<!doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <meta content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title> <style> *{ margin:0; padding:0; list-style: none; } .box{ width: 665px; height: 362px; border: solid; margin: 100px auto; position:relative ; } .left{ width: 50px; height: 50px; border: solid white; border-radius: 50%; position: absolute; line-height: 50px; text-align: center; font-size: 50px; left:0px; top:180px; cursor: pointer; color: white; } .right { width: 50px; height: 50px; border: solid white; border-radius: 50%; position: absolute; line-height: 50px; text-align: center; font-size: 50px; right: 0px; top: 180px; cursor: pointer; color: white; } ul{ width: 400px; height: 50px; margin:307px 188px; position: absolute; left:30px; top:24px; } li{ width: 30px; height: 30px; border: solid 1px white; border-radius: 50%; float: left; cursor: pointer; line-height: 30px; text-align: center; color: white; } img{ display: none; width: 665px; height: 362px; } .act{display: block; } .active{ background: black; } </style> </head> <body> <div> <img src="https://www.jb51.net/img/1.jpg" alt=""> <img src="https://www.jb51.net/img/2.jpg" alt=""> <img src="https://www.jb51.net/img/3.jpg" alt=""> <img src="https://www.jb51.net/img/4.jpg" alt=""> <img src="https://www.jb51.net/img/5.jpg" alt=""> <img src="https://www.jb51.net/img/6.jpg" alt=""> <img src="https://www.jb51.net/img/7.jpg" alt=""> <img src="https://www.jb51.net/img/8.jpg" alt=""> <div> < </div> <div> > </div> <ul> <li>1</li> <li>2</li> <li>3</li> <li>4</li> <li>5</li> <li>6</li> <li>7</li> <li>8</li> </ul> </div> <script> window.onload=function () { var arrLi=document.getElementsByTagName("li"); var arrImg=document.getElementsByTagName("img"); var oLeft=document.getElementById("left"); var oRight=document.getElementById("right"); var oBox=document.getElementById("box"); var num=0; f=setInterval(abc,1000); oBox.onmouseover=function () { clearInterval(f) } oBox.onmouseout=function () { f=setInterval(abc,1000); } for(x=0;x<arrLi.length;x++) { arrLi[x].index=x; arrLi[x].onmouseover=function () { for(j=0;j<arrLi.length;j++){ arrLi[j].className=""; arrImg[j].className=""; } this.className="active"; arrImg[this.index].className="act"; } } oLeft.onclick=function () { num=num-1; if(num<0){ num=arrImg.length-1 } for(j=0;j<arrImg.length;j++){ arrImg[j].className=""; arrLi[j].className=""; }arrImg[num].className="act"; arrLi[num].className="active"; } oRight.onclick=abc function abc() { num=num+1; if(num>arrImg.length-1){ num=0 } for(j=0;j<arrImg.length;j++){ arrImg[j].className=""; arrLi[j].className=""; }arrImg[num].className="act"; arrLi[num].className="active"; } } </script> </body> </html>
本机测试运行效果如下：
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