HTML+CSS+JS如何实现堆叠轮播效果

这篇“HTML+CSS+JS如何实现堆叠轮播效果”文章,文中示例代码介绍的非常详细,具有一定的参考价值,感兴趣的小伙伴们一定要参考一下,对于“HTML+CSS+JS如何实现堆叠轮播效果”,小编整理了以下知识点,请大家跟着小编的步伐一步一步的慢慢理解,接下来就让我们进入主题吧。

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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">&larr;</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">&rarr;</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=0
        arrowLeft.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li
                ul.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=0
                for(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+1
                    li[li.length-1-i].style.zIndex=i+1
                }
                li[3].style.zIndex='4'
                var n2=0.3
                for(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=0.3
                for(var k=0;k<li.length/2;k++){       //修改透明度
                    n3=parseFloat(n3+0.2)
                    li[k].style.opacity=n3
                    li[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:
 

HTML+CSS+JS如何实现堆叠轮播效果

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