js原生实现移动端手指滑动轮播图效果的示例

更新时间：2020-06-22 03:12:01 作者：startmvc

如下所示：<!DOCTYPEhtml><htmllang="en"><head><metacharset="UTF-8"><metaname="viewport"co

如下所示：


<!DOCTYPE html>
<html lang="en">
<head>
 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
 <title>Document</title>
</head>
<style>
 html{height:100%;}
 body{width: 100%;height:100%;margin:0;overflow: hidden;}
 .wrap{position: relative;overflow: hidden;}
 .box{position: absolute;list-style: none;left:0;top:0;padding:0;margin:0;}
 .box li{float:left;}
 .box{
 position: relative;
 height: 2000px;
 width: 100%;
 top: 0;
 bottom: 0;
 left: 0;
 right: 0;
 background: red;
 }
 .box1{
 height: 2000px;
 }
 .box2{
 background: yellow;
 }
 .box3{
 background: yellowgreen;
 }
 .box4{
 background: orange;
 }
 .box5{
 background: cyan;
 }
</style>
<body>
<div class="wrap">
 <ul class="box">
 <li><div class="box1 box2">11111</div></li>
 <li><div class="box1 box3">2222</div></li>
 <li><div class="box1 box4">3333</div></li>
 <li><div class="box1 box5">4444</div></li>
 </ul>
</div>
<script>
 var aLi = document.querySelectorAll(".box li");
 var box = document.querySelector('.box');
 var wrap = document.querySelector('.wrap');
 var aLiWidth = box.offsetWidth;
 console.log('aLiWidth: ' + aLiWidth)
 wrap.style.height = aLi[0].offsetHeight + 'px';
 // 设置盒子的宽度
 box.style.width = aLi.length*100 + '%';
 for(var i=0;i<aLi.length;i++){
 aLi[i].style.width = 1/aLi.length * 100 + '%';
 };
 // 初始化手指坐标点
 var startPoint = 0;
 var startEle = 0;
 //手指按下
 wrap.addEventListener("touchstart",function(e){
 startPoint = e.changedTouches[0].pageX;
 startEle = box.offsetLeft;
 });
 //手指滑动
 wrap.addEventListener("touchmove",function(e){
 var currPoint = e.changedTouches[0].pageX;
 var disX = currPoint - startPoint;
 var left = startEle + disX;
 box.style.left = left + 'px';
 });
 //当手指抬起的时候，判断图片滚动离左右的距离，当
 wrap.addEventListener("touchend",function(e){
 var left = box.offsetLeft;
// 判断正在滚动的图片距离左右图片的远近，以及是否为最后一张或者第一张
 var currNum = Math.round(-left/aLiWidth);
 currNum = currNum>=(aLi.length-1) ? aLi.length-1 : currNum;
 currNum = currNum<=0 ? 0 : currNum;
 box.style.left = -currNum*wrap.offsetWidth + 'px';
 })

</script>

</body>
</html>

以上这篇js原生实现移动端手指滑动轮播图效果的示例就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持脚本之家。