react中事件都需要使用驼峰命名法(第一个单词后的首个字母为大写)
在js里onclick 都为小写;但在jsx里需要onClick onmouseover ---> onMouseOver <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<script src="./bower_components/react/react.js"></script>
<script src="./bower_components/react/react-dom.js"></script>
<script src="./bower_components/babel/browser.js"></script>
<div id="app"></div>
<script type="text/babel">
//如果多标签可以在外面定义
var a = (<div>
<div onClick={show}> hellow react !</div>
<span>dsfsdf</span>
</div>);
function show(){
alert(1)
}
ReactDOM.render(
a,//写入内容元素
document.getElementById('app')//插入那个模块
)
</script>
</body>
</html>
