function timeCountDown(intDiff, callback) { setInterval(function () { var day = 0; var hour = 0; var minute = 0; var second = 0; if (intDiff > 0) { day = Math.floor(intDiff / (60 * 60 * 24)); hour = Math.floor(intDiff / (60 * 60)) - (day * 24); minute = Math.floor(intDiff / 60) - (day * 24 * 60) - (hour * 60); second = Math.floor(intDiff) - (day * 24 * 60 * 60) - (hour * 60 * 60) - (minute * 60); } if (minute <= 9) minute = '0' + minute; if (second <= 9) second = '0' + second; callback && callback(day, hour, minute, second) intDiff--; }, 1000); }