直接上代码演示，最后效果点下面的运行代码：
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
*{
padding: 0;
margin: 0;
}
.tab{
width: 480px;
height: 400px;
border: 5px solid blue;
margin: 50px auto;
position: relative;
float: left;
}
.tab ul li{
list-style: none;
float: left;
width: 160px;
height: 50px;
line-height: 50px;
font-size: 30px;
text-align: center;
}
.tab .con{
width: 460px;
height: 320px;
position: absolute;
left: 10px;
top: 60px;
}
</style>
<script src="../js/jquery-1.11.3.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(function(){
$("li").mouseenter(function(){
t= $(this).index();
$(this).parents('.tab').children(".con").eq(t).show().siblings(".con").hide();
})
})
</script>
</head>
<body>
<div class="tab">
<ul>
<li style="background: olive;">新闻</li>
<li style="background: darkgreen;">图片</li>
<li style="background: darkviolet;">军事</li>
</ul>
<div class="con" style="background: olive; z-index: 2;"></div>
<div class="con" style="background: darkgreen;"></div>
<div class="con" style="background: darkviolet;"></div>
</div>
<div class="tab">
<ul>
<li style="background: olive;">新闻</li>
<li style="background: darkgreen;">图片</li>
<li style="background: darkviolet;">军事</li>
</ul>
<div class="con" style="background: olive; z-index: 2;"></div>
<div class="con" style="background: darkgreen;"></div>
<div class="con" style="background: darkviolet;"></div>
</div>
<div class="tab">
<ul>
<li style="background: olive;">新闻</li>
<li style="background: darkgreen;">图片</li>
<li style="background: darkviolet;">军事</li>
</ul>
<div class="con" style="background: olive; z-index: 2;"></div>
<div class="con" style="background: darkgreen;"></div>
<div class="con" style="background: darkviolet;"></div>
</div>
</body>
</html>
原文链接：https://www.qiquanji.com/post/7602.html
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