87 lines
17 KiB
Vue
87 lines
17 KiB
Vue
<template><h1 id="提取-css-成单独文件" tabindex="-1"><a class="header-anchor" href="#提取-css-成单独文件" aria-hidden="true">#</a> 提取 Css 成单独文件</h1>
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<p>Css 文件目前被打包到 js 文件中，当 js 文件加载时，会创建一个 style 标签来生成样式</p>
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<p>这样对于网站来说，会出现闪屏现象，用户体验不好</p>
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<p>我们应该是单独的 Css 文件，通过 link 标签加载性能才好</p>
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<h2 id="_1-下载包" tabindex="-1"><a class="header-anchor" href="#_1-下载包" aria-hidden="true">#</a> 1. 下载包</h2>
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<div class="language-text ext-text"><pre v-pre class="language-text"><code>npm i mini-css-extract-plugin -D
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</code></pre></div><h2 id="_2-配置" tabindex="-1"><a class="header-anchor" href="#_2-配置" aria-hidden="true">#</a> 2. 配置</h2>
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<ul>
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<li>webpack.prod.js</li>
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</ul>
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<div class="language-javascript ext-js line-numbers-mode"><pre v-pre class="language-javascript"><code><span class="token keyword">const</span> path <span class="token operator">=</span> <span class="token function">require</span><span class="token punctuation">(</span><span class="token string">"path"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">const</span> ESLintWebpackPlugin <span class="token operator">=</span> <span class="token function">require</span><span class="token punctuation">(</span><span class="token string">"eslint-webpack-plugin"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">const</span> HtmlWebpackPlugin <span class="token operator">=</span> <span class="token function">require</span><span class="token punctuation">(</span><span class="token string">"html-webpack-plugin"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">const</span> MiniCssExtractPlugin <span class="token operator">=</span> <span class="token function">require</span><span class="token punctuation">(</span><span class="token string">"mini-css-extract-plugin"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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module<span class="token punctuation">.</span>exports <span class="token operator">=</span> <span class="token punctuation">{</span>
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<span class="token literal-property property">entry</span><span class="token operator">:</span> <span class="token string">"./src/main.js"</span><span class="token punctuation">,</span>
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<span class="token literal-property property">output</span><span class="token operator">:</span> <span class="token punctuation">{</span>
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<span class="token literal-property property">path</span><span class="token operator">:</span> path<span class="token punctuation">.</span><span class="token function">resolve</span><span class="token punctuation">(</span>__dirname<span class="token punctuation">,</span> <span class="token string">"../dist"</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
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<span class="token literal-property property">filename</span><span class="token operator">:</span> <span class="token string">"static/js/main.js"</span><span class="token punctuation">,</span>
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<span class="token literal-property property">clean</span><span class="token operator">:</span> <span class="token boolean">true</span><span class="token punctuation">,</span>
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<span class="token punctuation">}</span><span class="token punctuation">,</span>
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<span class="token literal-property property">module</span><span class="token operator">:</span> <span class="token punctuation">{</span>
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<span class="token literal-property property">rules</span><span class="token operator">:</span> <span class="token punctuation">[</span>
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<span class="token punctuation">{</span>
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<span class="token literal-property property">test</span><span class="token operator">:</span> <span class="token regex"><span class="token regex-delimiter">/</span><span class="token regex-source language-regex">\.css$</span><span class="token regex-delimiter">/</span></span><span class="token punctuation">,</span>
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<span class="token comment">// 将 style-loader 替换成 MiniCssExtractPlugin.loader</span>
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<span class="token literal-property property">use</span><span class="token operator">:</span> <span class="token punctuation">[</span>MiniCssExtractPlugin<span class="token punctuation">.</span>loader<span class="token punctuation">,</span> <span class="token string">"css-loader"</span><span class="token punctuation">]</span><span class="token punctuation">,</span>
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<span class="token punctuation">}</span><span class="token punctuation">,</span>
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<span class="token punctuation">{</span>
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<span class="token literal-property property">test</span><span class="token operator">:</span> <span class="token regex"><span class="token regex-delimiter">/</span><span class="token regex-source language-regex">\.less$</span><span class="token regex-delimiter">/</span></span><span class="token punctuation">,</span>
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<span class="token literal-property property">use</span><span class="token operator">:</span> <span class="token punctuation">[</span>MiniCssExtractPlugin<span class="token punctuation">.</span>loader<span class="token punctuation">,</span> <span class="token string">"css-loader"</span><span class="token punctuation">,</span> <span class="token string">"less-loader"</span><span class="token punctuation">]</span><span class="token punctuation">,</span>
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<span class="token punctuation">}</span><span class="token punctuation">,</span>
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<span class="token punctuation">{</span>
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<span class="token literal-property property">test</span><span class="token operator">:</span> <span class="token regex"><span class="token regex-delimiter">/</span><span class="token regex-source language-regex">\.s[ac]ss$</span><span class="token regex-delimiter">/</span></span><span class="token punctuation">,</span>
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<span class="token literal-property property">use</span><span class="token operator">:</span> <span class="token punctuation">[</span>MiniCssExtractPlugin<span class="token punctuation">.</span>loader<span class="token punctuation">,</span> <span class="token string">"css-loader"</span><span class="token punctuation">,</span> <span class="token string">"sass-loader"</span><span class="token punctuation">]</span><span class="token punctuation">,</span>
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<span class="token punctuation">}</span><span class="token punctuation">,</span>
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<span class="token punctuation">{</span>
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<span class="token literal-property property">test</span><span class="token operator">:</span> <span class="token regex"><span class="token regex-delimiter">/</span><span class="token regex-source language-regex">\.styl$</span><span class="token regex-delimiter">/</span></span><span class="token punctuation">,</span>
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<span class="token literal-property property">use</span><span class="token operator">:</span> <span class="token punctuation">[</span>MiniCssExtractPlugin<span class="token punctuation">.</span>loader<span class="token punctuation">,</span> <span class="token string">"css-loader"</span><span class="token punctuation">,</span> <span class="token string">"stylus-loader"</span><span class="token punctuation">]</span><span class="token punctuation">,</span>
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<span class="token punctuation">}</span><span class="token punctuation">,</span>
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<span class="token punctuation">{</span>
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<span class="token literal-property property">test</span><span class="token operator">:</span> <span class="token regex"><span class="token regex-delimiter">/</span><span class="token regex-source language-regex">\.(png|jpe?g|gif|webp)$</span><span class="token regex-delimiter">/</span></span><span class="token punctuation">,</span>
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<span class="token literal-property property">type</span><span class="token operator">:</span> <span class="token string">"asset"</span><span class="token punctuation">,</span>
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<span class="token literal-property property">parser</span><span class="token operator">:</span> <span class="token punctuation">{</span>
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<span class="token literal-property property">dataUrlCondition</span><span class="token operator">:</span> <span class="token punctuation">{</span>
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<span class="token literal-property property">maxSize</span><span class="token operator">:</span> <span class="token number">40</span> <span class="token operator">*</span> <span class="token number">1024</span><span class="token punctuation">,</span>
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<span class="token punctuation">}</span><span class="token punctuation">,</span>
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<span class="token punctuation">}</span><span class="token punctuation">,</span>
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<span class="token literal-property property">generator</span><span class="token operator">:</span> <span class="token punctuation">{</span>
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<span class="token literal-property property">filename</span><span class="token operator">:</span> <span class="token string">"static/imgs/[hash:8][ext][query]"</span><span class="token punctuation">,</span>
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<span class="token punctuation">}</span><span class="token punctuation">,</span>
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<span class="token punctuation">}</span><span class="token punctuation">,</span>
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<span class="token punctuation">{</span>
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<span class="token literal-property property">test</span><span class="token operator">:</span> <span class="token regex"><span class="token regex-delimiter">/</span><span class="token regex-source language-regex">\.(ttf|woff2?)$</span><span class="token regex-delimiter">/</span></span><span class="token punctuation">,</span>
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<span class="token literal-property property">type</span><span class="token operator">:</span> <span class="token string">"asset/resource"</span><span class="token punctuation">,</span>
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<span class="token literal-property property">generator</span><span class="token operator">:</span> <span class="token punctuation">{</span>
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<span class="token literal-property property">filename</span><span class="token operator">:</span> <span class="token string">"static/media/[hash:8][ext][query]"</span><span class="token punctuation">,</span>
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<span class="token punctuation">}</span><span class="token punctuation">,</span>
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<span class="token punctuation">}</span><span class="token punctuation">,</span>
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<span class="token punctuation">{</span>
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<span class="token literal-property property">test</span><span class="token operator">:</span> <span class="token regex"><span class="token regex-delimiter">/</span><span class="token regex-source language-regex">\.js$</span><span class="token regex-delimiter">/</span></span><span class="token punctuation">,</span>
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<span class="token literal-property property">exclude</span><span class="token operator">:</span> <span class="token regex"><span class="token regex-delimiter">/</span><span class="token regex-source language-regex">node_modules</span><span class="token regex-delimiter">/</span></span><span class="token punctuation">,</span>
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<span class="token literal-property property">loader</span><span class="token operator">:</span> <span class="token string">"babel-loader"</span><span class="token punctuation">,</span>
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<span class="token punctuation">}</span><span class="token punctuation">,</span>
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<span class="token punctuation">]</span><span class="token punctuation">,</span>
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<span class="token punctuation">}</span><span class="token punctuation">,</span>
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<span class="token literal-property property">plugins</span><span class="token operator">:</span> <span class="token punctuation">[</span>
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<span class="token keyword">new</span> <span class="token class-name">ESLintWebpackPlugin</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
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<span class="token literal-property property">context</span><span class="token operator">:</span> path<span class="token punctuation">.</span><span class="token function">resolve</span><span class="token punctuation">(</span>__dirname<span class="token punctuation">,</span> <span class="token string">"../src"</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
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<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
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<span class="token comment">// 会自动引入打包生成的css</span>
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<span class="token keyword">new</span> <span class="token class-name">HtmlWebpackPlugin</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
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<span class="token literal-property property">template</span><span class="token operator">:</span> path<span class="token punctuation">.</span><span class="token function">resolve</span><span class="token punctuation">(</span>__dirname<span class="token punctuation">,</span> <span class="token string">"../public/index.html"</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
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<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
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<span class="token comment">// 提取css成单独文件</span>
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<span class="token keyword">new</span> <span class="token class-name">MiniCssExtractPlugin</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
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<span class="token comment">// 定义输出文件名和目录</span>
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<span class="token literal-property property">filename</span><span class="token operator">:</span> <span class="token string">"static/css/main.css"</span><span class="token punctuation">,</span>
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<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
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<span class="token punctuation">]</span><span class="token punctuation">,</span>
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<span class="token literal-property property">mode</span><span class="token operator">:</span> <span class="token string">"production"</span><span class="token punctuation">,</span>
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<span class="token punctuation">}</span><span class="token punctuation">;</span>
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</code></pre><div class="line-numbers" aria-hidden="true"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br><span class="line-number">12</span><br><span class="line-number">13</span><br><span class="line-number">14</span><br><span class="line-number">15</span><br><span class="line-number">16</span><br><span class="line-number">17</span><br><span class="line-number">18</span><br><span class="line-number">19</span><br><span class="line-number">20</span><br><span class="line-number">21</span><br><span class="line-number">22</span><br><span class="line-number">23</span><br><span class="line-number">24</span><br><span class="line-number">25</span><br><span class="line-number">26</span><br><span class="line-number">27</span><br><span class="line-number">28</span><br><span class="line-number">29</span><br><span class="line-number">30</span><br><span class="line-number">31</span><br><span class="line-number">32</span><br><span class="line-number">33</span><br><span class="line-number">34</span><br><span class="line-number">35</span><br><span class="line-number">36</span><br><span class="line-number">37</span><br><span class="line-number">38</span><br><span class="line-number">39</span><br><span class="line-number">40</span><br><span class="line-number">41</span><br><span class="line-number">42</span><br><span class="line-number">43</span><br><span class="line-number">44</span><br><span class="line-number">45</span><br><span class="line-number">46</span><br><span class="line-number">47</span><br><span class="line-number">48</span><br><span class="line-number">49</span><br><span class="line-number">50</span><br><span class="line-number">51</span><br><span class="line-number">52</span><br><span class="line-number">53</span><br><span class="line-number">54</span><br><span class="line-number">55</span><br><span class="line-number">56</span><br><span class="line-number">57</span><br><span class="line-number">58</span><br><span class="line-number">59</span><br><span class="line-number">60</span><br><span class="line-number">61</span><br><span class="line-number">62</span><br><span class="line-number">63</span><br><span class="line-number">64</span><br><span class="line-number">65</span><br><span class="line-number">66</span><br><span class="line-number">67</span><br><span class="line-number">68</span><br><span class="line-number">69</span><br><span class="line-number">70</span><br><span class="line-number">71</span><br><span class="line-number">72</span><br><span class="line-number">73</span><br></div></div><h2 id="_3-运行指令" tabindex="-1"><a class="header-anchor" href="#_3-运行指令" aria-hidden="true">#</a> 3. 运行指令</h2>
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<div class="language-text ext-text"><pre v-pre class="language-text"><code>npm run build
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</code></pre></div></template>
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