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Copy path自动幻灯片效果.html
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自动幻灯片效果.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>untitled</title>
<style>
body,div,ul,li{margin:0;padding:0;}
ul{
list-style-type:none;
}
body{
background:#000;
text-align:center;
font:12px/20px Arial;
}
#box{
position:relative;
width:492px;
height:172px;
background:#fff; /*用背景颜色和图片塑造边框的效果*/
border-radius:5px;
border:8px solid #fff;
margin:10px auto;
}
#box .list{
position:relative;
width:490px;
height:170px;
overflow:hidden;
border:1px solid #ccc;
}
#box .list li{
position:absolute;
top:0;
left:0;
width:490px;
height:170px;
opacity:0;
filter:alpha(opacity=0);
}
#box .list li.current{
opacity:1;
filter:alpha(opacity=100);
}
#box .count{
position:absolute;
right:0;
bottom:5px;
}
#box .count li{
color:#fff;
float:left;
width:20px;
height:20px;
cursor:pointer;
margin-right:5px;
overflow:hidden;
background:#f90;
opacity:0.7;
filter:alpha(opacity=70);
border-radius:20px;
}
#box .count li.current{
color:#fff;
filter:alpha(opacity=100);
font-weight:700;
background:#f60;
}
#tmp{
width:100px;
height:100px;
background:red;
position:absolute;
}
</style>
<script>
window.onload=function()
{
var oBox=document.getElementById("box");
var aUl=document.getElementsByTagName("ul");
var aImg=aUl[0].getElementsByTagName("li");
var aNum=aUl[1].getElementsByTagName("li");
var timer=play=null;
var i=index=0;
//切换按钮
for(var i=0;i<aNum.length;i++)
{
aNum[i].index=i;
aNum[i].onmouseover=function()
{
show(this.index);
}
}
//鼠标划过关闭计时器
oBox.onmouseover=function()
{
clearInterval(play);
}
//鼠标离开启动自动播放
oBox.onmouseout=function()
{
autoPlay();
}
//自动播放函数
function autoPlay()
{
play=setInterval(function(){
index++;
index>=aImg.length && (index=0);
//这句话的意思是if(index>=aImg.length){index=0;}
show(index);
},2000);
}
autoPlay();//随时实现
//图片切换，淡入淡出
function show(a)
{
index=a;
var alpha=0;
for(i=0;i<aNum.length;i++)aNum[i].className="";
aNum[index].className="current";
clearInterval(timer);
for(i=0;i<aImg.length;i++)
{
aImg[i].style.opacity=0;
aImg[i].style.filter="alpha(opacity=0)";
}
timer=setInterval(function(){
alpha+=2;
alpha>100 && (alpha=100);
aImg[index].style.opacity=alpha/100;
aImg[index].style.filter="alpha(opacity="+alpha+")";
alpha==100 && clearInterval(timer);
},20);
}
}
</script>
</head>
<body>
<div id="box">
<ul class="list">
<li class="current"><img src="image2/049.jpg" width="490" height="170"/></li>
<li><img src="image2/053.jpg" width="490px" height="170" /></li>
<li><img src="image2/057.jpg" width="490px" height="170" /></li>
<li><img src="image2/059.jpg" width="490px" height="170" /></li>
<li><img src="image2/052.jpg" width="490px" height="170" /></li>
</ul>
<ul class="count">
<li class="current">1</li>
<li>2</li>
<li>3</li>
<li>4</li>
<li>5</li>
</ul>
</div>
</body>
</html>