<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
<title>Document</title>
</head>
<style>
.btn-change{
width: 120px;
height: 40px;
border-radius: 20px;
border: 1px solid #dedede;
font-size: 1.3em;
margin: 0 auto;
position: relative;
overflow: hidden;
}
.btn-dot{
height: 40px;
width: 40px;
background-color: #dedede;
border-radius: 20px;
position: absolute;
z-index: 99;
} .btn-left{
background-color:#74B700;
position: absolute;
width: 100px;
height: 40px;
line-height: 40px;
left: -80px;
color: #fff;
text-align: left;
padding-left: 40px;
} .btn-move{
position: absolute;
left:0;
-webkit-transition: all .3s;-moz-transition: all .3s;transition: all .3s;
} .switch.btn-move{
left:80px;
}
.btn-right{
background-color: #ebebeb;
position: absolute;
width: 100px;
height: 40px;
line-height: 40px;
text-align: left;
padding-left: 20px;
left: 20px;
color: #333;
} </style>
<body>
<div class="btn-change">
<div class="btn-move">
<div class="btn-left">关注</div>
<div class="btn-dot"></div>
<div class="btn-right">未关注</div>
</div>
</div>
</body>
</html>
<script src="jquery-1.10.2.js"></script>
<script>
$(function(){
$(".btn-move").click(function(){
$(this).toggleClass("switch");
})
})
</script>
效果图：