(11) 남은 날짜, 시간, 분, 초 계산하기 - 날짜 타이머, 카운팅

< (11) 남은 날짜, 시간, 분, 초 계산하기 - 날짜 타이머, 카운팅 >

// html 
<div class="day">
    <p class="day_10">0</p>
    <p class="day_1">0</p>
</div>
<div class="hour">
    <p class="hour_10">0</p>
    <p class="hour_1">0</p>
</div>
<div class="min">
    <p class="min_10">0</p>
    <p class="min_1">0</p>
</div>




// javascript


      CountDownTimer('04/30/2018 00:00 AM');

      function CountDownTimer(dt){
            var end = new Date(dt);

            var _second = 1000;
            var _minute = _second * 60;
            var _hour = _minute * 60;
            var _day = _hour * 24;
            var timer;

            function showRemaining() {
                var now = new Date();

                var distance = end - now;

                if (distance < 0) {

                    clearInterval(timer);

                    return;
                }
                var days = Math.floor(distance / _day);
                var hours = Math.floor((distance % _day) / _hour);
                var minutes = Math.floor((distance % _hour) / _minute);
                var seconds = Math.floor((distance % _minute) / _second);

                var strDays = days.toString();
                var strHours = hours.toString();
                var strMin = minutes.toString();
                var strSec = seconds.toString();

                if( strDays < 10 ){
                    $('.day_10').text('0');
                    $('.day_1').text(strDays.substring(0, 1));
                }else{
                    $('.day_10').text(strDays.substring(0, 1));
                    $('.day_1').text(strDays.substring(1, 2));
                }

                if( strHours < 10 ){
                    $('.hour_10').text('0');
                    $('.hour_1').text(strHours.substring(0, 1));
                }else{
                    $('.hour_10').text(strHours.substring(0, 1));
                    $('.hour_1').text(strHours.substring(1, 2));
                }

                if( strMin < 10 ){
                    $('.min_10').text('0');
                    $('.min_1').text(strMin.substring(0, 1));
                }else{
                    $('.min_10').text(strMin.substring(0, 1));
                    $('.min_1').text(strMin.substring(1, 2));
                }
            }

            showRemaining();
            timer = setInterval(showRemaining, 1000);
        }