npm install -g create-react-app /* 安裝create-react-app */ npm install -g create-react-app /* 安裝yarn */ create-react-app myapp /* 使用命令建立應用,myapp爲項目名稱 */ cd myapp /* 進入目錄 */ yarn start /* 啓動項目 */
按以上執行,便可快速建立React開發環境。css
打開http://localhost:3000/ 查看html
生成項目後,腳手架爲了「優雅」... ...隱藏了全部的webpack相關的配置文件,此時查看myapp文件夾目錄,會發現找不到任何webpack配置文件。執行如下命令:node
yarn eject
再查看myapp 文件夾,能夠看到完整的項目結構:react
myapp/ node_modules/ package.json .gitignore config/ paths.js polyfills env.js webpack.config.dev.js /* 開發環境配置文件 */ webpack.config.prod.js /* 生產環境配置文件 */ public/ index.html /* 入口html文件 */ scripts/ build.js start.js test.js src/ App.js index.js /* 主入口文件 */
yarn add antd babel-plugin-import
按需引入webpack
爲減小打包後體積以及方便書寫,可用babel-plugin-import插件,配置在config目錄下,git
webpack.config.dev.js 和 webpack.config.prod.js文件,這裏以webpack.config.dev.js舉例,github
webpack.config.prod.js同樣配置便可:web
// Process JS with Babel. { test: /\.(js|jsx)$/, include: paths.appSrc, loader: require.resolve('babel-loader'), options: { // 改動: 添加 antd 按需加載文件處理插件 plugins: [ //['react-html-attrs'],//添加babel-plugin-react-html-attrs組件的插件配置 // 引入樣式爲 css ['import', { libraryName: 'antd', style: 'css' }], // 改動: 引入樣式爲 less // ['import', { libraryName: 'antd', style: true }], ], // This is a feature of `babel-loader` for webpack (not Babel itself). // It enables caching results in ./node_modules/.cache/babel-loader/ // directory for faster rebuilds. cacheDirectory: true, }, },
引入模塊以下:npm
// scr/App.js import React, { Component } from 'react'; - import Button from 'antd/lib/button'; + import { Button } from 'antd'; import './App.css';
antd 和 css modules 不能混用,看知乎大神說 能夠json
針對antd的css 單獨寫一條loader的規則,不開啓 css modules。
配置在config目錄下,一樣修改配置 webpack.config.dev.js 文件
{ test: /\.css$/, exclude: /node_modules|antd\.css/, use: [ require.resolve('style-loader'), { loader: require.resolve('css-loader'), options: { importLoaders: 1, // 改動 modules: true, // 新增對css modules的支持 localIdentName: '[name]__[local]__[hash:base64:5]', // }, }, { loader: require.resolve('postcss-loader'), options: { // Necessary for external CSS imports to work // https://github.com/facebookincubator/create-react-app/issues/2677 ident: 'postcss', plugins: () => [ require('postcss-flexbugs-fixes'), autoprefixer({ browsers: [ '>1%', 'last 4 versions', 'Firefox ESR', 'not ie < 9', // React doesn't support IE8 anyway ], flexbox: 'no-2009', }), ], }, }, ], }, // { test: /\.css$/, include: /node_modules|antd\.css/, use: [ require.resolve('style-loader'), { loader: require.resolve('css-loader'), options: { importLoaders: 1, // 改動 // modules: true, // 新增對css modules的支持 // localIdentName: '[name]__[local]__[hash:base64:5]', // }, }, { loader: require.resolve('postcss-loader'), options: { // Necessary for external CSS imports to work // https://github.com/facebookincubator/create-react-app/issues/2677 ident: 'postcss', plugins: () => [ require('postcss-flexbugs-fixes'), autoprefixer({ browsers: [ '>1%', 'last 4 versions', 'Firefox ESR', 'not ie < 9', // React doesn't support IE8 anyway ], flexbox: 'no-2009', }), ], }, }, ], },
下面是一個 antd 的 Button 和本身寫的CSS Modules 使用小例子:
import React, { Component } from 'react'; import { addRecipe } from '../actions'; import { Button } from 'antd'; import styles from './App.css' class App extends Component { state = { calendar: null } componentDidMount() { const { store } = this.props // 從props獲取store store.subscribe(() => { // 訂閱 redux store 中發生的任何變化 this.setState(() => ({ // 有任何變化須要調用 setState calendar: store.getState() // 將從store中獲取state將它放入本地組件state中 })) }) } submitFood = () => { this.props.store.dispatch(addRecipe({//store.dispatch調用addRecipe動做生成器 day: 'monday', meal: 'breakfast', recipe: { label: this.input.value } })) this.input.value = ''//將輸入值重置爲一個空的字符串 } render() { return ( <div> <input type='text' ref={(input)=>this.input = input} placeholder="Monday's Breakfast" /> <Button type="primary" onClick={this.submitFood}>Submit</Button> <pre className={styles.input}>Monday's Breakfast:{this.state.calendar&&this.state.calendar.monday.breakfast}</pre> </div> ); } } export default App
參考學習 CSS Modules 的阮一峯老師寫的用法教程
這裏簡單使用下 react-css-modules,代碼以下:
import React, { Component } from 'react'; import { addRecipe } from '../actions'; import { Button } from 'antd'; import CSSModules from 'react-css-modules' import styles from './App.css' class App extends Component { state = { calendar: null } componentDidMount() { const { store } = this.props // 從props獲取store store.subscribe(() => { // 訂閱 redux store 中發生的任何變化 this.setState(() => ({ // 有任何變化須要調用 setState calendar: store.getState() // 將從store中獲取state將它放入本地組件state中 })) }) } submitFood = () => { this.props.store.dispatch(addRecipe({//store.dispatch調用addRecipe動做生成器 day: 'monday', meal: 'breakfast', recipe: { label: this.input.value } })) this.input.value = ''//將輸入值重置爲一個空的字符串 } render() { return ( <div> <input type='text' ref={(input)=>this.input = input} placeholder="Monday's Breakfast" /> <Button type="primary" onClick={this.submitFood}>Submit</Button> <pre styleName='input'>Monday's Breakfast:{this.state.calendar&&this.state.calendar.monday.breakfast}</pre> </div> ); } } export default CSSModules(App, styles);
主要差異在於:
+ import CSSModules from 'react-css-modules' - <pre className={styles.input}> + <pre styleName='input'> - export default App + export default CSSModules(App, styles);