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<!doctype html> <html> <head> <meta charset="UTF-8"> <title> 大富翁 </title> <style> ul {list-style: none; } .lottery { position: relative; width: 184px; height: 184px; line-height: 58px; text-align: center; overflow: hidden; margin: 0 auto; } .lottery li, .lottery .btn { position: absolute; width: 60px; height: 60px; border: 1px #ccc solid; z-index: 1; } .lottery .item-1 { top: 0; left: 0; } .lottery .item-2 { top: 0; left: 61px; } .lottery .item-3 { top: 0; left: 122px; } .lottery .item-4 { top: 61px; left: 122px; } .lottery .item-5 { top: 122px; left: 122px; } .lottery .item-6 { top: 122px; left: 61px; } .lottery .item-7 { top: 122px; left: 0; } .lottery .item-8 { top: 61px; left: 0; } .lottery .active { border-color: red; z-index: 2; } .lottery .btn { width: 62px; height: 62px; top: 61px; left: 61px; background-color: transparent; cursor: pointer; } </style> </head> <body> <div class="lottery"> <ul class="list"> <li class="item-1 active">1</li> <li class="item-2">2</li> <li class="item-3">3</li> <li class="item-4">4</li> <li class="item-5">5</li> <li class="item-6">6</li> <li class="item-7">7</li> <li class="item-8">8</li> </ul> <button class="btn">抽奖</button> </div> <script src="http://lib.sinaapp.com/js/jquery/1.9.1/jquery-1.9.1.min.js"></script> <script> // 假设iEnd是请求获得的奖品结果 var iEnd = -1; $(‘.btn‘).on(‘click‘, function(){ var $this = $(this); // 这个setTimeout是假设的请求 setTimeout(function(){ iEnd = Math.floor(Math.random() * 8); console.log(iEnd); }, 3000); // 禁用 $this.attr(‘disabled‘, ‘disabled‘); draw($(‘.lottery‘), function(){ // 第一个奖品是0哦~ alert(‘您中到了奖品号下标是：‘+ iEnd + ‘，奖品数字是：‘+ (iEnd + 1)); // 恢复按钮 $this.removeAttr(‘disabled‘); }); }); // 开始转动 function draw(oMain, fn){ var timer = null, iNow = oMain.find(‘.active‘).index(), len = oMain.find(‘li‘).length, circle = 5, // 至少要转几圈 iSpeed = 300, count = 0, // 转了多少次 iLast = len; // 最后一次转圈圈 (function run(){ // 前3个加速 if(count > 2){ iSpeed = 100; } // 后3个减速 if(iLast < 2){ iSpeed = 300; } iNow++; count++; if(iNow >= len){ iNow = 0; circle--; } oMain.find(‘li‘).removeClass(‘active‘).eq(iNow).addClass(‘active‘); timer = setTimeout(run, iSpeed); // 得到结果 if(iEnd !== -1 && circle <= 0 && iNow == iEnd){ // 为了最后一圈减速，再跑一圈 iLast--; if(iLast == 0){ clearTimeout(timer); fn(); } } })(); } </script> </body> </html>
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原文地址：http://www.cnblogs.com/jununx/p/4472886.html
