html部分
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>京东首页右侧固定层</title>
<link href="css/nav.css" rel="stylesheet">
</head>
<body>
<nav id="nav">
<li><span></span><p>就东会员</p></li>
<li><span></span><p>购物车</p></li>
<li><span></span><p>我的关注</p></li>
<li><span></span><p>我的足迹</p></li>
<li><span></span><p>我的消息</p></li>
<li><span></span><p>咨询JIMI</p></li>
</nav>
<script src="js/jquery-1.12.4.js"></script>
<script src="js/nav.js"></script>
</body>
</html>js部分
$(document).ready(function(){
$("#nav li span").mousemove(function(){
$(this).css("background-color","#c81623");
var index=$("#nav li span").index(this);
$("#nav li:eq("+index+") span~p").show();
})
$("#nav li span").mouseout(function(){
$(this).css("background-color","#7a6e6e");
var index=$("#nav li span").index(this);
$("#nav li:eq("+index+") span~p").hide();
})
})css部分
*{margin: 0; padding:0; font-size: 12px;}
ul,ol,li{list-style: none;}
#nav{width: 100px; margin: 0 auto;}
#nav li{height:36px;}
#nav li span{
display: block;
float: right;
width: 35px;
height: 35px;
border-bottom-left-radius: 5px;
border-top-left-radius: 5px;
background: #7a6e6e url("../images/toolbars.png") no-repeat;
}
#nav li:nth-of-type(1) span{background-position: 0px -15px;}
#nav li:nth-of-type(2) span{background-position: 0px -57px;}
#nav li:nth-of-type(3) span{background-position: 1px -106px;}
#nav li:nth-of-type(4) span{background-position: 0px -156px;}
#nav li:nth-of-type(5) span{background-position: 0px -200px;}
#nav li:nth-of-type(6) span{background-position: 2px -265px;}
#nav li p{
height: 35px;
text-align: left;
background: #c81623;
color: #ffffff;
border-bottom-left-radius: 5px;
border-top-left-radius: 5px;
line-height: 35px;
padding-left: 10px;
display: none;
}