HTML+CSS+JS实现堆叠轮播效果的示例代码

效果：
轮播图在向一个方向移动的同时，要对其每一个图片的大小，位置，透明度以及层级进行改变
原理：
轮播图向左移动时将第一个子元素剪切到末尾，轮播图向右移动时，将末尾子元素剪切到最前面，以此实现无缝轮播效果，再因为li剪切后，下一个li会补上（例如第一个子元素被剪切到最后时，第二个字元素会补上成为第一个子元素），所以li下标不变，以次来修改每一个位置的li的属性（大小，位置，透明度，层级）
HTML代码：

<body><div class="smallBox"><div class="arrowLeft">←</div><div class="smallPicBox">            //用一个div存放一个ul，并对ul里的每一个li进行初始样式设置<ul><li id="li1" style="position: absolute;top:calc(50% - 200px);left: 0px;z-index:1;background-color: aqua;transform: scale(0.5);transition: 0.3s;opacity: 0.5;background-image: url(./images/01.jpg);background-size: cover;"></li><li id="li2" style="position: absolute;top:calc(50% - 200px);left: 150px; z-index:2;background-color: red;transform: scale(0.7); transition: 0.3s;opacity: 0.7;background-image: url(./images/02.jpg);background-size: cover;"></li><li id="li3" style="position: absolute;top:calc(50% - 200px);left: 300px; z-index:3;background-color: blue;transform: scale(0.9); transition: 0.3s;opacity: 0.9;background-image: url(./images/03.jpg);background-size: cover;"></li><li id="li4" style="position: absolute;top:calc(50% - 200px);left: 450px; z-index:4;background-color: green;transform: scale(1); transition: 0.3s;opacity: 1;background-image: url(./images/04.jpg);background-size: cover;"></li><li id="li5" style="position: absolute;top:calc(50% - 200px);left: 600px; z-index:3;background-color: yellow;transform: scale(0.9); transition: 0.3s;opacity: 0.9;background-image: url(./images/05.jpg);background-size: cover;"></li><li id="li6" style="position: absolute;top:calc(50% - 200px);left: 750px; z-index:2;background-color: gray;transform: scale(0.7); transition: 0.3s;opacity: 0.7;background-image: url(./images/06.jpg);background-size: cover;"></li><li id="li7" style="position: absolute;top:calc(50% - 200px);left: 900px; z-index:1;background-color: deeppink;transform: scale(0.5); transition: 0.3s;opacity: 0.5;background-image: url(./images/07.jpg);background-size: cover;"></li></ul></div><div class="arrowRight">→</div></div></div></body>

CSS代码：

<style>*{margin: 0;padding: 0;list-style: none;}.albumBox{width: 1200px;height: 400px;margin: 0 auto;border: 1px solid #000;}.smallBox{height: 400px;line-height: 400px;position: relative;}.smallPicBox{width: 1100px;height: 400px;float: left;position: relative;}.smallPicBox ul{width: 100%;height: 400px;}.smallPicBox li{width: 320px;height: 400px;float: left;border: 1px solid #000;box-sizing: border-box;}.smallBox .current::after{content: "\\25b2";position: absolute;top: -31px;left: 70px;color: red;}.arrowLeft{width: 50px;height: 400px;position: absolute;left: 0;border: 1px solid #000;box-sizing: border-box;background-color: gray;z-index: 10;}.arrowRight{width: 50px;height: 400px;position: absolute;right: 0;border: 1px solid #000;box-sizing: border-box;background-color: gray;z-index: 10;}</style>

JS代码：

<script>var arrowLeft=document.querySelector(".arrowLeft")var arrowRight=document.querySelector(".arrowRight")var ul=document.querySelector(".smallPicBox ul")var li=document.querySelectorAll(".smallPicBox li")var timerId=0arrowLeft.onclick=function(){                      //左箭头点击事件li=document.getElementsByTagName(\'li\')ul.appendChild(li[0])                         //将ul的第0个子元素剪切到末尾，实现无缝轮播posi(li)                                 //修改每一个li的属性}arrowRight.onclick=function(){                    //右箭头点击事件li=document.getElementsByTagName(\'li\')        //重新获取liul.insertBefore(li[6],li[0])                 //将ul的最后一个子元素剪切到最前面，实现无缝轮播posi(li)                                 //修改每一个li的属性}function posi(li){                                //修改li属性函数var n1=0for(var x=0;x<li.length;x++){     //修改位置li[x].style.left=n1+\'px\'n1=n1+150}for(var i=0;i<li.length/2;i++){     //修改层级li[i].style.zIndex=i+1li[li.length-1-i].style.zIndex=i+1}li[3].style.zIndex=\'4\'var n2=0.3for(var j=0;j<li.length/2;j++){        //缩放n2=parseFloat(n2+0.2)li[j].style.transform=\'scale(\'+n2+\')\'li[li.length-1-j].style.transform=\'scale(\'+n2+\')\'}li[3].style.transform=\'scale(1)\'var n3=0.3for(var k=0;k<li.length/2;k++){       //修改透明度n3=parseFloat(n3+0.2)li[k].style.opacity=n3li[li.length-1-k].style.opacity=n3}li[3].style.opacity=\'1\'}//鼠标移入移出temerId=setInterval(function(){arrowLeft.click()}, 1000);arrowLeft.onmouseover=function(){clearInterval(temerId)}arrowLeft.onmouseout=function(){temerId=setInterval(function(){arrowLeft.click()}, 1000);}arrowRight.onmouseover=function(){clearInterval(temerId)}arrowRight.onmouseout=function(){temerId=setInterval(function(){arrowLeft.click()}, 1000);}</script>

注：本例js是直接写在body里的，也可以单独写一个js文件，在引入到html界面

效果图：