详解webpack2+React 实例demo_网络技术_宿州市腾雀网络科技有限公司

详解webpack2+React 实例demo

发布时间 - 2026-01-11 03:12:08 点击率：次

1.目录结构

源文件在src目录下，打包后的文件在dist目录下。

2.webpack.config.js

说明：

1.涉及到的插件需要npm install安装；
2.html-webpack-plugin创建服务于 webpack bundle 的 HTML 文件；
3.clean-webpack-plugin清除dist目录重复的文件；
4.extract-text-webpack-plugin分离css文件。

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(Autoprefixer)

module.exports = {
 plugins: {
  'autoprefixer': {browsers: 'last 5 version'}
 }
}

// 兼容最新的5个浏览器版本

4.新建.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>
  <div id="content"></div>

  <script src="app.bundle.js"></script>
 </body>
</html>

6.package.json

npm install 或 yarn -> 安装模块，npm run build -> 打包，npm start -> 启动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:入口文件

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

打包后的模板index文件，插件html-webpack-plugin的template指定的目录。

<!doctype html>
<html lang="en">
 <head>
  <meta charset="utf-8">
  <title>Template Index html</title>
 </head>
 <body>
  <div id="content"></div>
 </body>
</html>

9.demo

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 */
        <div>
          <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>
        </div>
      )
  }
}

Demo1.propTypes = {
  title: React.PropTypes.string.isRequired
}
Demo1.defaultProps = {
  textCont: 'React'
}

class DemoChild extends React.Component {
  constructor(props) {
    super(props);
  }

  render(){
    return (
        <div>我是子组件{this.props.children}</div>
      )
  }
}

demo1.css

ul {
  list-style: none;
  padding: 0;
  margin:0;
  display: flex;
}
.btn:focus {
  outline: none;
}

demo2.js:父子组件生命周期

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 (
    <div>
      <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} />
    </div>
    )
  }
}

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;
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。

# webpack2 # React # 实例 # demo # 详解webpack2+node+react+babel实现热加载(hmr) # 详解react-webpack2-热模块替换[HMR] # 的是 # 这是 # 我是 # 目录下 # 才会 # 要用 # 涉及到 # 服务于 # 大家多多 # 园中 # 你好 # browsers # version # babelrc # plain # xhtml # index # lt # gt # doctype

相关栏目：【网站优化151355 】【网络推广146373 】【网络技术251813 】【 AI营销90571 】

上一篇：《指间山海》夹击队玩法介绍

下一篇：网站服务器搭建指南：高效配置、安全部署与优化方案解析

相关栏目网站优化
网络推广
网络技术
AI营销

最新文章 Sublime怎么一键压缩JS代码 Su sublime如何在搜索中使用正则表达式 Sublime如何设置透明窗口效果 Su mysql如何设计商品表结构_mysql css属性背景图不显示怎么办_通过检查路如何使用Golang实现排序_Golan 农历闰月是怎么回事_为合回归年加一月调整塑造《刺客信条》艾吉奥传奇的编剧离开育碧 1英里等于多少公里 1mile和km的换 css grid布局中行和列是如何定义的 PS批量旋转和翻转图片，快速校正图片方向 C# Swagger UI自定义方法 C OPPO手机九宫格和全键盘怎么切换_OP Go语言如何实现用户登录注册_Golan 1节飞行速度多少公里每小时 1节是多少公纸嫁衣8千子树第五章庙门怎么开启庙门 Laravel 多行数据编辑表单中实现逐明日之后如何提升钓鱼等级明日之后提升钓支付宝怎样查年度账单_支付宝年度账单查看 C# 多线程UI更新Dispatcher

上一篇：《指间山海》夹击队玩法介绍

下一篇：网站服务器搭建指南：高效配置、安全部署与优化方案解析