<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>点击轮播图</title> </head> <style> .container { position: relative; width: 600px; height: 400px; margin:100px auto 0 auto; box-shadow: 0 0 5px green; overflow: hidden; } .wrap { position: absolute; width: 4200px; height: 400px; z-index: 1; } .container .wrap img { float: left; width: 600px; height: 400px; } .container .buttons { position: absolute; right: 40%; bottom:20px; z-index: 2; } .container .buttons span { margin-left: 10px; display: inline-block; width: 7px; height: 7px; background-color: #D4D4D4; text-align: center; color:white; cursor: pointer; } .container .buttons span.on{ background-color: #558949; } .container .arrow { position: absolute; top: 35%; color: green; padding:0px 14px; border-radius: 50%; font-size: 50px; z-index: 2; display: none; } </style> <body> <div> <div> <img alt=""> <img src="https://www.jb51.net/article/img/jd_app3.png" alt=""> <img src="https://www.jb51.net/article/img/jd_app4.png" alt=""> <img src="https://www.jb51.net/article/img/jd_app5.png" alt=""> <img src="https://www.jb51.net/article/img/jd_app6.png" alt=""> <img src="https://www.jb51.net/article/img/jd_app7.png" alt=""> </div> <div> <span></span> <span></span> <span></span> <span></span> <span></span> </div> </div> <script> var wrap = document.querySelector(".wrap"); var index = 0; var dots = document.getElementsByTagName("span"); function showCurrentDot () { for(var i = 0, len = dots.length; i < len; i++){ dots[i].className = ""; } dots[index].className = "on"; } index++; if(index > 4){ index = 0; } index--; if(index < 0){ index = 4; } showCurrentDot(); for (var i = 0, len = dots.length; i < len; i++){ (function(i){ dots[i].onclick = function () { var dis = index - i; if(index == 4 && parseInt(wrap.style.left)!==-3000){ dis = dis - 5; } //和使用prev和next相同，在最开始的照片5和最终的照片1在使用时会出现问题，导致符号和位数的出错，做相应地处理即可 if(index == 0 && parseInt(wrap.style.left)!== -600){ dis = 5 + dis; } wrap.style.left = (parseInt(wrap.style.left) + dis * 600)+"px"; index = i; showCurrentDot(); } })(i); } </script> </body> </html>