屏幕滚动效果：
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
<style>
ul,ol {
list-style-type: none;
}
* {margin:0;padding:0;}
html,body {
width: 100%;
height: 100%;
}
#ul {
width: 100%;
height: 100%;
}
ul li{
width: 100%;
height: 100%;
}
#ol {
position: fixed;
top:0;
left:50px;
}
#ol li {
width: 50px;
height: 50px;
border: 1px solid #000;
}
</style>
<script src="my.js" type="text/javascript"></script>
<script>
window.onload = function() {
var ulBox = $("ul");
var ulBoxLi = ulBox.children;
var olBox = $("ol");
var olBoxLi = olBox.children;
var bgColor = ["pink","purple","orange","blue","green"];
var leader = 0,target = 0,timer = null;
for(var i= 0; i<ulBoxLi.length; i++)
{
ulBoxLi[i].style.backgroundColor = bgColor[i];
olBoxLi[i].style.backgroundColor = bgColor[i];
olBoxLi[i].index = i; // 记录当前的索引号
olBoxLi[i].onclick = function() {
clearInterval(timer);
target = ulBoxLi[this.index].offsetTop; // 核心语句
timer = setInterval(function() {
leader = leader + (target - leader ) /10;
window.scrollTo(0,leader); // 屏幕滑动
//pic.style.left = leader + 'px';
},30)
}
}
}
</script>
</head>
<body>
<ul id="ul">
<li>首页</li>
<li>关注</li>
<li>动态</li>
<li>风格</li>
<li>作品</li>
</ul>
<ol id="ol">
<li>首页</li>
<li>关注</li>
<li>动态</li>
<li>风格</li>
<li>作品</li>
</ol>
</body>
</html>
效果：
