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                    前言
            
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                    1-2 常见的构建工具及对比
            
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                    1-3 安装与使用
            
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                    1-4 使用 Loader
            
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                    1-5 使用 Plugin
            
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                    1-6 使用 DevServer
            
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                    1-7 核心概念
            
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                    第2章 配置
            
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                    2-1 Entry
            
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                    2-2 Output
            
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                    2-3 Module
            
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                    2-4 Resolve
            
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                    2-5 Plugins
            
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                    2-6 DevServer
            
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                    2-7 其它配置项
            
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                    2-8 整体配置结构
            
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                    2-9 多种配置类型
            
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                    2-10 配置总结
            
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                    第3章 实战
            
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                    3-1 使用 ES6 语言
            
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                    3-2 使用 TypeScript 语言
            
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                    3-3 使用 Flow 检查器
            
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                    3-4 使用 SCSS
            
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                    3-5 使用 PostCSS
            
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                    3-6 使用 React 框架
            
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                    3-7 使用 Vue 框架
            
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                    3-8 使用 Angular2 框架
            
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                    3-9 为单页应用生成 HTML
            
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                    3-10 管理多个单页应用
            
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                    3-11 构建同构应用
            
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                    3-12 构建 Electron 应用
            
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                    3-13 构建 Npm 模块
            
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                    3-14 构建离线应用
            
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                    3-15 搭配 Npm Script
            
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                    3-16 检查代码
            
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                    3-17 通过 Node.js API 启动 Webpack
            
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                    3-18 使用 Webpack Dev Middleware
            
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                    3-19 加载图片
            
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                    3-20 加载SVG
            
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                    3-21 加载 Source Map
            
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                    3-22 实战总结
            
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                    第4章 优化
            
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                    4-1 缩小文件搜索范围
            
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                    4-2 使用 DllPlugin
            
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                    4-3 使用 HappyPack
            
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                    4-4 使用 ParallelUglifyPlugin
            
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                    4-5 使用自动刷新
            
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                    4-6 开启模块热替换
            
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                    4-7 区分环境
            
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                    4-8 压缩代码
            
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                    4-9 CDN 加速
            
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<li class="chapter " data-level="1.6.10" data-path="../4优化/4-10使用TreeShaking.html">
  
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                    4-10 使用 Tree Shaking
            
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<li class="chapter " data-level="1.6.11" data-path="../4优化/4-11提取公共代码.html">
  
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                    4-11 提取公共代码
            
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<li class="chapter " data-level="1.6.12" data-path="../4优化/4-12按需加载.html">
  
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                    4-12 按需加载
            
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<li class="chapter " data-level="1.6.13" data-path="../4优化/4-13使用Prepack.html">
  
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                    4-13 使用 Prepack
            
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<li class="chapter " data-level="1.6.14" data-path="../4优化/4-14开启ScopeHoisting.html">
  
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                    4-14 开启 Scope Hoisting
            
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<li class="chapter " data-level="1.6.15" data-path="../4优化/4-15输出分析.html">
  
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                    4-15 输出分析
            
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<li class="chapter " data-level="1.6.16" data-path="../4优化/4-16优化总结.html">
  
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                    4-16 优化总结
            
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<li class="chapter " data-level="1.7" data-path="../5原理/">
  
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                    第5章 原理
            
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                                <h1 id="3-20-&#x52A0;&#x8F7D;-svg">3-20 &#x52A0;&#x8F7D; SVG</h1>
<p>SVG &#x4F5C;&#x4E3A;&#x77E2;&#x91CF;&#x56FE;&#x7684;&#x4E00;&#x79CD;&#x6807;&#x51C6;&#x683C;&#x5F0F;&#xFF0C;&#x5DF2;&#x7ECF;&#x5F97;&#x5230;&#x4E86;&#x5404;&#x5927;&#x6D4F;&#x89C8;&#x5668;&#x7684;&#x652F;&#x6301;&#xFF0C;&#x5B83;&#x4E5F;&#x6210;&#x4E3A;&#x4E86; Web &#x4E2D;&#x77E2;&#x91CF;&#x56FE;&#x7684;&#x4EE3;&#x540D;&#x8BCD;&#x3002;
&#x5728;&#x7F51;&#x9875;&#x4E2D;&#x91C7;&#x7528; SVG &#x4EE3;&#x66FF;&#x4F4D;&#x56FE;&#x6709;&#x5982;&#x4E0B;&#x597D;&#x5904;&#xFF1A;</p>
<ol>
<li>SVG &#x76F8;&#x5BF9;&#x4E8E;&#x4F4D;&#x56FE;&#x66F4;&#x6E05;&#x6670;&#xFF0C;&#x5728;&#x4EFB;&#x610F;&#x7F29;&#x653E;&#x7684;&#x60C5;&#x51B5;&#x4E0B;&#x540E;&#x4E0D;&#x4F1A;&#x7834;&#x574F;&#x56FE;&#x5F62;&#x7684;&#x6E05;&#x6670;&#x5EA6;&#xFF0C;SVG &#x80FD;&#x65B9;&#x4FBF;&#x5730;&#x89E3;&#x51B3;&#x9AD8;&#x5206;&#x8FA8;&#x7387;&#x5C4F;&#x5E55;&#x4E0B;&#x56FE;&#x50CF;&#x663E;&#x793A;&#x4E0D;&#x6E05;&#x695A;&#x7684;&#x95EE;&#x9898;&#x3002;</li>
<li>&#x5728;&#x56FE;&#x5F62;&#x7EBF;&#x6761;&#x6BD4;&#x8F83;&#x7B80;&#x5355;&#x7684;&#x60C5;&#x51B5;&#x4E0B;&#xFF0C;SVG &#x6587;&#x4EF6;&#x7684;&#x5927;&#x5C0F;&#x8981;&#x5C0F;&#x4E8E;&#x4F4D;&#x56FE;&#xFF0C;&#x5728;&#x6241;&#x5E73;&#x5316; UI &#x6D41;&#x884C;&#x7684;&#x4ECA;&#x5929;&#xFF0C;&#x591A;&#x6570;&#x60C5;&#x51B5;&#x4E0B; SVG &#x4F1A;&#x66F4;&#x5C0F;&#x3002;</li>
<li>&#x56FE;&#x5F62;&#x76F8;&#x540C;&#x7684; SVG &#x6BD4;&#x5BF9;&#x5E94;&#x7684;&#x9AD8;&#x6E05;&#x56FE;&#x6709;&#x66F4;&#x597D;&#x7684;&#x6E32;&#x67D3;&#x6027;&#x80FD;&#x3002;</li>
<li>SVG &#x91C7;&#x7528;&#x548C; HTML &#x4E00;&#x81F4;&#x7684; XML &#x8BED;&#x6CD5;&#x63CF;&#x8FF0;&#xFF0C;&#x7075;&#x6D3B;&#x6027;&#x5F88;&#x9AD8;&#x3002;</li>
</ol>
<p></p><p>&#x60F3;&#x6DF1;&#x5165;&#x5B66;&#x4E60; SVG&#xFF0C;&#x63A8;&#x8350;&#x300A;SVG&#x7CBE;&#x9AD3;&#x300B;&#xFF1A;</p>
<a href="http://union-click.jd.com/jdc?d=uak7Pz" target="_blank">
<img src="http://img13.360buyimg.com/n1/jfs/t2431/271/998042670/346747/69c6325b/5639703cN4392d3bf.jpg">
</a><p></p>
<p>&#x753B;&#x56FE;&#x5DE5;&#x5177;&#x80FD;&#x5BFC;&#x51FA;&#x4E00;&#x4E2A;&#x4E2A; <code>.svg</code> &#x6587;&#x4EF6;&#xFF0C;SVG &#x7684;&#x5BFC;&#x5165;&#x65B9;&#x6CD5;&#x548C;&#x56FE;&#x7247;&#x7C7B;&#x4F3C;&#xFF0C;&#x65E2;&#x53EF;&#x4EE5;&#x50CF;&#x4E0B;&#x9762;&#x8FD9;&#x6837;&#x5728; CSS &#x4E2D;&#x76F4;&#x63A5;&#x4F7F;&#x7528;&#xFF1A;</p>
<pre><code class="lang-css"><span class="hljs-selector-tag">body</span> {
  <span class="hljs-attribute">background-image</span>: <span class="hljs-built_in">url</span>(./svgs/activity.svg);
}
</code></pre>
<p>&#x4E5F;&#x53EF;&#x4EE5;&#x5728; HTML &#x4E2D;&#x4F7F;&#x7528;&#xFF1A;</p>
<pre><code class="lang-html"><span class="hljs-tag">&lt;<span class="hljs-name">img</span> <span class="hljs-attr">src</span>=<span class="hljs-string">&quot;./svgs/activity.svg&quot;</span>/&gt;</span>
</code></pre>
<p>&#x4E5F;&#x5C31;&#x662F;&#x8BF4;&#x53EF;&#x4EE5;&#x76F4;&#x63A5;&#x628A; SVG &#x6587;&#x4EF6;&#x5F53;&#x6210;&#x4E00;&#x5F20;&#x56FE;&#x7247;&#x6765;&#x4F7F;&#x7528;&#xFF0C;&#x65B9;&#x6CD5;&#x548C;&#x4F7F;&#x7528;&#x56FE;&#x7247;&#x65F6;&#x5B8C;&#x5168;&#x4E00;&#x6837;&#x3002;
&#x6240;&#x4EE5;&#x5728; <a href="3-19&#x52A0;&#x8F7D;&#x56FE;&#x7247;.html">3-19 &#x52A0;&#x8F7D;&#x56FE;&#x7247;</a> &#x4E2D;&#x4ECB;&#x7ECD;&#x7684;&#x4E24;&#x79CD;&#x65B9;&#x6CD5; <strong>&#x4F7F;&#x7528; file-loader</strong> &#x548C; <strong>&#x4F7F;&#x7528; url-loader</strong>
&#x5BF9; SVG &#x6765;&#x8BF4;&#x540C;&#x6837;&#x6709;&#x6548;&#xFF0C;&#x53EA;&#x9700;&#x8981;&#x628A; Loader test &#x914D;&#x7F6E;&#x4E2D;&#x7684;&#x6587;&#x4EF6;&#x540E;&#x7F00;&#x6539;&#x6210; <code>.svg</code>&#xFF0C;&#x4EE3;&#x7801;&#x5982;&#x4E0B;&#xFF1A;</p>
<pre><code class="lang-js"><span class="hljs-built_in">module</span>.exports = {
  <span class="hljs-built_in">module</span>: {
    rules: [
      {
        test: <span class="hljs-regexp">/\.svg/</span>,
        use: [<span class="hljs-string">&apos;file-loader&apos;</span>]
      }
    ]
  },
};
</code></pre>
<p>&#x7531;&#x4E8E; SVG &#x662F;&#x6587;&#x672C;&#x683C;&#x5F0F;&#x7684;&#x6587;&#x4EF6;&#xFF0C;&#x9664;&#x4E86;&#x4EE5;&#x4E0A;&#x4E24;&#x79CD;&#x65B9;&#x6CD5;&#x5916;&#x8FD8;&#x6709;&#x5176;&#x5B83;&#x65B9;&#x6CD5;&#xFF0C;&#x4E0B;&#x9762;&#x6765;&#x4E00;&#x4E00;&#x8BF4;&#x660E;&#x3002;</p>
<h2 id="&#x4F7F;&#x7528;-raw-loader">&#x4F7F;&#x7528; raw-loader</h2>
<p><a href="https://github.com/webpack-contrib/raw-loader" target="_blank">raw-loader</a> &#x53EF;&#x4EE5;&#x628A;&#x6587;&#x672C;&#x6587;&#x4EF6;&#x7684;&#x5185;&#x5BB9;&#x8BFB;&#x53D6;&#x51FA;&#x6765;&#xFF0C;&#x6CE8;&#x5165;&#x5230; JavaScript &#x6216; CSS &#x4E2D;&#x53BB;&#x3002;</p>
<p>&#x4F8B;&#x5982;&#x5728; JavaScript &#x4E2D;&#x8FD9;&#x6837;&#x5199;&#xFF1A;</p>
<pre><code class="lang-js"><span class="hljs-keyword">import</span> svgContent <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;./svgs/alert.svg&apos;</span>;
</code></pre>
<p>&#x7ECF;&#x8FC7; raw-loader &#x5904;&#x7406;&#x540E;&#x8F93;&#x51FA;&#x7684;&#x4EE3;&#x7801;&#x5982;&#x4E0B;&#xFF1A;</p>
<pre><code class="lang-js"><span class="hljs-built_in">module</span>.exports = <span class="hljs-string">&quot;&lt;svg xmlns=\&quot;http://www.w3.org/2000/svg\&quot;... &lt;/svg&gt;&quot;</span> <span class="hljs-comment">// &#x672B;&#x5C3E;&#x7701;&#x7565; SVG &#x5185;&#x5BB9;</span>
</code></pre>
<p>&#x4E5F;&#x5C31;&#x662F;&#x8BF4; <code>svgContent</code> &#x7684;&#x5185;&#x5BB9;&#x5C31;&#x7B49;&#x4E8E;&#x5B57;&#x7B26;&#x4E32;&#x5F62;&#x5F0F;&#x7684; SVG&#xFF0C;&#x7531;&#x4E8E; SVG &#x672C;&#x8EAB;&#x5C31;&#x662F; HTML &#x5143;&#x7D20;&#xFF0C;&#x5728;&#x83B7;&#x53D6;&#x5230; SVG &#x5185;&#x5BB9;&#x540E;&#xFF0C;&#x53EF;&#x4EE5;&#x76F4;&#x63A5;&#x901A;&#x8FC7;&#x4EE5;&#x4E0B;&#x4EE3;&#x7801;&#x5C06; SVG &#x63D2;&#x5165;&#x5230;&#x7F51;&#x9875;&#x4E2D;&#xFF1A;</p>
<pre><code class="lang-js"><span class="hljs-built_in">window</span>.document.getElementById(<span class="hljs-string">&apos;app&apos;</span>).innerHTML = svgContent;
</code></pre>
<p>&#x4F7F;&#x7528; raw-loader &#x65F6;&#x76F8;&#x5173;&#x7684; Webpack &#x914D;&#x7F6E;&#x5982;&#x4E0B;&#xFF1A;</p>
<pre><code class="lang-js"><span class="hljs-built_in">module</span>.exports = {
  <span class="hljs-built_in">module</span>: {
    rules: [
      {
        test: <span class="hljs-regexp">/\.svg$/</span>,
        use: [<span class="hljs-string">&apos;raw-loader&apos;</span>]
      }
    ]
  }
};
</code></pre>
<blockquote>
<p>&#x7531;&#x4E8E; raw-loader &#x4F1A;&#x76F4;&#x63A5;&#x8FD4;&#x56DE; SVG &#x7684;&#x6587;&#x672C;&#x5185;&#x5BB9;&#xFF0C;&#x5E76;&#x4E14;&#x65E0;&#x6CD5;&#x901A;&#x8FC7; CSS &#x53BB;&#x5C55;&#x793A; SVG &#x7684;&#x6587;&#x672C;&#x5185;&#x5BB9;&#xFF0C;&#x56E0;&#x6B64;&#x91C7;&#x7528;&#x672C;&#x65B9;&#x6CD5;&#x540E;&#x65E0;&#x6CD5;&#x5728; CSS &#x4E2D;&#x5BFC;&#x5165; SVG&#x3002;
&#x4E5F;&#x5C31;&#x662F;&#x8BF4;&#x5728; CSS &#x4E2D;&#x4E0D;&#x53EF;&#x4EE5;&#x51FA;&#x73B0; <code>background-image: url(./svgs/activity.svg)</code> &#x8FD9;&#x6837;&#x7684;&#x4EE3;&#x7801;&#xFF0C;&#x56E0;&#x4E3A; <code>background-image: url(&lt;svg&gt;...&lt;/svg&gt;)</code> &#x662F;&#x4E0D;&#x5408;&#x6CD5;&#x7684;&#x3002;</p>
<p>&#x672C;&#x5B9E;&#x4F8B;<a href="http://webpack.wuhaolin.cn/3-20&#x52A0;&#x8F7D;SVG-raw-loader.zip" target="_blank">&#x63D0;&#x4F9B;&#x9879;&#x76EE;&#x5B8C;&#x6574;&#x4EE3;&#x7801;</a></p>
</blockquote>
<h2 id="&#x4F7F;&#x7528;-svg-inline-loader">&#x4F7F;&#x7528; svg-inline-loader</h2>
<p><a href="https://github.com/webpack-contrib/svg-inline-loader" target="_blank">svg-inline-loader</a> &#x548C;&#x4E0A;&#x9762;&#x63D0;&#x5230;&#x7684; raw-loader &#x975E;&#x5E38;&#x76F8;&#x4F3C;&#xFF0C;
&#x4E0D;&#x540C;&#x5728;&#x4E8E; svg-inline-loader &#x4F1A;&#x5206;&#x6790; SVG &#x7684;&#x5185;&#x5BB9;&#xFF0C;&#x53BB;&#x9664;&#x5176;&#x4E2D;&#x4E0D;&#x5FC5;&#x8981;&#x7684;&#x90E8;&#x5206;&#x4EE3;&#x7801;&#xFF0C;&#x4EE5;&#x51CF;&#x5C11; SVG &#x7684;&#x6587;&#x4EF6;&#x5927;&#x5C0F;&#x3002;</p>
<p>&#x5728;&#x4F7F;&#x7528;&#x753B;&#x56FE;&#x5DE5;&#x5177;&#x5982; Adobe Illustrator&#x3001;Sketch &#x5236;&#x4F5C; SVG &#x540E;&#xFF0C;&#x5728;&#x5BFC;&#x51FA;&#x65F6;&#x8FD9;&#x4E9B;&#x5DE5;&#x5177;&#x4F1A;&#x751F;&#x6210;&#x5BF9;&#x7F51;&#x9875;&#x8FD0;&#x884C;&#x6765;&#x8BF4;&#x4E0D;&#x5FC5;&#x8981;&#x7684;&#x4EE3;&#x7801;&#x3002;
&#x4E3E;&#x4E2A;&#x4F8B;&#x5B50;&#xFF0C;&#x4EE5;&#x4E0B;&#x662F; Sketch &#x5BFC;&#x51FA;&#x7684; SVG &#x7684;&#x4EE3;&#x7801;&#xFF1A;</p>
<pre><code class="lang-xml"><span class="hljs-tag">&lt;<span class="hljs-name">svg</span> <span class="hljs-attr">class</span>=<span class="hljs-string">&quot;icon&quot;</span> <span class="hljs-attr">verison</span>=<span class="hljs-string">&quot;1.1&quot;</span> <span class="hljs-attr">xmlns</span>=<span class="hljs-string">&quot;http://www.w3.org/2000/svg&quot;</span> <span class="hljs-attr">width</span>=<span class="hljs-string">&quot;24&quot;</span> <span class="hljs-attr">height</span>=<span class="hljs-string">&quot;24&quot;</span> <span class="hljs-attr">viewBox</span>=<span class="hljs-string">&quot;0 0 24 24&quot;</span>
     <span class="hljs-attr">stroke</span>=<span class="hljs-string">&quot;#000&quot;</span>&gt;</span>
  <span class="hljs-tag">&lt;<span class="hljs-name">circle</span> <span class="hljs-attr">cx</span>=<span class="hljs-string">&quot;12&quot;</span> <span class="hljs-attr">cy</span>=<span class="hljs-string">&quot;12&quot;</span> <span class="hljs-attr">r</span>=<span class="hljs-string">&quot;10&quot;</span>/&gt;</span>
<span class="hljs-tag">&lt;/<span class="hljs-name">svg</span>&gt;</span>
</code></pre>
<p>&#x88AB; svg-inline-loader &#x5904;&#x7406;&#x540E;&#x4F1A;&#x7CBE;&#x7B80;&#x6210;&#x5982;&#x4E0B;&#xFF1A;</p>
<pre><code class="lang-xml"><span class="hljs-tag">&lt;<span class="hljs-name">svg</span> <span class="hljs-attr">viewBox</span>=<span class="hljs-string">&quot;0 0 24 24&quot;</span> <span class="hljs-attr">stroke</span>=<span class="hljs-string">&quot;#000&quot;</span>&gt;</span><span class="hljs-tag">&lt;<span class="hljs-name">circle</span> <span class="hljs-attr">cx</span>=<span class="hljs-string">&quot;12&quot;</span> <span class="hljs-attr">cy</span>=<span class="hljs-string">&quot;12&quot;</span> <span class="hljs-attr">r</span>=<span class="hljs-string">&quot;10&quot;</span>/&gt;</span><span class="hljs-tag">&lt;/<span class="hljs-name">svg</span>&gt;</span>
</code></pre>
<p>&#x4E5F;&#x5C31;&#x662F;&#x8BF4; svg-inline-loader &#x589E;&#x52A0;&#x4E86;&#x5BF9; SVG &#x7684;&#x538B;&#x7F29;&#x529F;&#x80FD;&#x3002;</p>
<p>&#x4F7F;&#x7528; svg-inline-loader &#x65F6;&#x76F8;&#x5173;&#x7684; Webpack &#x914D;&#x7F6E;&#x5982;&#x4E0B;&#xFF1A;</p>
<pre><code class="lang-js"><span class="hljs-built_in">module</span>.exports = {
  <span class="hljs-built_in">module</span>: {
    rules: [
      {
        test: <span class="hljs-regexp">/\.svg$/</span>,
        use: [<span class="hljs-string">&apos;svg-inline-loader&apos;</span>]
      }
    ]
  }
};
</code></pre>
<blockquote>
<p>&#x672C;&#x5B9E;&#x4F8B;<a href="http://webpack.wuhaolin.cn/3-20&#x52A0;&#x8F7D;SVG-svg-inline-loader.zip" target="_blank">&#x63D0;&#x4F9B;&#x9879;&#x76EE;&#x5B8C;&#x6574;&#x4EE3;&#x7801;</a></p>
</blockquote>

                                
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