<html>
<head>
<title> 阻止JavaScript事件冒泡传递（cancelBubble 、stopPropagation）</title>
<meta name="keywords" content="JavaScript,事件冒泡,cancelBubble,stopPropagation" />
<script type="text/javascript">
function doSomething (obj,evt) {
alert(obj.id);
var e=(evt)?evt:window.event; //判断浏览器的类型，在基于ie内核的浏览器中的使用cancelBubble
if (window.event) {
e.cancelBubble=true;
} else {
//e.preventDefault(); //在基于firefox内核的浏览器中支持做法stopPropagation
e.stopPropagation();
}
}
</script>
</head>
<body>
<div id="parent1" onclick="alert(this.id)" style="width:250px;background-color:yellow">
<p>This is parent1 div.</p>
<div id="child1" onclick="alert(this.id)" style="width:200px;background-color:orange">
<p>This is child1.</p>
</div>
<p>This is parent1 div.</p>
</div>
<br />
<div id="parent2" onclick="alert(this.id)" style="width:250px;background-color:cyan;">
<p>This is parent2 div.</p>
<div id="child2" onclick="doSomething(this,event);" style="width:200px;background-color:lightblue;">
<p>This is child2. Will bubble.</p>
</div>
<p>This is parent2 div.</p>
</div>
</body>
</html>
但是单击chile2只会弹出child2却不会弹出 parent2，这便是应用了阻止冒泡事件的特效的效果.