Cette fois, je vais vous apporter une explication détaillée de l'utilisation de webpack2+React Quelles sont les précautions lors de l'utilisation de webpack2+React. Voici des cas pratiques, jetons un coup d'œil.
1. Les plug-ins impliqués doivent être installés par npm install ;
2.html-webpack-plugin crée des fichiers HTML qui servent le bundle webpack
3.clean-webpack-plugin efface les fichiers en double dans la distribution ; répertoire ;
4.extract-text-webpack-plugin sépare les fichiers CSS.
var path = require('path'); var webpack = require('webpack'); var HtmlWebpackPlugin = require('html-webpack-plugin'); var CleanWebpackPlugin = require('clean-webpack-plugin'); var ExtractTextPlugin = require("extract-text-webpack-plugin"); var UglifyJsPlugin = webpack.optimize.UglifyJsPlugin; var config = { context: path.resolve(dirname, './src'), entry: { app: './main.js' }, output: { path: path.resolve(dirname, './dist'), filename: '[name].bundle.js' }, devtool: 'cheap-module-eval-source-map', module: { rules: [ { test: /\.jsx?$/, exclude: /node_modules/, loader: 'babel-loader' }, { test: /\.css$/, use: ExtractTextPlugin.extract({ fallback: "style-loader", use: ["css-loader","postcss-loader"] }) }, { test: /\.less$/, use: ["style-loader","css-loader","less-loader"] }, { test: /\.(png|jpg)$/, loader: 'url-loader', options: { limit: 8129 } } ] }, devServer:{ historyApiFallback: true, host:'0.0.0.0', hot: true, //HMR模式 inline: true,//实时刷新 port: 8181 // 修改端口,一般默认是8080 }, resolve: { extensions: ['.js', '.jsx', '.css'], modules: [path.resolve(dirname, './src'), 'node_modules'] }, plugins: [ new webpack.HotModuleReplacementPlugin(), new UglifyJsPlugin({ sourceMap: true }), new webpack.LoaderOptionsPlugin({ minimize: true, debug: true }), new HtmlWebpackPlugin({ template:'./templateIndex.html' }), new ExtractTextPlugin({ filename: '[name].[hash].css', disable: false, allChunks: true, }), new CleanWebpackPlugin(['dist']) ], } module.exports = config; // webpack里面配置的bundle.js需要手动打包才会变化,目录可以由自己指定; // webpack-dev-server自动检测变化自动打包的是开发环境下的bundle.js,打包路径由contentBase决定,两个文件是不一样的.
3.postcss.config.js(Préfixeur automatique)
module.exports = { plugins: { 'autoprefixer': {browsers: 'last 5 version'} } } // 兼容最新的5个浏览器版本
4. Créez un nouveau .babelrc
{ "presets": ['es2015','react','stage-3'] }
5.index.html
<!doctype html> <html lang="en"> <head> <meta charset="utf-8"> <title>React Project</title> </head> <body> <p id="content"></p> <script src="app.bundle.js"></script> </body> </html>
6.package.json
npm install ou Yarn -> module d'installation, npm run build -> package, npm start -> start localhost:8181
{ "name": "reactproject", "version": "1.0.0", "description": "", "main": "index.js", "dependencies": { "jquery": "^3.1.1", "react": "^15.3.2" }, "devDependencies": { "autoprefixer": "^7.1.2", "babel-core": "^6.14.0", "babel-loader": "^6.2.5", "babel-plugin-syntax-async-functions": "^6.13.0", "babel-plugin-transform-async-to-generator": "^6.16.0", "babel-preset-es2015": "^6.14.0", "babel-preset-react": "^6.11.1", "babel-preset-stage-3": "^6.17.0", "bootstrap": "^4.0.0-alpha.2", "clean-webpack-plugin": "^0.1.16", "css-loader": "^0.25.0", "extract-text-webpack-plugin": "^3.0.0-rc.2", "file-loader": "^0.9.0", "html-webpack-plugin": "^2.29.0", "jshint": "^2.9.3", "jshint-loader": "^0.8.3", "json-loader": "^0.5.4", "less": "^2.7.1", "less-loader": "^2.2.3", "moment": "^2.15.1", "node-sass": "^3.10.0", "postcss-loader": "^2.0.6", "react-bootstrap": "^0.30.5", "react-dom": "^15.3.2", "sass-loader": "^4.0.2", "style-loader": "^0.13.1", "url-loader": "^0.5.7", "webpack": "^3.3.0", "webpack-dev-server": "^2.5.1" }, "scripts": { "start": "webpack-dev-server --hot --inline --progress --colors --content-base .", "build": "webpack --progress --colors" }, "keywords": [ "reactcode" ], "author": "xhh", "license": "ISC" }
7.main.js :Fichier d'entrée
import React from 'react' import { render } from 'react-dom'; import $ from 'jquery'; import Demo1 from './js/demo1.js'; // import Demo2 from './js/demo2.js'; render(<Demo1 title="这是提示" />, $('#content')[0]); // render(<Demo2 myName="园中桥" sex="female"/>, $('#content')[0]);
8.templateIndex.html
Le fichier d'index du modèle packagé, le répertoire spécifié par le modèle du plug-in html-webpack-plugin.
<!doctype html> <html lang="en"> <head> <meta charset="utf-8"> <title>Template Index html</title> </head> <body> <p id="content"></p> </body> </html>
9.démo
demo1.js
import React from 'react'; import '../css/demo1.css'; const arr = [ { name:'name1', tel:'12343456783' }, { name:'name2', tel:'12343456784' }, { name:'name3', tel:'12343456785' } ]; export default class Demo1 extends React.Component { constructor(props) { super(props); this.state = { content: true, value: 'inputText' }; } handleClick(){ this.setState({ content: !this.state.content }) // this.refs.myInput.focus(); } handleChange(event) { this.setState({value: event.target.value}); } renderArr() { return arr.map((item,index)=>{ return <li key={index}>name:{item.name},tel:{item.tel}</li> }) } render(){ let btnStyle = { border: '1px solid #ccc', background:'#fff', color: '#a106ce' } return ( /* 注释 */ <p> <button style={btnStyle} className="btn" type="button" onClick={()=>this.handleClick()}>change state</button><br/> <p title={this.props.title} style={{ color:'#A349A4' }}>Hello { this.props.textCont}!</p> <p>{this.state.content ? 'initial value' : 'later value'}</p> { /* 标签里面的注释外面要用花括号 */ } <input type="text" value={this.state.value} ref="myInput" onChange={this.handleChange.bind(this)} /> <h4>{this.state.value}</h4> <DemoChild><p>lalala</p></DemoChild> <ul> { this.renderArr() } </ul> </p> ) } } Demo1.propTypes = { title: React.PropTypes.string.isRequired } Demo1.defaultProps = { textCont: 'React' } class DemoChild extends React.Component { constructor(props) { super(props); } render(){ return ( <p>我是子组件{this.props.children}</p> ) } }
démo1.css
ul { list-style: none; padding: 0; margin:0; display: flex; } .btn:focus { outline: none; }
demo2.js : Composant parent-enfant cycle de vie
import React, { Component, PropTypes } from 'react'; import '../css/demo2.css'; export default class Demo2 extends Component { constructor(props){ super(props); this.state = { stateName: this.props.myName + ',你好', count: 0, } console.log('init-constructor'); } static get defaultProps() { return { myName: "xhh", age: 25 } } doUpdateCount(){ this.setState({ count: this.state.count+1 }) } componentWillMount() { console.log('componentWillMount'); } componentDidMount() { console.log('componentDidMount') } componentWillReceiveProps(nextProps){ console.log('componentWillReceiveProps') } shouldComponentUpdate(nextProps, nextState){ console.log('shouldComponentUpdate'); // return nextProps.id !== this.props.id; if(nextState.count > 10) return false; return true; } componentWillUpdate(nextProps,nextState){ console.log('componentWillUpdate'); } componentDidUpdate(prevProps, prevState){ console.log('componentDidUpdate'); } componentWillUnmount(){ console.log('componentWillUnmount'); } render(){ console.log('render'); return ( <p> <p className="colorStyle">姓名:{this.props.myName}</p> <p>问候:{this.state.stateName}</p> <p>年龄:{this.props.age}</p> <p>性别:{this.props.sex}</p> <p>父元素计数是:{this.state.count}</p> <button onClick={ this.doUpdateCount.bind(this) } style={{ padding: 5,backgroundColor: '#ccc' }}>点我开始计数</button> <SubMyPropType count1={this.state.count} /> </p> ) } } Demo2.propTypes = { myName: PropTypes.string, age: PropTypes.number, sex: PropTypes.string.isRequired } class SubMyPropType extends Component { componentWillMount() { console.log('subMyPropType-componentWillMount'); } componentDidMount() { console.log('subMyPropType-componentDidMount') } componentWillReceiveProps(nextProps){ console.log('subMyPropType-componentWillReceiveProps') } shouldComponentUpdate(nextProps, nextState){ console.log('subMyPropType-shouldComponentUpdate'); if(nextProps.count1 > 5) return false; return true; } componentWillUpdate(nextProps, nextState){ console.log('subMyPropType-componentWillUpdate'); } componentDidUpdate(prevProps, prevState){ console.log('subMyPropType-componentDidUpdate'); } componentWillUnmount(){ console.log('subMyPropType-componentWillUnmount'); } render(){ console.log('subMyPropType-render'); return( <p>子元素计数是:{this.props.count1}</p> ) } }
demo2.css
.colorStyle { color: #0f0; }
Je pense que vous maîtrisez la méthode après avoir lu le cas dans cet article. Pour des informations plus intéressantes, veuillez prêter attention aux autres articles connexes sur le site Web chinois de php !
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Ce qui précède est le contenu détaillé de. pour plus d'informations, suivez d'autres articles connexes sur le site Web de PHP en chinois!