
      </svg>
    </p>
    <p>
      <svg>
        <use xlink:href="#icon-wechat"></use>
      </svg>
    </p>
    <p>
      <svg>
        <use xlink:href="#icon-zip"></use>
      </svg>
    </p>
  </div>
</body>
</html>

  web图形