React Webpack 小书

安装 React JS

npm install react --save

There is really nothing more to it. You can now start using React JS in your code.

没什么好讲的,接下来就可以在你的代码中使用 React JS 了。

在代码中使用 ReactJS


import React from 'react';

export default class Hello extends React.Component {
  render() {
    return <h1>Hello world</h1>;


import React from 'react';
import Hello from './component.jsx';


function main() {
    React.render(<Hello />, document.getElementById('app'));


<!DOCTYPE html>
    <meta charset="UTF-8"/>
    <div id="app"></div>

    <script src="http://localhost:8080/webpack-dev-server.js"></script>
    <script src="bundle.js"></script>

转换 JSX

To use the JSX syntax you will need webpack to transform your JavaScript. This is the job of a loader. We'll use Babel as it's nice and has plenty of features.

为了能够使用 JSX 语法,你需要用 Webpack 来转码你的 JavaScript,这是加载器的工作,我们可以使用一个很好用也有很多功能的 Babel

npm install babel-loader --save-dev

Now we have to configure webpack to use this loader.

现在我们需要去配置 Webpack 来使用加载器。


var path = require('path');
var config = {
  entry: path.resolve(__dirname, 'app/main.js'),
  output: {
    path: path.resolve(__dirname, 'build'),
    filename: 'bundle.js'
  module: {
    loaders: [{
      test: /\.jsx?$/, // 用正则来匹配文件路径,这段意思是匹配 js 或者 jsx
      loader: 'babel' // 加载模块 "babel" 是 "babel-loader" 的缩写

module.exports = config;

Webpack will test each path required in your code. In this project we are using ES6 module loader syntax, which means that the require path of import MyComponent from './Component.jsx'; is './Component.jsx'.

Webpack 会在你的项目中测试所有路径,如果我们项目中使用 ES6 模块加载器语法,比如 import MyComponent from './Component.jsx'; 是会去匹配 './Component.jsx'

Run npm run dev in the console and refresh the page to see something.

在命令行中运行 npm run dev,然后刷新页面就可以看到修改。