实现代码：
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>九宫格大转盘</title> <style type="text/css"> /*reset*/ *{ padding:0; margin:0} body{ height: 100%; width: 100%; font-size:12px; color:#333;} ul{ list-style:none;} /*demo*/ #lottery{width:400px;height:400px;margin:20px auto 0; position:relative;} #lottery div{width:100px;height:100px;text-align:centerfont-size:24px;color:#333; float:left;} #lottery .cent{ background:#C33;} #lottery .lottery-unit-0{ background:#CC6;} #lottery .lottery-unit-1{ background:#F99;} #lottery .lottery-unit-2{ background:#CC6;} #lottery .lottery-unit-3{ background:#F99;} #lottery .lottery-unit-4{ background:#CC6;} #lottery .lottery-unit-5{ background:#F99;} #lottery .lottery-unit-6{ background:#CC6;} #lottery .lottery-unit-7{ background:#F99;} #lottery .lottery-unit-8{ background:#CC6;} #lottery .lottery-unit-9{ background:#F99;} #lottery .lottery-unit-10{ background:#CC6;} #lottery .lottery-unit-11{ background:#F99;} #lottery div.select{background:#F0F;} #lottery .start{ position:absolute; left:100px; top:100px; height:200px; width:200px;background:#C33; font-size:30px; text-align:center; cursor:pointer; line-height:200px; color:#fff;} </style> </style> </head> <body> <!--九宫格大转盘--> <div> <div>1</div> <div>2</div> <div>3</div> <div>4</div> <div>12</div> <div></div> <div></div> <div>5</div> <div>11</div> <div></div> <div></div> <div>6</div> <div>10</div> <div>9</div> <div>8</div> <div>7</div> <div>抽奖</div> </div> </body> <script type="text/javascript" src="https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script> <script type="text/javascript"> $(function(){ //九宫格大转盘 var count=3;//可用次数 var i=null;//初始位置， var speed=80;//转动速度 var ok=null;//产生0-11的整数，标记中奖位置 var count=null;//总变化次数 var nowcount=null;//当前的变化位置 var n=5;//圈数 var paly=false; var xq=0; function dong(){//利用递归模拟setinterval的实现 if(nowcount>count){ setTimeout(function(){ paly=false; alert("恭喜你，中了"+eval(ok)+"等奖"); },500); }else{ nowcount+=1; if(i>10){ xq+=1; if(xq==n-1){ speed=300; }; $(".lottery-unit").removeClass("select"); $(".lottery-unit-11").addClass("select"); i=0; }else{ $(".lottery-unit").removeClass("select"); $(".lottery-unit-"+i).addClass("select"); i+=1; }; setTimeout(dong,speed); }; }; $(".start").click(function(){ if(!paly){ if(count==0){ alert("已经没有机会，下次再来！"); }else{ ok=Math.floor((Math.random()*12));//产生0-11的整数，标记中奖位置 count=n*12+ok;//总变化次数 nowcount=0;//当前的变化位置 i=0;//初始位置， paly=true; count-=1; dong(); }; }else{ }; }); }); </script> </html>