<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>下划线跟随导航</title>
<script type="text/javascript" src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
<style type="text/css">
*{margin: 0;padding: 0;}
ul{
list-style: none;
position: relative;
font-size: 15px;
z-index: 20;
}
li{
float: left;
cursor: pointer;
width: 100px;
height: 30px;
text-align: center;
line-height: 30px;
font-weight: bold;
}
li a{
text-decoration: none;
color: #fff;
}
.menu{
width: 500px;
position: relative;
margin: 20px auto;
height: 32px;
box-shadow: 0 2px 20px #000;
background: #af3434;
border-radius: 3px;
}
</style>
<script type="text/javascript">
$(function(){
$('li').hover(function(){
$x=parseInt($(this).attr('name'))*100
$('.block').stop().animate({left:$x+'px'},300)
},
function(){
$('.block').stop().animate({left:'0px'},300)
}
)
})
</script>
</head>
<body>
<div class="menu">
<ul>
<li name="0"><a href="">首页</a></li>
<li name="1"><a href="">新闻中心</a></li>
<li name="2"><a href="">产品中心</a></li>
<li name="3"><a href="">招商加盟</a></li>
<li name="4"><a href="">联系我们</a></li>
</ul>
<div class="block" style="z-index:10;width: 100px;height: 2px;background: #fff;position: absolute;top: 30px; "></div>
</div>
</body>
</html>
