js实现抽奖转盘 - 好文

<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</
title> <style> *{ margin:0; padding:0; list-style: none; } .big{ width: 318px;
height: 318px; margin:100px auto; } .big>div{ width: 100px; height: 100px;
background: pink; float: left; line-height: 100px; text-align: center; border:
solid; } .big>div:nth-of-type(5){ background: yellow; cursor: pointer; } #act{
background: red; } </style> </head> <body> <div class="big"> <div class="small"
id="act">1</div> <div class="small">2</div> <div class="small">3</div> <div
class="small">8</div> <div id="cj">点击抽奖</div> <div class="small">4</div> <div
class="small">7</div> <div class="small">6</div> <div class="small">5</div> </
div> <script> var arrDiv=document.getElementsByClassName("small"); var oCj=
document.getElementById("cj"); var num=0; var shijian=Math.random()*5000+3200;
oCj.onclick=function(){ oTime=setInterval(dianji,200); } function dianji() { num
=num+1; if (num>arrDiv.length-1){ num=0 } for(j=0;j<arrDiv.length;j++){ arrDiv[j
].id=""; } arrDiv[num].id="act"; setTimeout(tingzhi,shijian); function tingzhi
() {clearInterval(oTime) } } </script> </body> </html>

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