大家好，又见面了，我是你们的朋友全栈君。
一个好的插件地址：http://www.superslide2.com/demo.html
<!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" />
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title>js</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0,
user-scalable=no"/>
<style>
*{margin: 0;padding: 0;}
#div1{
position: relative;border: 1px solid gray;
width: 760px;
margin: 20px auto;
height: 160px;
overflow: hidden;
}
#div1 ul{
position: absolute;
left: 0;
}
#div1 a{
position: absolute;
z-index: 2;
text-decoration: none;
top: 45%;
display: none;
}
#div1 ul li{
padding: 5px;
list-style: none;
width: 180px;
height: 150px;
float: left;
}
#div1 ul li img{
width: 100%;
height: 100%;
}
</style>
</head>
<body>
<script type="text/javascript">
window.onload = function(){
var oDiv = document.getElementById('div1');
var oUl = oDiv.getElementsByTagName('ul')[0];
var aLi = oUl.getElementsByTagName('li');
var aA = oDiv.getElementsByTagName('a');
var iSpeed = 1;//正左负右
var timer = null;
//计算ul的宽为所有li的宽的和;
oUl.innerHTML += oUl.innerHTML+oUl.innerHTML;
oUl.style.width = aLi[0].offsetWidth*aLi.length+'px';
function Slider(){
if (oUl.offsetLeft<-oUl.offsetWidth/2) {
oUl.style.left = 0;
}else if(oUl.offsetLeft>0){
oUl.style.left =-oUl.offsetWidth/2+'px';
}
oUl.style.left = oUl.offsetLeft-iSpeed+'px';//正负为方向
}
timer =setInterval(Slider,30);
aA[0].onclick = function(){
iSpeed = 1; //控制速度的正负
}
aA[1].onclick = function(){
iSpeed = -1;
}
oDiv.onmouseover = function(){
clearInterval(timer);
}
oDiv.onmouseout = function(){
timer =setInterval(Slider,30);
}
};
</script>
<div id="div1">
<ul>
<li><img src="img/2.jpg"></li>
<li><img src="img/3.jpg"></li>
<li><img src="img/4.jpg"></li>
<li><img src="img/5.jpg"></li>
</ul>
<a href="javascript:;" style="left:10px;"><</a>
<a href="javascript:;" style="right:10px;">></a>
</div>
</body>
</html>
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