微信小程序挣钱方法_js完成移动端轮播图

js实现移动端轮播图       这篇文章主要为大家详细介绍了js实现移动端轮播图效果,文中示例代码介绍的非常详细,具有一定的参考价值,感兴趣的小伙伴们可以参考一下

本文实例为大家分享了js实现移动端轮播图的具体代码,供大家参考,具体内容如下

这是结构

 !DOCTYPE html 
 html lang="en" 
 head 
 meta charset="UTF-8" 
 meta name="viewport" content="width=device-width, user-scalable=no initial-scale=1.0" 
 meta http-equiv="X-UA-Compatible" content="ie=edge" 
 link rel="stylesheet" href="./css/jd_phnoe.css" rel="external nofollow" 
 link rel="stylesheet" href="./css/base.css" rel="external nofollow" 
 title Document /title 
 script src="./js/jd_phnoe.js" /script 
 /head 
 body 
 div 
 div 
 a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" img src="./uploads/l1.jpg" alt="" / /a 
 /li 
 a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" img src="./uploads/l2.jpg" alt="" / /a 
 /li 
 a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" img src="./uploads/l3.jpg" alt="" / /a 
 /li 
 a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" img src="./uploads/l4.jpg" alt="" / /a 
 /li 
 a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" img src="./uploads/l5.jpg" alt="" / /a 
 /li 
 a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" img src="./uploads/l6.jpg" alt="" / /a 
 /li 
 a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" img src="./uploads/l7.jpg" alt="" / /a 
 /li 
 a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" img src="./uploads/l8.jpg" alt="" / /a 
 /li 
 /ul 
 !-- 点标记 -- 
 li /li 
 li /li 
 li /li 
 li /li 
 li /li 
 li /li 
 li /li 
 li /li 
 /ul 
 /div 
 /div 
 /body 
 /html 

这是CSS

/* 搜索部分 */
.jd_layout{
 width: 100%;
 max-width: 640px;
 min-width: 320px;
 height: auto;
 margin: 0px auto;
 background-color: #ccc;
/* 轮播图部分 */
.jd_banner{
 width: 100%;
 overflow: hidden;
 position: relative;
.jd_bannerimg{
 width: 1000%;
 position: relative;
.jd_bannerimg li{
 width: 10%;
 float: left; 
.jd_bannerimg li img{
 width: 100%;
 /*1.设置为块元素
 2.可以将文本的字体大小设置为0
 3.vertical-align:bottom*/
 display: block;
/* 点标记 */
.jd_bannerIndicator{
 position: absolute;
 left: 50%;
 bottom: 5px;
 transform: translateX(-50%);
.jd_bannerIndicator li{
 width: 6px;
 height: 6px;
 float: left;
 border: 1px solid #fff;
 border-radius: 50%;
 /* opacity: 0.7; */
 margin: 0 3px;
 /* cursor: pointer; */
.jd_bannerIndicator li:first-of-type{
 margin-left: 0px;
.jd_bannerIndicator li.active{
 background-color: #fff;

dase

/*公共样式*/
/*1.样式重置*/
html,body,ul,li,img,a,p,div,form,input,h3{
 padding: 0;
 margin: 0;
 /*设置盒模型*/
 box-sizing: border-box;
 /*去除移动端特有的点击高亮效果*/
 -webkit-tap-highlight-color: transparent;
body{
 font-family: "微软雅黑",sans-serif;
 font-size: 13px;
a:hover{
 color: #666;
 text-decoration: none;
 list-style: none;
input{
 /*1.清除文本框获取焦点时默认的边框阴影*/
 outline: none;
 /*2.去除边框*/
 border: none;
 /*3.添加边框*/
 border: 1px solid #ccc;
/*2.添加新的样式*/
.f_left{
 float: left;
.f_right{
 float: right;
.m_left10{
 margin-left: 10px;
.m_right10{
 margin-right: 10px;
.m_top10{
 margin-top: 10px;
.clearfix::before,
.clearfix::after{
 content: "";
 display: block;
 height: 0;
 line-height: 0px;
 clear: both;
 visibility: hidden;

js

window.onload = function () {
 banner();
//轮播图
function banner(){
 /*1.设置修改轮播图的页面结构
 * a.在开始位置添加原始的最后一张图片
 * b.在结束位置添加原始的第一张图片*/
 /*1.1.获取轮播图结构*/
 var banner=document.querySelector(".jd_banner");
 /*1.2.获取图片容器*/
 var imgBox=banner.querySelector("ul:first-of-type");
 //1.3 获取第一张图片
 var first=imgBox.querySelector("li:first-of-type");
 //1.4获取最后一张图
 var last=imgBox.querySelector("li:last-of-type");
 // console.log(first);
 // console.log(last);
 //克隆添加图片
 /*1.5.在首尾插入两张图片 cloneNode:复制一个dom元素*/
 imgBox.appendChild(first.cloneNode(true));
 /*1.6insertBefore(需要插入的dom元素,位置)*/
 imgBox.insertBefore(last.cloneNode(true),imgBox.firstChild);
 //获取对应的样式
 //2.1获取li的位置
 var lis=imgBox.querySelectorAll("li");
 /*2.2 获取li元素的数量*/
 var count=lis.length;
 /*2.3.获取banner的宽度*/
 var bannerWidth=banner.offsetWidth;
 /*2.4 设置图片盒子的宽度*/
 imgBox.style.width=count*bannerWidth+"px";
 /*2.5 设置每一个li(图片)元素的宽度*/
 for(var i=0; i lis.length;i++){
 lis[i].style.width=bannerWidth+"px";
 /*定义图片索引:图片已经有一个宽度的默认偏移*/
 var index=1;
 /*3.设置默认的偏移*/
 imgBox.style.left=-bannerWidth+"px";
 /*4.当屏幕变化的时候,重新计算宽度*/
 window.onresize=function(){
 bannerWidth=banner.offsetWidth+"px";
 imgBox.style.width=count*bannerWidth+"px";
 for(var i = 0; i lis.length;i++){
 lis[i].style.width=bannerWidth+"px";
 imgBox.style.left=-index*bannerWidth+"px";
 //自动轮播
 var timerId;
 var strtime=function(){
 timerId=setInterval(function(){
 index++;
 //添加过度效果
 imgBox.style.transition="left 0.5s ease-in-out"
 //设置偏移量
 imgBox.style.left=(-index*bannerWidth)+"px";
 setTimeout(function(){
 //当走到最后一张时候,我就让他等于最后一张
 if(index==count-1){
 index=1;
 // 清除过度效果
 imgBox.style.transition="none";
 /*偏移到指定的位置*/
 imgBox.style.left=(-index*bannerWidth)+"px";
 },500)
 },1500)
 //自动播放调用
 strtime();
 //实现手动轮播
 var startX,moveX,distanceX;
 /*为图片添加触摸事件--触摸开始*/ 
 var isEnd = true; 
 imgBox.addEventListener("touchstart",function(e){
 //停止定时器
 clearInterval(timerId);
 //console.log(e);
 startX=e.targetTouches[0].clientX; 
 //为图片添加触摸过程,滑动图片
 imgBox.addEventListener("touchmove",function(e){
 if(isEnd==true){
 //console.log(123);
 /*记录手指在滑动过程中的位置*/
 moveX=e.targetTouches[0].clientX;
 /*计算坐标的差异*/
 distanceX=moveX-startX;
 //清除过度效果
 imgBox.style.transition="none";
 //基于之前轮播图偏移的位置
 imgBox.style.left=(-index*bannerWidth + distanceX)+"px";
 /*添加触摸结束事件*/
 imgBox.addEventListener("touchend",function(e){
 //获取滑动距离,判断是否超过100px
 isEnd=false;
 if(Math.abs(distanceX) 50){
 //判断滑动方向
 if(distanceX 0){//上一张
 index--;
 }else{//下一张
 index++;
 //过度效果
 imgBox.style.transition="left 0.5s ease-in-out";
 //偏移位置
 imgBox.style.left=-index*bannerWidth+"px";
 }else if(Math.abs(distanceX) 0){//回弹效果
 //过度效果
 imgBox.style.transition="left 0.5s ease-in-out";
 //偏移位置
 imgBox.style.left=-index*bannerWidth+"px";
 /*将上一次move所产生的数据重置为0*/
 startX=0;
 moveX=0;
 distanceX=0;
 /*webkitTransitionEnd:可以监听当前元素的过渡效果执行完毕,当一个元素的过渡效果执行完毕的时候,会触发这个事件*/
 imgBox.addEventListener("webkitTransitionEnd",function(){
 console.log(index,33333);
 /*如果到了最后一张(count-1),回到索引1*/
 /*如果到了第一张(0),回到索引count-2*/
 if(index==count-1){
 index=1;
 imgBox.style.transition="none";
 imgBox.style.left=-index*bannerWidth+"px";
 }else if(index==0){
 index=count-2;
 imgBox.style.transition="none";
 imgBox.style.left=-index*bannerWidth+"px";
 yuandian(index);
 setTimeout(function () {
 isEnd=true;
 clearInterval(timerId);
 strtime();
 },100)
 // //圆点排他
 var yuandian=function (index) {
 //先找到所有的li 进行遍历移除所有样式,为自己加上样式
 var lis=banner.querySelector("ul:last-of-type").querySelectorAll("li");
 for(var i = 0; i lis.length; i++){
 lis[i].classList.remove("active");
 lis[index-1].classList.add("active");