JavaScript onclick 事件详解与实现

<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8"/>
<meta name="author" content="https://www.jb51.net/" />
<title>本站</title>
<style type="text/css">
div{
width:100px;
height:100px;
background-color:red;
}
</style>
<script type="text/javascript">
window.onload=function(){
var mydiv=document.getElementById("mydiv");
mydiv.onclick=function(){
mydiv.style.backgroundColor="green";
}
}
</script>
</head>
<body>
<div id="mydiv"></div>
</body>
</html>