React多页面应用1(webpack开发环境搭建,包括Babel、热更新等)
React多页面应用1(webpack开发环境搭建,包括Babel、热更新等)
本教程总共7篇,每日更新一篇,请关注我们,敬请期待!
1.React多页面应用1(webpack开发环境搭建,包括Babel、热更新等) ----2017.12.28
2.React多页面应用2(处理CSS及图片,引入postCSS及图片处理等)----2017.12.29
3.React多页面应用3(webpack性能提升,包括打包性能、提取公共包等)----2017.12.30
4.React多页面应用4(webpack自动化生成多入口页面)----2017.12.31
5.React多页面应用5(webpack生产环境配置,包括压缩js代码,图片转码等)----2018.01.01
6.React多页面应用6(webpack自动化发布到多个环境,测试环境、预生产环境等)----2018.01.02
7.React多页面应用7(引入eslint代码检查)----2018.01.03
开发环境:Windows 8,node v8.9.1,npm 5.5.1,WebStorm 2017.2.2
- 新建项目 react1
- 初始化工程 npm init -y
- 安装相关依赖 npm i -S react react-dom -S 意思是保存 到 package.json dependencies 字段 npm i -D webpack webpack-dev-server webpack-merge babel-cli babel-preset-env babel-preset-react babel-preset-react-hmre babel-loader -D 意思是保存 到 package.json devDependencies字段
- 建立工程目录 react --app 主目录 --component react组件目录 --index 首页目录 --public 公共目录 主要放 js css img --js 公共js文件 --build webpack 打包输出目录 --config 打包配置目录
--webpack webpack配置目录
--entryBuild webpack 打包入口文件目录
5. 新建页面
首页: Index.jsx
存放在 app->component->index 目录下
import React from 'react';
class Index extends React.Component {
constructor(props) {
super(props);
this.state = { seconds: 0 };
}
tick() {
this.setState(prevState => ({
seconds: prevState.seconds + 1
}));
}
componentDidMount() {
this.interval = setInterval(() => this.tick(), 1000);
}
componentWillUnmount() {
clearInterval(this.interval);
}
render() {
return (
<div>
这是首页
Seconds: {this.state.seconds}
</div>
);
}
}
export default Index;
建立 index.html
存放再 根目录下-> build 下
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta content="telephone=no" name="format-detection">
<title>react1</title>
</head>
<body>
<div id="app"></div>
<script type=text/javascript src=js/index.js></script>
</body>
</html>
商城页: Index.jsx
存放在 app->component->shop目录下
import React from 'react';
class Index extends React.Component {
constructor(props) {
super(props);
this.state = {seconds: 0};
}
tick() {
this.setState(prevState => ({
seconds: prevState.seconds + 1
}));
}
componentDidMount() {
this.interval = setInterval(() => this.tick(), 1000);
}
componentWillUnmount() {
clearInterval(this.interval);
}
render() {
return (
<div>
这是商城
Seconds: {this.state.seconds}
</div>
);
}
}
export default Index;
建立 shop.html
存放再 根目录下-> build 下
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta content="telephone=no" name="format-detection">
<title>react1</title>
</head>
<body>
<div id="app"></div>
<script type=text/javascript src=js/shop.js></script>
</body>
</html>
我们会在 后面课程中讲解 如何自动化生成 html 页面,就不用手动了!
注:如果组件在编译器中文件报错 请设置webstrom
6.建立webpack 入口文件
entryBuild -> index.js
import React from 'react';
import ReactDOM from 'react-dom';
import Index from '../app/component/index/Index.jsx';
ReactDOM.render(<Index/>,document.getElementById('app'));
7.配置webpack
基础配置:
config -> webpack -> webpack.base.conf.js
let config = {
entry: {
'index':'./entryBuild/index.js'
},
resolve: {
extensions: [".js", ".json", ".jsx", ".css",".pcss"],
}
};
module.exports = config;
文件路径配置
config -> webpack -> webpack.file.conf.js
module.exports = {
devDirectory:'build',/*开发目录*/
proDirectory:'pc',/*发布目录*/
resource:'resource',/*静态资源*/
};
开发配置:
config -> webpack -> webpack.dev.conf.js
const webpack = require('webpack');//引入webpack
const opn = require('opn');//打开浏览器
const merge = require('webpack-merge');//webpack配置文件合并
const path = require("path");
const baseWebpackConfig = require("./webpack.base.conf");//基础配置
const webpackFile = require("./webpack.file.conf");//一些路径配置
let config = merge(baseWebpackConfig, {
output: {
path: path.resolve(webpackFile.devDirectory),
filename: 'js/[name].js',
chunkFilename: "js/[name]-[id].js",
publicPath: ''
},
plugins: [
/*设置开发环境*/
new webpack.DefinePlugin({
'process.env': {
NODE_ENV: JSON.stringify('development'),
}
}),
/*设置热更新*/
new webpack.HotModuleReplacementPlugin(),
],
module: {
rules: [
{
test: /\.(js|jsx)$/,
use: [
'babel-loader',
],
include: [
path.resolve(__dirname, "../../app"),
path.resolve(__dirname, "../../entryBuild")
],
exclude: [
path.resolve(__dirname, "../../node_modules")
],
}
]
},
/*设置api转发*/
devServer: {
host: '0.0.0.0',
port: 8080,
hot: true,
inline: true,
contentBase: path.resolve(webpackFile.devDirectory),
historyApiFallback: true,
disableHostCheck: true,
proxy: [
{
context: ['/api/**', '/u/**'],
target: 'http://192.168.12.100:8080/',
secure: false
}
],
/*打开浏览器 并打开本项目网址*/
after() {
opn('http://localhost:' + this.port);
}
}
});
module.exports = config;
8.配置babel
根目录下 .babelrc
{
"presets":["react","env"],
"env":{
"development": {
"presets":["react-hmre"]
}
}
}注:react-hmre 是 babel-preset-react-hmre 用于开启 热替换
10.配置npm命令
再跟目录下 package.json 里配置 scripts 字段
"dev": "webpack-dev-server --devtool eval --progress --colors --profile --config config/webpack/webpack.dev.conf.js",
11.执行 npm run dev
会自动打开浏览器 http://localhost:8080/
随便修改下保存,右侧浏览器会自动热更新
