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imgsSwitch.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>带缩略图的图片切换效果</title>
<link rel="stylesheet" type="text/css" href="reset.css">
<style type="text/css">
body{background: #776B6B;;}
.wrap{width: 400px;margin: 50px auto;}
.dis{position: relative;width: 400px;height: 400px;}
.dis img{width: 400px;height: 400px;}
.dis a{position: absolute;width: 30px;height: 30px;background: #f60;color: #fff;font-size: 30px;line-height: 30px;text-align: center;top: 185px;opacity: 0.4;filter: alpha(opacity=40);}
.dis a:hover{opacity: 0.8;filter: alpha(opacity=80);}
#prev{left: 5px;}
#next{right: 5px;}
#list{width: 140px;height: 31px;margin: 10px auto;}
#list li{float: left;margin: 10px 10px;position: relative;}
#list a{width: 8px;height: 8px;background: #ccc;display: block;}
#list .active{background: #f60;}
#list .little{width: 50px;height: 50px;position: absolute;padding: 2px;left: -23px;top: -60px;background: #fff;}
#list .little img{width: 50px;height: 50px;}
</style>
<script type="text/javascript">
window.onload = function(){
var oPrev = document.getElementById('prev');
var oNext = document.getElementById('next');
var oImg = document.getElementById('img1');
var oList = document.getElementById('list');
var aLi = oList.getElementsByTagName('li');
var aLink = oList.getElementsByTagName('a');
var aDiv = oList.getElementsByTagName('div');
var aImg = oList.getElementsByTagName('img');
var arrImg = ['imgs/i1/1.jpg','imgs/i1/2.jpg','imgs/i1/3.jpg','imgs/i1/4.jpg'];
//初始化
var num = 0;
oImg.src = arrImg[num];
aLink[num].className = 'active';
//列表滑动，移开，点击事件
for (var i = 0; i < aLi.length; i++) {
aLi[i].index = i;
aLi[i].onmouseover = function(){
aDiv[this.index].className = 'little';
aImg[this.index].src = arrImg[this.index];
}
aLi[i].onmouseout = function(){
aDiv[this.index].className = '';
aImg[this.index].src = '';
}
aLi[i].onclick = function(){
oImg.src = arrImg[this.index];
num = this.index;
oTab();
}
}
//prev,next点击事件
oPrev.onclick = function(){
if (num>0) {
num--;
}else{
num=arrImg.length-1;
}
oImg.src = arrImg[num];
oTab();
}
oNext.onclick = function(){
if (num<arrImg.length-1) {
num++;
}else{
num=0;
}
oImg.src = arrImg[num];
oTab();
}
//切换方法
function oTab() {
for (var i = 0; i < aLink.length; i++) {
aLink[i].className = '';
}
aLink[num].className = 'active';
}
};
</script>
</head>
<body>
<div class="wrap">
<div class="dis">
<img src="" alt="" id="img1">
<a href="javascript:;" id="prev"><</a>
<a href="javascript:;" id="next">></a>
</div>
<ul id="list">
<li><a href="javascript:;"></a><div><img src=""></div></li>
<li><a href="javascript:;"></a><div><img src=""></div></li>
<li><a href="javascript:;"></a><div><img src=""></div></li>
<li><a href="javascript:;"></a><div><img src=""></div></li>
</ul>
</div>
</body>
</html>