<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
<style type="text/css">
*{
margin: 0;
padding: 0;
font-size: 32px;
}
ul,li{
list-style: none;
}
#tab{
margin: 10px auto ;
500px;
}
#tab ul{
position: relative;
top: 1px;
z-index: 100;
}
#tab ul li{
float: left;
margin-right: 5px;
margin-left: 5px;
100px;
height: 30px;
30%;
line-height: 30px;
text-align: center;
border: 1px solid #dddddd;
cursor: pointer;
}
#tab ul li.select{
border-bottom: none;
background:red;
}
#tab div{
display: none;
clear: both;
height: 100px;
line-height: 100px;
text-align: center;
border:1px solid #dddddd;
}
#tab div.select{
display: block;
}
</style>
</head>
<body>
<div id="tab">
<ul>
<li class="select">视频</li>
<li>综艺</li>
<li>秒拍</li>
</ul>
<div class="select">视频内容</div>
<div>综艺内容</div>
<div>秒拍内容</div>
</div>
<script type="text/javascript">
var oTab =document.getElementById("tab");
var oLis = oTab.getElementsByTagName("li");
var oDivs = oTab.getElementsByTagName("div");
for(var i = 0;i<oLis.length;i++){
var oLi =oLis[i];
oLi.index = i;
oLi.onmouseover = function(){
for(var j = 0;j<oLis.length;j++){
oLis[j].className="";
oDivs[j].className="";
}
this.className="select";
oDivs[this.index].className="select";
}
oLi.onmouseout = function(){
for(var j = 0;j<oLis.length;j++){
console.log("进来了111 "+i);
oLis[j].className="";
oDivs[j].className="";
}
oLis[0].className="select";
oDivs[0].className="select";
}
}
</script>
</body>
</html>