<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style>
*{margin: 0;padding: 0;}
ul,li{list-style: none;}
img{border: none;}
#scroll{margin: 0px auto;width: 180px;height: 110px;
position: relative;overflow: hidden;}
#scroll ul{width: 720px;height: 110px; position:
absolute;left: 0px;top: 0px;}
#scroll ul li{float: left;}
#scroll li:hover{padding: 2px;}
</style>
<script src="js/hcgd.js"></script>
</head>
<body>
<div id="scroll">
<ul >
<li><img src="img/1.jpg" ></li>
<li><img src="img/2.jpg" ></li>
<li><img src="img/3.jpg" ></li>
<li><img src="img/4.jpg" ></li>
</ul>
</div>
</body>
</html>
window.onload=function()
{
var oDiv=document.getElementById('scroll');
var oUl=oDiv.getElementsByTagName('ul')[0];
var aLi=oUl.getElementsByTagName('li');
var dots = document.querySelectorAll(".dot li");
var imgs = document.querySelectorAll(".scroll>li");
var timer = null;
var ispeed=5;
var Width=178;
oUl.innerHTML+=oUl.innerHTML;
oUl.style.width=aLi[0].offsetWidth*aLi.length+'px';
startMove(); //页面渲染完成自动滚动
oDiv.onmouseover=function(){
clearInterval(timer);
timer=null;
}
oDiv.onmouseout=function(){
startMove(); //指针移除后图片自动重播
}
function startMove(){ //自定义函数让图片轮播
timer=setInterval(function(){
if(oUl.offsetLeft>-oUl.offsetWidth/2){
ispeed=(Width+oUl.offsetLeft)/8;
ispeed=Math.ceil(ispeed);
oUl.style.left=oUl.offsetLeft-ispeed+'px';
}
else{
oUl.style.left='0px';
oUl.offsetLeft='0px';
Width=178;}
if(ispeed<=0)
{ispeed=5;
Width=Width+178;}
},50);
}
}
