1.初始化package.json
npm init -y
2.下载react核心包
cnpm i react --save
3.如果是web,下载react-dom包;如果是app下载react-native包
cnpm i react-dom --save
4.下载babel-standalone包,用于转化es6
cnpm i babel-standalone --save
5.页面导入index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src="../node_modules/react/umd/react.development.js"></script>
<script src="../node_modules/react-dom/umd/react-dom.development.js"></script>
<script src="../node_modules/babel-standalone/babel.min.js"></script>
</head>
<body>
<div id='test'>
</div>
<script type="text/babel">
class Test extends React.Component{
render(){
return(
<div>11</div>
)
}
}
ReactDOM.render(<Test/>,document.getElementById('test'))
</script>
</body>
</html>
6.运行即刻