javascript实现可改变滚动方向的无缝滚动实例

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我是靠谱客的博主贤惠大白，最近开发中收集的这篇文章主要介绍javascript实现可改变滚动方向的无缝滚动实例，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

代码：

复制代码代码如下:

 
<!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"> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 
<title>无标题文档</title> 
<style type="text/css"> 
*{ margin:0; padding:0;} 
#imgMove{ height:205px; width:624px; border:#000 1px solid; position:relative; margin:200px auto;overflow:hidden;} 
#imgMove ul{ height:205px;position:absolute; left:0; overflow:hidden;} 
#imgMove li{ list-style:none; float:left; height:205px; width:156px; margin:0;} 
a img,img{ border:none;} 
span{ z-index:999;height:68px; width:68px; display:none;position:absolute; cursor:pointer;} 
#moveLeft{left:0; top:68px; } 
#moveRight{right:-10px; top:68px;} 
</style> 
<script type="text/javascript"> 
window.onload=function(){ 
var oDiv=document.getElementById('imgMove'); 
var oUl=oDiv.getElementsByTagName('ul')[0]; 
var oli=oUl.getElementsByTagName('li'); 
var liSpeed=1; 
var ospan=oDiv.getElementsByTagName('span'); 
var rightmove=document.getElementById('moveRight'); 
var leftmove=document.getElementById('moveLeft'); 
function show(){ 
ospan[0].style.display="block"; 
ospan[1].style.display="block"; 
} 
oUl.onmouseover=function (){ 
show(); 
} 
oUl.onmouseout=function(){ 
ospan[0].style.display="none"; 
ospan[1].style.display="none"; 
} 
ospan[0].onmouseover=function(){ 
liSpeed=1; 
show();/*加这个函数是为了去除向左向右的图片闪动*/ 
} 
ospan[1].onmouseover=function(){ 
liSpeed=-1; 
show();/*加这个函数是为了去除向左向右的图片闪动*/ 
} 

oUl.style.width=oli[0].offsetWidth*oli.length+'px';; 
setInterval(function(){ 
oUl.style.left=oUl.offsetLeft-liSpeed+'px'; 
if(oUl.offsetLeft<-oUl.offsetWidth/2){ 
oUl.style.left=0; 
} 
else if(oUl.offsetLeft>0) 
{ 
oUl.style.left=-oUl.offsetWidth/2+'px'; 
} 
},30) 
} 
</script> 
</head> 

<body> 
<div id="imgMove"> 

<ul> 
<li><a href="#"><img src="images/1.png" /></a></li> 
<li><a href="#"><img src="images/2.png" /></a></li> 
<li><a href="#"><img src="images/3.png" /></a></li> 
<li><a href="#"><img src="images/4.png" /></a></li> 
<li><a href="#"><img src="images/1.png" /></a></li> 
<li><a href="#"><img src="images/2.png" /></a></li> 
<li><a href="#"><img src="images/3.png" /></a></li> 
<li><a href="#"><img src="images/4.png" /></a></li> 
</ul> 
<span id="moveLeft"><img src="images/left.png" /></span> 
<span id="moveRight"><img src="images/right.png" /></div> 
</div> 
</body> 
</html> 