倒计时-setInterval
function countDown(times){ var timer=null; timer=setInterval(function(){ var day=0,hour=0,minute=0,second=0; if(times > 0){ day = Math.floor(times / (60 * 60 * 24)); hour = Math.floor(times / (60 * 60)) - (day * 24); minute = Math.floor(times / 60) - (day * 24 * 60) - (hour * 60); 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); } } countDown(10000);//传递需要的时间(秒)