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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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- 3-1 使用 ES6 语言
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- 3-2 使用 TypeScript 语言
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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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-
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- 4-16 优化总结
-
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-
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- </ul>
-
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- <li class="chapter " data-level="1.7" data-path="../5原理/">
-
- <a href="../5原理/">
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-
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-
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-
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- 5-1 工作原理概括
-
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- <li class="chapter " data-level="1.7.2" data-path="../5原理/5-2输出文件分析.html">
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- 5-2 输出文件分析
-
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- 5-3 编写 Loader
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- 5-5 调试 Webpack
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-
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- 5-6 原理总结
-
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-
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- <h1 id="3-7-使用-vue-框架">3-7 使用 Vue 框架</h1>
- <p><a href="https://cn.vuejs.org" target="_blank">Vue</a> 是一个渐进式的 MVVM 框架,相比于 React、Angular 它更灵活轻量。
- 它不会强制性地内置一些功能和语法,你可以根据自己的需要一点点地添加功能。
- 虽然采用 Vue 的项目能用可直接运行在浏览器环境里的代码编写,但为了方便编码大多数项目都会采用 Vue 官方的<a href="https://cn.vuejs.org/v2/guide/single-file-components.html#介绍" target="_blank">单文件组件</a>的写法去编写项目。
- 由于直接引用 Vue 是古老和成熟的做法,本书只专注于讲解如何用 Webpack 构建 Vue 单文件组件。</p>
- <h2 id="认识-vue">认识 Vue</h2>
- <p>Vue 和 React 一样,它们都推崇组件化和由数据驱动视图的思想,视图和数据绑定在一起,数据改变视图会跟着改变,而无需直接操作视图。
- 还是以前面的 <code>Hello,Webpack</code> 为例,来看下 Vue 版本的实现。</p>
- <p><code>App.vue</code> 文件代表一个单文件组件,它是项目唯一的组件,也是根组件:</p>
- <pre><code class="lang-html"><span class="hljs-comment"><!--渲染模版--></span>
- <span class="hljs-tag"><<span class="hljs-name">template</span>></span>
- <span class="hljs-tag"><<span class="hljs-name">h1</span>></span>{{ msg }}<span class="hljs-tag"></<span class="hljs-name">h1</span>></span>
- <span class="hljs-tag"></<span class="hljs-name">template</span>></span>
- <span class="hljs-comment"><!--样式描述--></span>
- <span class="hljs-tag"><<span class="hljs-name">style</span> <span class="hljs-attr">scoped</span>></span><span class="css">
- <span class="hljs-selector-tag">h1</span> {
- <span class="hljs-attribute">color</span>: red;
- }
- </span><span class="hljs-tag"></<span class="hljs-name">style</span>></span>
- <span class="hljs-comment"><!--组件逻辑--></span>
- <span class="hljs-tag"><<span class="hljs-name">script</span>></span><span class="javascript">
- <span class="hljs-keyword">export</span> <span class="hljs-keyword">default</span> {
- data() {
- <span class="hljs-keyword">return</span> {
- msg: <span class="hljs-string">'Hello,Webpack'</span>
- }
- }
- }
- </span><span class="hljs-tag"></<span class="hljs-name">script</span>></span>
- </code></pre>
- <p>Vue 的单文件组件通过一个类似 HTML 文件的 <code>.vue</code> 文件就能描述清楚一个组件所需的模版、样式、逻辑。</p>
- <p><code>main.js</code> 入口文件:</p>
- <pre><code class="lang-js"><span class="hljs-keyword">import</span> Vue <span class="hljs-keyword">from</span> <span class="hljs-string">'vue'</span>
- <span class="hljs-keyword">import</span> App <span class="hljs-keyword">from</span> <span class="hljs-string">'./App.vue'</span>
- <span class="hljs-keyword">new</span> Vue({
- el: <span class="hljs-string">'#app'</span>,
- render: h => h(App)
- });
- </code></pre>
- <p>入口文件创建一个 Vue 的根实例,在 ID 为 <code>app</code> 的 DOM 节点上渲染出上面定义的 <code>App</code> 组件。</p>
- <p></p><p>想深入学习 深入 Vue,推荐《Vue.js权威指南》:</p>
- <a href="http://union-click.jd.com/jdc?d=Fdmv9t" target="_blank">
- <img src="http://img14.360buyimg.com/n1/jfs/t3049/211/1135504925/129375/cc072102/57c6862aN329b23fd.jpg">
- </a><p></p>
- <h2 id="接入-webpack">接入 Webpack</h2>
- <p>目前最成熟和流行的开发 Vue 项目的方式是采用 ES6 加 Babel 转换,这和基本的采用 ES6 开发的项目很相似,差别在于要解析 <code>.vue</code> 格式的单文件组件。
- 好在 Vue 官方提供了对应的 <a href="https://vue-loader.vuejs.org/zh-cn/" target="_blank">vue-loader</a> 可以非常方便的完成单文件组件的转换。</p>
- <p>修改 Webpack 相关配置如下:</p>
- <pre><code class="lang-js"><span class="hljs-built_in">module</span>: {
- rules: [
- {
- test: <span class="hljs-regexp">/\.vue$/</span>,
- use: [<span class="hljs-string">'vue-loader'</span>],
- },
- ]
- }
- </code></pre>
- <p>安装新引入的依赖:</p>
- <pre><code class="lang-bash"><span class="hljs-comment"># Vue 框架运行需要的库</span>
- npm i -S vue
- <span class="hljs-comment"># 构建所需的依赖</span>
- npm i -D vue-loader css-loader vue-template-compiler
- </code></pre>
- <p>在这些依赖中,它们的作用分别是:</p>
- <ul>
- <li><code>vue-loader</code>:解析和转换 <code>.vue</code> 文件,提取出其中的逻辑代码 <code>script</code>、样式代码 <code>style</code>、以及 HTML 模版 <code>template</code>,再分别把它们交给对应的 Loader 去处理。</li>
- <li><code>css-loader</code>:加载由 <code>vue-loader</code> 提取出的 CSS 代码。</li>
- <li><code>vue-template-compiler</code>:把 <code>vue-loader</code> 提取出的 HTML 模版编译成对应的可执行的 JavaScript 代码,这和 React 中的 JSX 语法被编译成 JavaScript 代码类似。预先编译好 HTML 模版相对于在浏览器中再去编译 HTML 模版的好处在于性能更好。</li>
- </ul>
- <p>重新启动构建你就能看到由 Vue 渲染出的 <code>Hello,Webpack</code> 了。</p>
- <blockquote>
- <p>本实例<a href="http://webpack.wuhaolin.cn/3-7使用Vue框架Babel.zip" target="_blank">提供项目完整代码</a></p>
- </blockquote>
- <h2 id="使用-typescript-编写-vue-应用">使用 TypeScript 编写 Vue 应用</h2>
- <p>从 Vue 2.5.0+ 版本开始,提供了对 TypeScript 的良好支持,使用 TypeScript 编写 Vue 是一个很好的选择,因为 TypeScript 能检查出一些潜在的错误。
- 下面讲解如何用 Webpack 构建使用 TypeScript 编写的 Vue 应用。</p>
- <p>新增 <code>tsconfig.json</code> 配置文件,内容如下:</p>
- <pre><code class="lang-json">{
- <span class="hljs-string">"compilerOptions"</span>: {
- <span class="hljs-comment">// 构建出 ES5 版本的 JavaScript,与 Vue 的浏览器支持保持一致</span>
- <span class="hljs-string">"target"</span>: <span class="hljs-string">"es5"</span>,
- <span class="hljs-comment">// 开启严格模式,这可以对 `this` 上的数据属性进行更严格的推断</span>
- <span class="hljs-string">"strict"</span>: <span class="hljs-literal">true</span>,
- <span class="hljs-comment">// TypeScript 编译器输出的 JavaScript 采用 es2015 模块化,使 Tree Shaking 生效</span>
- <span class="hljs-string">"module"</span>: <span class="hljs-string">"es2015"</span>,
- <span class="hljs-string">"moduleResolution"</span>: <span class="hljs-string">"node"</span>
- }
- }
- </code></pre>
- <p>以上代码中的 <code>"module": "es2015"</code> 是为了 Tree Shaking 优化生效,阅读 <a href="../4优化/4-10使用TreeShaking.html">4-10 使用 TreeShaking</a> 进一步了解。</p>
- <p>修改 <code>App.vue</code> 脚本部分内容如下:</p>
- <pre><code class="lang-html"><span class="hljs-comment"><!--组件逻辑--></span>
- <span class="hljs-tag"><<span class="hljs-name">script</span> <span class="hljs-attr">lang</span>=<span class="hljs-string">"ts"</span>></span><span class="javascript">
- <span class="hljs-keyword">import</span> Vue <span class="hljs-keyword">from</span> <span class="hljs-string">"vue"</span>;
- <span class="hljs-comment">// 通过 Vue.extend 启用 TypeScript 类型推断</span>
- <span class="hljs-keyword">export</span> <span class="hljs-keyword">default</span> Vue.extend({
- data() {
- <span class="hljs-keyword">return</span> {
- msg: <span class="hljs-string">'Hello,Webpack'</span>,
- }
- },
- });
- </span><span class="hljs-tag"></<span class="hljs-name">script</span>></span>
- </code></pre>
- <p>注意 script 标签中的 <code>lang="ts"</code> 是为了指明代码的语法是 TypeScript。</p>
- <p>修改 <code>main.ts</code> 执行入口文件为如下:</p>
- <pre><code class="lang-typescript"><span class="hljs-keyword">import</span> Vue from <span class="hljs-string">'vue'</span>
- <span class="hljs-keyword">import</span> App from <span class="hljs-string">'./App.vue'</span>
- <span class="hljs-keyword">new</span> Vue({
- el: <span class="hljs-string">'#app'</span>,
- render: h => h(App)
- });
- </code></pre>
- <p>由于 TypeScript 不认识 <code>.vue</code> 结尾的文件,为了让其支持 <code>import App from './App.vue'</code> 导入语句,还需要以下文件 <code>vue-shims.d.ts</code> 去定义 <code>.vue</code> 的类型:</p>
- <pre><code class="lang-typescript"><span class="hljs-comment">// 告诉 TypeScript 编译器 .vue 文件其实是一个 Vue </span>
- <span class="hljs-keyword">declare</span> <span class="hljs-keyword">module</span> "*.vue" {
- <span class="hljs-keyword">import</span> Vue from <span class="hljs-string">"vue"</span>;
- <span class="hljs-keyword">export</span> <span class="hljs-keyword">default</span> Vue;
- }
- </code></pre>
- <p>Webpack 配置需要修改两个地方,如下:</p>
- <pre><code class="lang-js"><span class="hljs-keyword">const</span> path = <span class="hljs-built_in">require</span>(<span class="hljs-string">'path'</span>);
- <span class="hljs-built_in">module</span>.exports = {
- resolve: {
- <span class="hljs-comment">// 增加对 TypeScript 的 .ts 和 .vue 文件的支持</span>
- extensions: [<span class="hljs-string">'.ts'</span>, <span class="hljs-string">'.js'</span>, <span class="hljs-string">'.vue'</span>, <span class="hljs-string">'.json'</span>],
- },
- <span class="hljs-built_in">module</span>: {
- rules: [
- <span class="hljs-comment">// 加载 .ts 文件</span>
- {
- test: <span class="hljs-regexp">/\.ts$/</span>,
- loader: <span class="hljs-string">'ts-loader'</span>,
- exclude: <span class="hljs-regexp">/node_modules/</span>,
- options: {
- <span class="hljs-comment">// 让 tsc 把 vue 文件当成一个 TypeScript 模块去处理,以解决 moudle not found 的问题,tsc 本身不会处理 .vue 结尾的文件</span>
- appendTsSuffixTo: [<span class="hljs-regexp">/\.vue$/</span>],
- }
- },
- ]
- },
- };
- </code></pre>
- <p>除此之外还需要安装新引入的依赖:</p>
- <pre><code class="lang-bash">npm i -D ts-loader typescript
- </code></pre>
- <blockquote>
- <p>本实例<a href="http://webpack.wuhaolin.cn/3-7使用Vue框架TypeScript.zip" target="_blank">提供项目完整代码</a></p>
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- <script src="../gitbook/gitbook-plugin-search/search.js"></script>
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- <script src="../gitbook/gitbook-plugin-lunr/lunr.min.js"></script>
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- <script src="../gitbook/gitbook-plugin-lunr/search-lunr.js"></script>
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- <script src="../gitbook/gitbook-plugin-sharing/buttons.js"></script>
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- <script src="../gitbook/gitbook-plugin-fontsettings/fontsettings.js"></script>
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- </body>
- </html>
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