<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<style>
#da{
width:200px;
height:200px;
background-color: pink;
}
#xiao{
width:100px;
height:100px;
background-color: purple;
}
</style>
</head>
<body>
<div id="da">
<div id="xiao"></div>
</div>
<script>
function zuzhi(e){
if(e.stopPropagation){
e.stopPropagation();
}else{
e.cancelBubble = true;
}
}
document.getElementById('da').onclick = function () {
alert('da');
};
document.getElementById('xiao').onclick = function (evt) {
alert('xiao');
var e = window.event||evt;
zuzhi(e);
};
</script>
</body>
</html>