<!doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title> <script type="text/javascript" src="js/jquery-1.9.1.min.js"></script> <script type="text/javascript"> $(document).ready(function() { var times = 120 * 100; // 120秒 countTime = setInterval(function() { times = --times < 0 ? 0 : times; var mi = Math.floor(times / 100 /60%60 ).toString(); if (mi.length <= 1) { mi = "0" + mi; } var ms = Math.floor(times / 100 % 60).toString(); if(ms.length <= 1) { ms = "0" + ms; } var hm = Math.floor(times % 100).toString(); if(hm.length <= 1) { hm = "0" + hm; } if(times == 0) { alert("游戏结束"); clearInterval(countTime); } // 获取分钟、毫秒数 $(".a").html(mi); $(".b").html(ms); $(".c").html(hm); }, 10); }); </script> </head> <body> <div class="a"></div> <div class="b"></div> <div class="c"></div> </body> </html>