webpack---使用插件，常见webpack的plugin，构建vue，react单页面/多页面工程APP必备插件

• html-webpack-plugin

const htmlWebpackPlugin=require('html-webpack-plugin');plugins:[        new htmnlWebpackPlugin({            template:'index.html',            filename:'home.html',            title:'webpack',            data:'aaaaaa'        })    ]//向index.html传入title和data变量值，并且生成home.html；一个plugins数组中科院有多个HtmlWebpackPlugin对象实例

---

• open-browser-webpack-plugin

const OpenBrowserWebpackPlugin=require('open-browser-webpack-plugin');plugins:[    new OpenBrowserWebpackPlugin({url:'http://localhost:8877'})]//启动webpack之后，自动打开浏览器

---

• extract-text-webpack-plugin

const ExtractTextPlugin=require('extract-text-webpack-plugin'); plugins:[     new ExtractTextPlugin('main.css')    ]//插件打包css代码到main.css中

---

• copy-webpack-plugin

const CopyWebpackPlugin=require('copy-webpack-plugin');new CopyWebpackPlugin([{    from: __dirname + '/src/public'}]);//作用：把public 里面的内容全部拷贝到编译目录

---

• webpack-md5-hash

const WebpackMd5Hash=require('webpack-md5-hash');output: {        //...         chunkFilename: "[name].[chunkhash:6].js"},plugins:[    new WebpackMd5Plugin();]/// 它的作用是生成具有独立hash值的css和js文件，即css和js文件hash值解耦。webpack-md5-hash插件对chunk-hash钩子进行捕获并重新计算chunkhash，它的计算方法是只计算模块本身的当前内容（包括同步模块）。

---

• clean-webpack-plugin

const cleanWebpackPlugin=require('clean-webpack-plugin');plugins:[    new cleanWebpackPlugin(['./dist','./build']);]/// build之前清除上次构建生成工程目录dist，build，根据需求传参，可以为数组或字符串

---

• clean-webpack-plugin

const progressbarWebpack = require('progress-bar-webpack-plugin');plugins:[    new progressbarWebpack ();]/// 打包过程，以百分比显示打包进度

---