https://www.jb51.net/article/126383.htm
// countdown of the number of days with function the countDown (Times) { var Timer = null ; Timer = the setInterval ( function () { var Day = 0 , hour = 0 , minute = 0 , SECOND = 0; // time default value IF (Times > 0 ) { Day = Math.floor (Times / (60 * 60 * 24 )); hour = Math.floor (Times / (60 * 60)) - (Day 24 * ); minute = Math.floor (Times / 60) - (24 * Day 60 *) - (* 60 hour ); SECOND= Math.floor(times) - (day * 24 * 60 * 60) - (hour * 60 * 60) - (minute * 60); } if (day <= 9) day = '0' + day; if (hour <= 9) hour = '0' + hour; if (minute <= 9) minute = '0' + minute; if (second <= 9) second = '0' + second; // console.log(day+"天:"+hour+"小时:"+minute+"分钟:"+second+"秒"); times--; },1000); if(times<=0){ clearInterval(timer); } }
//单纯分钟和秒倒计时 function resetTime(time){ var timer=null; var t=time; var m=0; var s=0; m=Math.floor(t/60%60); m<10&&(m='0'+m); s=Math.floor(t%60); function countDown(){ s--; s<10&&(s='0'+s); if(s.length>=3){ s=59; m="0"+(Number(m)-1); } if(m.length>=3){ m='00'; s='00'; clearInterval(timer); } console.log(m+"分钟"+s+"秒"); } timer=setInterval(countDown,1000); }