第一步，新建一个文件夹，然后npm init -yes初始化，会生成一个package.json记录整个项目的依赖包信息
安装webpack cnpm i webpack webpack-dev-server --save-dev
新建以下目录文件，
安装react包 cnpm i react react-dom redux react-redux redux-thunk react-router --save-dev
<!DOCTYPE html>
<html lang="en">
<head>
<Meta charset="UTF-8">
<title>react-weChat</title>
</head>
<body>
<div id="root"></div>
</body>
</html>
import ReactDOM from 'react-dom';
import React,{Component} from 'react';
class App extends Component {
render() {
return <div>Hello React !!!</div>
}
}
ReactDOM.render(
<App/>,document.getElementById("root")
)
接下来开始配置webpack.config.js:webpack四大组成部分：entry,output,module,plugins
const srcDir = __dirname + "/src";
const distDir = __dirname + "/dist";
module.exports = {
entry: [
srcDir + "/index.jsx" //入口
],output: {
path: distDir,//打包后的文件存放地方，会自动新建
filename: 'index.[hash:7].js'//打包后输出的文件名，后面跟7位随机hash值
},devtool: 'source-map',devServer: {
contentBase: './public',//本地服务器所加载的页面的目录
historyApiFallback: true,//不跳转
inline: true,//实时刷新
port: 8090,//端口号
hot: true
},module:{},plugins:[]
再安装解析jsx的loader及插件去解析jsx和es6语法：cnpm i babel-cli babel-loader babel-preset-env babel-preset-react babel-plugin-react-transform react-transform-hmr --save-dev
module: {
rules: [
{
test: /(\.jsx|\.js)$/,use: {
loader: "babel-loader",options: {
presets: [
'env','react'
]
}
},exclude: /node_modules/
},//.babelrc
{
"presets": [
"react","env"
],"env": {
"development": {
"plugins": [
[
"react-transform",{
"transforms": [
{
"transform": "react-transform-hmr","imports": [
"react"
],"locals": [
"module"
]
}
]
}
]
]
}
}
}
cnpm i html-webpack-plugin --save-dev
const HtmlWebpackPlugin = require("html-webpack-plugin");//生成新的html文件
plugins: [
new HtmlWebpackPlugin({//根据模板引入css,js最终生成的html文件
filename: 'index.html',//生成文件存放路径
template: './public/index.html',//html模板路径
}),
cnpm i extract-text-webpack-plugin clean-webpack-plugin --save-dev
const ExtractTextPlugin = require('extract-text-webpack-plugin');//分离css和js
const CleanWebpackPlugin = require('clean-webpack-plugin');//清缓存
new ExtractTextPlugin('style.css'),//独立导出css
new CleanWebpackPlugin('dist/*.*',{
root: __dirname,verbose: true,dry: false
})
cnpm i style-loader css-loader postcss-loader autoprefixer --save-dev
{
test: /\.css$/,use: [
{
loader: "style-loader" //在html中插入<style>标签
},{
loader: "css-loader",//获取引用资源，如@import,url()
options: {
modules: true,//启用css modules
localIdentName: '[name__[local]--[hash:base64:5]]'//指定css的类名格式，避免全局污染
}
},{
loader: "postcss-loader",options: {
plugins:[
require('autoprefixer')({
browsers:['last 5 version']
})
]
}
}
]
},
cnpm i less sass less-loader sass-loader stylus-loader node-sass --save-dev
{
test:/\.less$/,use: [
{
loader: "style-loader"
},options: {
importLoaders:2
}
},//自动加前缀
options: {
plugins:[
require('autoprefixer')({
browsers:['last 5 version']
})
]
}
},{
loader: "less-loader"
}
]
},{
test:/\.scss$/,use:[
{
loader: "style-loader"
},{
loader: "css-loader",options: {
importLoader:1,}
},{
loader: "sass-loader"
},{
loader: "postcss-loader",options: {
plugins:[
require('autoprefixer')({
browsers:['last 5 version']
})
]
}
}
]
},
cnpm i file-loader url-loader --save-dev
{
test: /\.(png|jpg|gif|woff|svg|eot|woff2|tff)$/,use: 'url-loader?limit=8129',//注意后面那个limit的参数，当你图片大小小于这个限制的时候，会自动启用base64编码图片
exclude: /node_modules/
}
再加一些webpack的插件
const webpack = require("webpack");
new webpack.HotModuleReplacementPlugin(),//热加载插件
new webpack.optimize.OccurrenceOrderPlugin(),new webpack.optimize.UglifyJsPlugin(),//压缩
//package.json
"scripts": {
"start": "webpack-dev-server --progress","build": "webpack --config ./webpack.production.config.js --progress && babel dist --out-dir dist"
},
devServer: {
contentBase: './public',//本地服务器所加载的页面的目录
historyApiFallback: true,//不跳转
inline: true,//实时刷新
port: 8090,//端口号
hot: true,proxy:{
'/api1':{
target:'http://10.7.10
107:8001',changeOrigin:true,pathRewrite:{'^/api':''}
},'/api2':{
target:'http://10.7.10.138:4000',pathRewrite:{'^/api2':''}
}
},