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index.html
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index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
*{
margin: 0;
padding: 0;
}
li{
list-style: none;
}
#box{
position: relative;
width: 490px;
height: 280px;
margin:50px auto;
}
#box .pic{
overflow: hidden;
position: absolute;
left:0;
top: 0;
width: 100%;
height: 100%;
}
#box .pic ul{
position: absolute;
top: 0;
left: -100%;
width: 1000%;
height: 100%;
}
#box .pic ul.transition{
transition: left 0.3s;
}
#box .pic ul li{
float: left;
width: 10%;
height: 280px;
}
#box .pic ul li img{
display: block;
width: 100%;
height: 100%;
}
#box .tab{
overflow: hidden;
position: absolute;
bottom: 10px;
left: 50%;
width: 80px;
height: 14px;
border-radius: 7px;
background: rgba(0,0,0,0.4);
margin-left: -32px;
}
#box .tab ul{
width: 200%;
height: 100%;
}
#box .tab ul li{
float: left;
width: 10px;
height: 10px;
border-radius: 100%;
background: #fff;
margin: 2px 3px;
cursor: pointer;
transition: background-color 0.2s;
}
#box .tab ul li.on{
background: #0ff;
}
#box .btn{
display: none;
}
#box:hover .btn{
display: block;
}
#box .btn div{
position: absolute;
top: 50%;
width: 20px;
height: 30px;
background: rgba(0,0,0,0.25);
line-height: 30px;
text-align: center;
font-size: 15px;
font-weight: bold;
color: #fff;
cursor: pointer;
}
#box .btn div:hover{
background: rgba(0,0,0,0.6);
}
#box .btn div.left{
left: 0;
border-radius: 0 25px 25px 0;
}
#box .btn div.right{
right: 0;
border-radius: 25px 0 0 25px ;
}
</style>
</head>
<body>
<div id="box">
<!--图片部分-->
<div class="pic">
<ul class="transition">
<li><a href=""><img src="imgs/m55.jpg" alt=""></a></li>
<li><a href=""><img src="imgs/m11.jpg" alt=""></a></li>
<li><a href=""><img src="imgs/m22.jpg" alt=""></a></li>
<li><a href=""><img src="imgs/m33.jpg" alt=""></a></li>
<li><a href=""><img src="imgs/m44.jpg" alt=""></a></li>
<li><a href=""><img src="imgs/m55.jpg" alt=""></a></li>
<li><a href=""><img src="imgs/m11.jpg" alt=""></a></li>
</ul>
</div>
<!--切换卡部分-->
<div class="tab">
<ul>
<li class="on"></li>
<li></li>
<li></li>
<li></li>
<li></li>
</ul>
</div>
<!--左右部分-->
<div class="btn">
<div class="left"> < </div>
<div class="right"> > </div>
</div>
</div>
<script>
var oBox = document.getElementById("box"),
aTabLi = oBox.querySelectorAll(".tab ul li"),
oPicUl = oBox.querySelector(".pic ul"),
aBtn = oBox.querySelectorAll(".btn div"),
length = aTabLi.length,
index = 0,
pW = 490;//获取宽度，增加复用性
//
for(var i=0;i<length;i++){
(function(i){
aTabLi[i].onclick = function () {
index!==i && change(i);
/*if(index!==i){
change(i);
}*/
}
})(i);
}
var clickTime = 0;
//左按钮
aBtn[0].onclick = function(){
if(new Date()-clickTime>350)/*控制按钮点击生效时间*/{
change(index-1);
clickTime = new Date();
}
};
//右按钮
aBtn[1].onclick = function(){
if(new Date()-clickTime>350){
change(index+1);
clickTime = new Date();
}
};
//自动轮播
var timer;
oBox.onmouseenter = function(){
clearInterval(timer);
};
oBox.onmouseleave = auto();
function auto(){
timer = setInterval(function(){
change(index+1);
},2000);
return auto;
}
//所有变化的封装
function change(i){
aTabLi[index].classList.remove("on");
index = i;
if(index>=length){
index = 0;
fn(1);
}
if(index<0){
index = length-1;
fn(length);
}
aTabLi[index].classList.add("on");
oPicUl.style.left = -(i+1)*pW + "px";
}
//提取出来的变化
function fn(x){
setTimeout(function(){
oPicUl.classList.remove("transition");
oPicUl.style.left = "-"+x+"00%";
setTimeout(function(){
oPicUl.classList.add("transition");
},20);
},300)
}
</script>
</body>
</html>