原生JS仿小米轮播图(最新版易懂)，供大家参考，具体内容如下
本次内容主要可实现的效果:
- 自动轮播
- 可点击上一张 下一张进行图片的切换
- 点击右下方小圆点进行图片切换
代码部分:
H5:
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<div class="wrap"> <ul class="list"> <li class="item active"><img src="img/001.jpg" alt=""></li> <li class="item"><img src="img/002.jpg"" alt=""></li> <li class="item"><img src="img/001.jpg" alt=""></li> <li class="item"><img src="img/002.jpg" alt=""></li> <li class="item"><img src="img/001.jpg" alt=""></li> </ul> <!-- 小圆点 --> <ul class="pointList"> <li class="point active" data-index="0"></li> <li class="point" 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" class="btn" id="goPre"><</button> <button type="button" class="btn" id="goNext">></button></div> |
CSS部分:
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<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
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<script> //获取节点 var items = document.getElementsByClassName('item')//图片 var goPreBtn = document.getElementById('goPre'); var goNextBtn = document.getElementById('goNext'); //获取点 var points=document.getElementsByClassName('point'); var time=0;//定时器图片跳转参数 var index = 0; //表示第几张图片在展示 //可以展示第几个点 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(); } //点击下一张切换图片 goNextBtn.addEventListener('click' ,function(){ goNext(); time=0; }) //点击上一张进行切换图片 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; }) } //自动轮播定时器 setInterval(function(){ time++; if(time==20){ goNext(); time=0; } },100)</script> |
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://blog.csdn.net/weixin_45846235/article/details/108681458
