使用parcel打包react - HelloWorld开发者社区

创建项目

mkdir par-react  //创建par-react 文件夹
cd par-react    //进入文件夹
yarn init

安装依赖

yarn add react react-dom
yarn add babel-preset-react babel-preset-env
yarn add parcel-bundler

创建.babelrc文件

//.babelrc
{
    "presets": ["env", "react"]
}

创建index.html、index.css、index.js文件

<!--index.html-->

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0,user-scalable=no">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>parcel with react</title>
</head>
<body>
    <div id="root"></div>
    <script src="index.js"></script>
</body>
</html>

//index.css

body,html,p{
    padding: 0;
    margin: 0;
}
body{
    background: seagreen;
    color: #fff;
}

//index.js

import React,{Component} from 'react'
import ReactDOM from 'react-dom'
import 'import './index.css'

class Pcomponent extends Component{
    constructor(){
        super()
        this.state = {
            age:'20',
            height:'180'
        }
    }
    render(){
        return(
            <div>
                <p>年龄：{this.state.age}</p>
                <p>身高：{this.state.height}</p>
            </div>
        )
    }
}

ReactDOM.render(
    <Pcomponent />,
    document.getElementById('root')
)