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demo2.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="format-detection" content="telephone=no">
<meta name="viewport" content="width=device-width">
<!--navgation&&footer-->
<script src="jquery-2.0.3.min.js" type="text/javascript" charset="utf-8"></script>
<title>轮播demo</title>
</head>
<body>
<div class="banner_box">
<div class="box">
<div class="carousel">
<!-- 轮播图片数量可变 -->
<div class="img">
<img src="img/demo5.jpg"/>
</div>
<div class="img">
<img src="img/demo2.jpg"/>
</div>
<div class="img">
<img src="img/demo1.jpg"/>
</div>
<div class="img">
<img src="img/demo9.jpg"/>
</div>
<div class="img">
<img src="img/demo6.jpg"/>
</div>
<div class="img">
<img src="img/demo7.jpg"/>
</div>
<div class="img">
<img src="img/demo8.jpg"/>
</div>
<div class="img">
<img src="img/demo9.jpg"/>
</div>
</div>
</div>
<button class="left_btn" onclick="left()">left</button>
<button class="right_btn" onclick="right()">right</button>
</div>
</body>
<script>
var imgNub; //轮播图片数量
$(function(){
imgNub = $(".carousel .img").size(); //获取轮播图片数量
for(i=0;i<imgNub;i++){
$(".carousel .img:eq("+i+")").attr("imgId",i);
}
//根据轮播图片数量设定图片位置对应的class
//img3为中央展示位
//img2 && img 4分别为左右
if(imgNub==1){
//img3
for(i=0;i<imgNub;i++){
$(".carousel .img:eq("+i+")").addClass("img3");
}
}
if(imgNub==2){
//img 3、4
for(i=0;i<imgNub;i++){
$(".carousel .img:eq("+i+")").addClass("img"+(i+3));
}
}
if(imgNub==3){
//img 2、3、4
for(i=0;i<imgNub;i++){
$(".carousel .img:eq("+i+")").addClass("img"+(i+2));
}
}
if(imgNub>3&&imgNub<6){
//img 1、2、3、4、(5)
for(i=0;i<imgNub;i++){
$(".carousel .img:eq("+i+")").addClass("img"+(i+1));
}
}
if(imgNub>=6){
for(i=0;i<imgNub;i++){
if(i<5){
// img 1、2、3、4、5
$(".carousel .img:eq("+i+")").addClass("img"+(i+1));
}else{
//img 5
$(".carousel .img:eq("+i+")").addClass("img5");
}
}
}
imgClicked();
});
//右滑动
function right(){
var fy = [];
for(i=0;i<imgNub;i++){
fy[i]=$(".carousel .img[imgId="+i+"]").attr("class");
}
console.log(fy);
for(i=0;i<imgNub;i++){
if(i==0){
//最后一个->第一个
$(".carousel .img[imgId="+i+"]").attr("class",fy[imgNub-1]);
}else{
//其他依次后移
$(".carousel .img[imgId="+i+"]").attr("class",fy[i-1]);
}
}
imgClicked();
}
//左滑动
function left(){
var fy = [];
for(i=0;i<imgNub;i++){
fy[i]=$(".carousel .img[imgId="+i+"]").attr("class");
}
for(i=0;i<imgNub;i++){
if(i==(imgNub-1)){
//第一个->最后一个
$(".carousel .img[imgId="+i+"]").attr("class",fy[0]);
}else{
//其他依次前移
$(".carousel .img[imgId="+i+"]").attr("class",fy[i+1]);
}
}
imgClickFy();
}
//轮播图片左右图片点击翻页
function imgClicked(){
$(".carousel .img").removeAttr("onclick");
$(".carousel .img2").attr("onclick","left()");
$(".carousel .img4").attr("onclick","right()");
}
</script>
<style>
.banner_box .left_btn {
position: relative;
top: -350px;
height: 100px;
width: 80px;
z-index: 10;
}
.banner_box ._left_btn:hover{
cursor:pointer;
}
.banner_box .right_btn {
float: right;
position: relative;
top: -350px;
right: 0;
height: 100px;
width: 80px;
z-index: 10;
}
.banner_box .right_btn:hover{
cursor:pointer;
}
.banner_box {
max-width: 1600px;
min-width: 1200px;
margin: 0 auto;
}
.box {
width: 1200px;
height: 455px;
margin: 0 auto;
}
.carousel{
width: 100%;
height: 100%;
overflow: hidden;
position: relative;
}
.carousel .img{
overflow: hidden;
position: absolute;
transition: width 0.4s,height 0.4s,top 0.4s,left 0.4s,z-index 0.4s;
}
.carousel .img img{
width: calc(100% - 14px);
height: calc(100% - 14px);
margin: 7px;
}
.carousel .img1{
width: 0px;
height: 0px;
top: 30%;
left: -50%;
z-index: 1;
}
.carousel .img2{
width: 500px;
height: 200px;
top: 20%;
left: -20%;
z-index: 2;
}
.carousel .img3{
width: 840px;
height: 340px;
top: 10%;
left: 15%;
z-index: 3;
}
.carousel .img4{
width: 500px;
height: 200px;
top: 20%;
left: 60%;
z-index: 2;
}
.carousel .img5{
width: 0px;
height: 0px;
top: 30%;
left: 110%;
z-index: 1;
}
</style>
</html>