<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style type="text/css">
#content{
width: 600px;
height: 400px;
margin: 50px auto;
position: relative;
}
img{
width: 600px;
height: 400px;
}
#left,#right{
width: 50px;
height: 50px;
font-size:45px ;
font-weight:bolder;
line-height: 400px;
margin: 10px;
opacity: 0.5;
position: absolute;
top: -20px;
}
#right{
right: 0px;
}
#left{
float: left;
}
#content a:hover{
opacity: 1;
color:red;
}
ul{
margin: 0;
padding: 0;
position: absolute;
bottom: 10px;
right: 10px;
}
li{
display: inline-block;
}
#content .item,#content .active{ width: 15px;height: 15px;cursor: pointer;border-radius: 15px;margin: 1px 1px 1px 8px;}
#content .item{background:lightseagreen;}
#content .active,#content li:hover{background: #F60;}
</style>
<script type="text/javascript">
window.onload=function(){
var oDiv=document.getElementById('content');
var oImg=document.getElementsByTagName('img')[0];
var left=document.getElementById("left");
var right=document.getElementById('right');
var oUl=document.getElementsByTagName('ul')[0];
var aLi=document.getElementsByTagName('li');
var imgUrl=['images/1.jpg','images/2.jpg','images/3.jpg','images/4.jpg','images/5.jpg','images/6.jpg','images/7.jpg','images/8.jpg','images/9.jpg','images/10.jpg',];
var num=0;
var timer=null;
for(var i=0;i<imgUrl.length;i++){
oUl.innerHTML+="<li class='item'></li>";
}
function fnTab(){
oImg.src=imgUrl[num];
for(var i=0;i<aLi.length;i++){
aLi[i].className='item';
}
aLi[num].className='item active';
}
fnTab();
for(var j=0;j<aLi.length;j++){
aLi[j].index=j;
aLi.onclick=function(){
num=this.index;
fnTab();
}
}
left.onclick=function (){ //单击左按钮向前切换图片
num--;
clearInterval(timer);
if(num==-1){
num=0;
}
fnTab();
}
right.onclick=function (){ //单击右按钮向前后前后图片
num++;
clearInterval(timer);
if(num==aLi.length){
num=aLi.length-1;
}
fnTab();
}
oUl.onmouseover=function (){
clearInterval(timer);
for(var i=0;i<aLi.length;i++){
aLi[i].className='item';
}
aLi.className='item active';
}
oUl.onmouseout=autoPlay;
oUl.onclick=function (e){
if(e.target.constructor!==HTMLLIElement) return;
num=e.target.index;
fnTab();
}
function autoPlay(){
timer=setInterval(function(){
num++;
num%=imgUrl.length;
fnTab();
},2000);
}
autoPlay();
oImg.onmouseover=function(){
clearInterval(timer);
}
oImg.onmouseout=autoPlay;
}
</script>
</head>
<body>
<div id="content">
<a id="left"><</a>
<img >
<a id="right">></a>
<ul>
</ul>
</div>
<div id="test"></div>
</body>
</html>
