<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style>
* {
box-sizing: border-box;
}
#nav {
height: 50px;
}
#nav a {
display: block;
height: 50px;
line-height: 50px;
padding: 0 15px;
font-size: 18px;
text-align: center;
font-family: 'Microsoft YaHei';
float: left;
background- color: #e1e1e1;
cursor: pointer;
}
#nav a.on {
border-bottom: 2px solid #e60012;
}
#contentBox {
280px;
height: 100px;
}
#contentBox .box {
text-align: center;
line-height: 100px;
font-size: 24px;
font-weight: blod;
display: none;
}
#contentBox .box.active {
display: block;
}
</style>
<script type="text/javascript" src="jquery-2.1.4.min.js"></script>
</head>
<body>
<section>
<nav id="nav">
<a class="on">tab1</a>
<a>tab2</a>
<a>tab3</a>
<a>tab4</a>
</nav>
<div id="contentBox">
<div class="box active">内容一</div>
<div class="box">内容二</div>
<div class="box">内容三</div>
<div class="box">内容四</div>
</div>
</section>
</body>
<script type="text/javascript">
$(function() {
$("#nav a").off("click").on("click", function() {
var index = $(this).index();
$(this).addClass("on").siblings().removeClass("on");
$("#contentBox .box").eq(index).addClass("active").siblings().removeClass("active");
});
});
</script>
</html>