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swiper.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>基础图片轮播器</title>
<style type="text/css">
*{
padding:0;
margin:0;
}
#box1{
width:500px;
height:350px;
margin:150px auto;
border:20px solid #bfa;
position:relative;
overflow:hidden;
}
#pic_list{
width:2600px;
list-style:none;
position:absolute;
background-color: #bfa;
/*left:-520px; 一张图片就移动-520px;*/
}
#pic_list li{
float:left;
padding-right:20px;
}
#clicker{
position:absolute;
left:0;
top:335px;
float:left;
list-style:none;
}
#clicker li{
float:left;
margin-right:5px;
}
a{
display:block;
width:15px;
height:15px;
background-color:gray;
opacity:0.5;
}
a:hover{
background-color:black;
}
</style>
<script type="text/javascript" src="tools.js">
</script>
</head>
<body>
<div id="box1">
<ul id="pic_list">
<li class="li"><img src="images/s1.png" alt=""></li>
<li class="li"><img src="images/s2.png" alt=""></li>
<li class="li"><img src="images/s3.png" alt=""></li>
<li class="li"><img src="images/s4.png" alt=""></li>
<li class="li"><img src="images/s5.png" alt=""></li>
<li class="li"><img src="images/s1.png" alt=""></li>
</ul>
<ul id="clicker">
<li><a href="javascript:;"></a></li>
<li><a href="javascript:;"></a></li>
<li><a href="javascript:;"></a></li>
<li><a href="javascript:;"></a></li>
<li><a href="javascript:;"></a></li>
</ul>
</div>
</body>
</html>
<script type="text/javascript">
window.onload = function(){
var ul = document.getElementById("pic_list");
var ul2 = document.getElementById("clicker");
var li = document.getElementsByClassName("li");
var lis = document.getElementsByTagName("a");
ul2.style.left = (500-lis.length*20)/2 +"px";
//自适应悬浮框个数居中
ul.style.width = li.length*520 + "px";
//自动设置ul元素宽度以适应新加入的图片
var timer=setInterval(fun,2000);
//设置图片轮播
var index = 0;
lis[index].style.backgroundColor="black";
function fun(){
index++;
move(ul,30,-520*index,"left",function(){
//图片索引为li.length-1时，自动将索引归零且将left设回0
if(index==li.length-1){
index = 0;
ul.style.left = "0px";
}
setA();
});
for(var i=0;i<lis.length;i++){
lis[i].index = i;//储存索引方便切换图片
lis[i].onclick = function(){
clearInterval(timer);
index=this.index;
move(ul,30,-520*index,"left",function(){timer=setInterval(fun,2000);});
//利用回调函数再次开启定时器
setA();
};
}
}
//完成自动循环功能是 原理是插入六幅图片第六幅跟第一幅一样 在播放至第六幅图片
// 时，瞬间将left归零 视觉上无明显变化 但却将图组回到开头
function setA(){
for(var i=0;i<lis.length;i++){
lis[i].style.backgroundColor="";
lis[index].style.backgroundColor="black";
}
}
};//设置悬浮框颜色 若直接设置灰色会由于优先度问题导致hover效果无法显示
//当设置的是空串的时候 会默认取css修饰
</script>