事件委托

事件委托的简单例子

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />
<title></title>
<style type="text/css">
*{margin:0;padding:0;}
#box{width:300px;margin:0 auto;}
#box li{height:30px;line-height:30px;overflow:hidden;width:200px;margin:5px 0 0;}
</style>
</head>
<body>
<ul id="box">
    <li>1</li>
    <li>2</li>
    <li>3</li>
    <li>4</li>
    <li>5</li>
</ul>
<script type="text/javascript">
var oBox = document.getElementById("box");
oBox.onmouseover = function(ev){
    var oEv = ev || event;
    var target = oEv.target || oEv.srcElement;
    if(target.nodeName.toLowerCase()=="li"){
        target.style.background = "red";
    }
}
oBox.onmouseout = function(ev){
    var oEv = ev || event;
    var target = oEv.target || oEv.srcElement;
    if(target.nodeName.toLowerCase()=="li"){
        target.style.background = "";
    }
}
</script>    
</body>
</html>

 

posted @ 2013-06-14 20:30  夜雨_Jason  阅读(283)  评论(0)    收藏  举报