JS實現小米輪播圖

原生JS仿小米輪播圖(最新版易懂)，供大家參考，具體內容如下

本次內容主要可實現的效果:

代碼部分:

H5:

<div class='wrap'> <ul class='list'> <li class='item active'><img src='http://www.wxshucaidpc.com/bcjs/img/001.jpg' alt=''></li> <li class='item'><img src='http://www.wxshucaidpc.com/bcjs/img/002.jpg'' alt=''></li> <li class='item'><img src='http://www.wxshucaidpc.com/bcjs/img/001.jpg' alt=''></li> <li class='item'><img src='http://www.wxshucaidpc.com/bcjs/img/002.jpg' alt=''></li> <li class='item'><img src='http://www.wxshucaidpc.com/bcjs/img/001.jpg' alt=''></li> </ul> <!-- 小圓點 --> <ul class='pointList'> <li data-index='0'></li> <li data-index='1'></li> <li class='point'data-index='2'></li> <li class='point'data-index='3'></li> <li class='point'data-index='4'></li> </ul> <button type='button' id='goPre'><</button> <button type='button' id='goNext'>></button></div>

CSS部分:

<style> .wrap { width: 800px; height: 400px; position: relative; } .list { width: 800px; height: 400px; list-style: none; position: relative; padding-left: 0px; } .item { position: absolute; width: 100%; height: 100%; color: white; font-size: 50px; opacity: 0.6; transform: all .8s; } .item img{ width: 800px; height: 400px; } .btn { width: 50px; height: 100px; position: absolute; top: 150px; z-index: 100; } #goPre { left: 0px; } #goNext { right: 0px; } .item.active { opacity: 1; z-index: 10; } .pointList{ padding-left: 0; list-style: none; position: absolute; right: 20px; bottom: 20px; z-index: 1000; } .point{ width: 10px; height: 10px; background-color: rgba(0,0,0,0.4); border-radius: 50%; float: left; margin-right: 16px; border-style: solid; border-width: 2px; border-color: rgba(255,255,255, 0.6); cursor: pointer; } .point.active{ background-color: rgba(255,255,255,0.4); }</style>

JS部分

<script> //獲取節點 var items = document.getElementsByClassName(’item’)//圖片 var goPreBtn = document.getElementById(’goPre’); var goNextBtn = document.getElementById(’goNext’); //獲取點 var points=document.getElementsByClassName(’point’); var time=0;//定時器圖片跳轉參數 var index = 0; //表示第幾張圖片在展示 //可以展示第幾個點 var clearActive=function(){ for(var i=0;i<items.length;i++){items[i].className=’item’;points[i].className=’point’; } } var goIndex=function(){ clearActive(); items[index].className=’item active’; points[index].className=’point active’; } var goNext=function(){ if(index<4){index++; }else{index=0; } goIndex(); } var goPre=function(){ if(index==0){index=4; }else{index--; } goIndex(); } //點擊下一張切換圖片 goNextBtn.addEventListener(’click’ ,function(){ goNext(); time=0; }) //點擊上一張進行切換圖片 goPreBtn.addEventListener(’click’ ,function(){ goPre(); time=0; }) for(var i=0;i<points.length;i++){ points[i].addEventListener(’click’,function(){ var pointIndex=this.getAttribute(’data-index’); index=pointIndex; goIndex(); time=0; }) } //自動輪播定時器 setInterval(function(){ time++; if(time==20){ goNext(); time=0; } },100)</script>

以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持好吧啦網。