<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> <style type="text/css"> *{ margin: 0; padding: 0; } .wrap{ width: 510px; margin: 0 auto; overflow: hidden; position: relative; } .caktye{ width: 9999px; overflow: hidden; position: relative; left: 0; } .main{ text-align: center; position: absolute; bottom: 10px; left: 35%; } .main button{ width: 25px; height: 25px; text-align: center; line-height: 25px; border-radius: 25px; display: inline-block; border: none; } .active{ background-color: yellow; } .caktye a{ float: left; } .caktye img { display: block; width:510px; } #prevBtn{ display: block; position: absolute; left: 5px; bottom: 45%; width: 15px; height: 15px; border-left: 5px solid ; border-top: 5px solid ; border-color: rgba(255,255,255,0.5); -webkit-transform: rotate(-45deg); transform: rotate(-45deg); } #nextBtn{ display: block; position: absolute; right: 5px; bottom: 45%; width: 15px; height: 15px; border-right: 5px solid; border-top: 5px solid; -webkit-transform: rotate(45deg); transform: rotate(45deg); border-color: rgba(255,255,255,0.5); } </style> </head> <body> <div class="wrap"> <div class="caktye" id="inner"> <a href="###"><img src="img/1.jpg"></a> <a href="###"><img src="img/2.jpg"></a> <a href="###"><img src="img/3.jpg"></a> <a href="###"><img src="img/4.jpg"></a> <a href="###"><img src="img/5.jpg"></a> </div> <div class="main"> <button class="active">1</button> <button>2</button> <button>3</button> <button>4</button> <button>5</button> </div> <div> <a href="###" id="prevBtn"></a> <a href="###" id="nextBtn"></a> </div> </div> <script type="text/javascript"> var innerList = document.getElementById("inner"); var btnList = document.getElementsByTagName("button"); var perWidth = inner.children[0].offsetWidth; var prevBtn = document.getElementById("prevBtn"); var nextBtn = document.getElementById("nextBtn"); function tab(){ inner.style.left= -perWidth * index + "px" for(var j=0;j<btnList.length; j++){ btnList[j].className=""; } btnList[index].className="active"; } function next() { index++; if(index > btnList.length - 1) { index = 0; } tab(); } function prev() { index--; if(index < 0) { index = btnList.length - 1; } tab(); } for(var i=0;i<btnList.length;i++){ btnList[i].index=i; btnList[i].onclick =function(){ index=this.index; tab(); } } var index=0; function xunhuan(){ index++; if(index>btnList.length -1){ index=0; } tab(); } var timer =setInterval(xunhuan,2000); inner.onmouseover =function(){ clearInterval(timer); } inner.onmouseout =function(){ timer = setInterval(xunhuan,2000); } //下一张 nextBtn.onclick = function() { clearInterval(timer); next(); timer = setInterval(next,2000); } //上一张 prevBtn.onclick = function() { clearInterval(timer); prev(); timer = setInterval(next,2000); } </script> </body> </html>