基本使用
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>hello</title>
</head>
<body>
<div id="app">
</div>
<script crossorigin src="https://unpkg.com/react@16/umd/react.production.min.js"></script>
<script crossorigin src="https://unpkg.com/react-dom@16/umd/react-dom.production.min.js"></script>
<script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
<script type="text/babel">
// 虚拟dom
const str = 'hello react'
const vDom = <h1>{str}</h1>
// const vDom = <pppp>hello react</pppp>
// 把虚拟dom转化成真实的dom
ReactDOM.render(vDom,document.getElementById("app"))
</script>
</body>
</html>
创建虚拟dom的两种方式
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>hello</title>
</head>
<body>
<div id="app">
</div>
<script crossorigin src="https://unpkg.com/react@16/umd/react.production.min.js"></script>
<script crossorigin src="https://unpkg.com/react-dom@16/umd/react-dom.production.min.js"></script>
<script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
<script>
// 第一种纯js创建(一般不用)
// 虚拟dom
const str = 'hello react'
const vDom = React.createElement('h1', {
id: 'myId'
}, str)
// const vDom = <pppp>hello react</pppp>
// 把虚拟dom转化成真实的dom
ReactDOM.render(vDom, document.getElementById("app"))
//
</script>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>hello</title>
</head>
<body>
<div id="app">
</div>
<script crossorigin src="https://unpkg.com/react@16/umd/react.production.min.js"></script>
<script crossorigin src="https://unpkg.com/react-dom@16/umd/react-dom.production.min.js"></script>
<script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
<script type="text/babel">
// 第一种纯js创建(一般不用)
// [] ul li 用forEach实现
var names = ['张飞','关羽','赵云']
const ul = <ul>
{
names && names.map((name,index)=>
<li key={index}>
{name}
</li>
)
}
</ul>
ReactDOM.render(ul,document.getElementById("app"))
//
</script>
</body>
</html>
知识点扩展：
React pwa的配置
在到webpack配置文件中添加插件
const WorkboxWebpackPlugin = require('workbox-webpack-plugin')
plugins: [
new MiniCssExtractPlugin({
filename: '[name].css'
}),
new WorkboxWebpackPlugin.GenerateSW({
clientsClaim:true,
skipWaiting:true
})
],
