webpack+react搭建环境
近日自己项目遇到需要用webpack搭建react环境,查了挺多 ,自己总结一下
1.下载安装最新版node.js(https://nodejs.org/en/)
2.主要看自己网络情况,可以选择安装淘宝镜像去搭建环境
npm config set registry http://registry.npm.taobao.org/
3.通过npm/cnpm全局安装webpack, Babel, Webpack-dev-server:
npm install babel webpack webpack-dev-server -g
4.选择项目存放目录,用npm init 初始化 npm 项目
5.在项目中安装 react, react-dom
npm install react react-dom --save
6.在项目中安装 Babel 转换器,这里用到插件 babel-preset-react, babel-preset-latest,latest 即最新的 ES 规范,包括了 Async/Await 这些新特性。
npm install babel-loader babel-core babel-preset-react babel-preset-latest --save
7.创建项目文件,main.js 即项目入口文件,App.js 即 React 组件主文件
文件目录最终为:
8.配置webpack,编辑webpack.config.js
module.exports = { entry: './main.js', // 入口文件路径 output: { path: '/', filename: 'index.js' }, devServer: { inline: true, port: 3333 }, module: { loaders: [ { test: /\.js$/, // babel 转换为兼容性的 js exclude: /node_modules/, loader: 'babel-loader', query: { presets: ['react', 'latest'] } } ] } }
9.写index.html:
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>React Hello World</title> </head> <body> <div id="app"></div> <script src="index.js"></script> </body> </html>
写App.js:
import React from 'react'; class App extends React.Component { render() { return <div>Hello World!</div> } } export default App
写Main.js:
import React from 'react'; import ReactDOM from 'react-dom'; import App from './App'; ReactDOM.render(<App />, document.getElementById('app'));
10.配置 npm scripts, 编辑 package.json,在"scripts"属性处添加一行:
"scripts": { "start": "webpack-dev-server" },
11.基本的框架搭建完毕,npm start 然后打开 http://localhost:3333 试试:
npm start