<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style>
*{
padding: 0;
margin: 0;
}
ul{
overflow: hidden;
background: skyblue;
}
li{
list-style:none;
float: left;
padding: 10px;
color: #fff;
}
#a1,#a2,#a3{
height: 600px;
background: saddlebrown;
}
#a2{
background: seagreen;
}
#a3{
background: slateblue;
}
</style>
</head>
<body>
<li><a href="#a1">首页</a></li>
<li><a href="#a2">册页</a></li>
<li><a href="#a3">商业</a></li>
</ul>
<section id="a1"></section>
<section id="a2"></section>
<section id="a3"></section>
<script src="http://code.jquery.com/jquery-1.5.js"></script>
<script>
var time = 350;
$.sss = function(element,speed){
$("html,body").animate({
// 关键就在这里
scrollTop:$(element).offset().top
},speed);
};
$(function(){
$("a").click(function(){
var self = $(this);
var el = self.attr("href");
$.sss(el,time);
})
})
</script>
</body>
</html>
