<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
.hide{
display: none;
}
.menu{
height: 38px;
background-color: #eeeeee;
line-height: 38px;
}
.menu .menu-item{
float: left;
border-right: 1px solid red;
padding: 0 5px;
cursor: pointer;
}
.active{
background-color: blue;
}
.content{
min-height: 100px;
border: 1px solid #eeeeee;
}
</style>
</head>
<body>
<div style="width: 700px;margin: 0 auto">
<div class="menu">
<div class="menu-item active" a="1">菜单一</div>
<div class="menu-item"a="2">菜单二</div>
<div class="menu-item" a="3">菜单三</div>
</div>
<div class="content">
<div b="1">内容一</div>
<div class="hide" b="2">内容二</div>
<div class="hide" b="3">内容三</div>
</div>
</div>
<script src="jquery-1.12.4.js"></script>
<script>
$('.menu-item').click(function () {
$(this).addClass('active').siblings().removeClass('active')
var target = $(this).attr('a')
$('.content').children("[b='"+ target+"']").removeClass('hide').siblings().addClass('hide')
})
</script>
</body>
</html>
jQuery 实现tab标签实例
原文：http://blog.51cto.com/1662659/2125984
