js,倒计时话不多说，请看实例代码 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><title>前端开发</title></head><body><SCRIPT LANGUAGE="JavaScript">var maxtime;if(window.name=='' || window.name == '-1' || isNaN(window.name)){maxtime = 1*60;}else{maxtime = window.name;}function CountDown(){if(maxtime>=0){hours = Math.floor(maxtime/3600);minutes = Math.floor((maxtime-hours*3600)/60);seconds = Math.floor(maxtime%60);msg = "距离考试结束还有"+hours+"时"+minutes+"分"+seconds+"秒";document.all["timer"].innerHTML = msg;if(maxtime == 5*60) alert('注意，还有5分钟!');--maxtime;window.name = maxtime;}else{clearInterval(timer);alert("考试时间到，结束!");}}timer = setInterval("CountDown()",1000);</SCRIPT><div id="timer" style="color:red"></div></body></html>js控制定时执行,每隔一段时间定时执行 //后台查询执行请求 1min , ajax_wx_payment 为方法名setInterval(ajax_wx_payment,1000*60); js控制延时跳转 //延迟跳转 20minsetTimeout('ys_time_out()', 1000*60*20);以上就是本文的全部内容，希望本文的内容对大家的学习或者工作能带来一定的帮助，同时也希望多多支持wanshiok.com！
js,倒计时
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