<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS:pointer-events</title>
<style type="text/css">
.overlay1 {
200px;
height:30px;
background:green;
position:absolute;
top:5px;
left:5px;
opacity:0.5;
}
.overlay2 {
200px;
height:30px;
background:gold;
position:absolute;
top:40px;
left:5px;
opacity:0.5;
}
.pointer{pointer-events:none;}
</style>
<script type="text/javascript">
window.onload = function(){
document.getElementById('chx').onclick = function(){
document.getElementById('a').className
= "overlay1 " + ((this.checked)? "pointer" : "");
document.getElementById('b').className
= "overlay2 " + ((this.checked)? "pointer" : "");
}
}
</script>
</head>
<body>
<div id="a" class="overlay1"></div>
<div id="b" class="overlay2"></div>
<a href="http://www.baidu.com">baidu</a>
<br/><br/>
<span onclick="alert(3);">span under the div</span>
<p>
<input id="chx" type="checkbox">
<label for="chx">开启穿透点击</label>
</p>
</body>
</html>