app.js

var ready = function(){
  function getTimeRemaining(endtime){
    var t = Date.parse(endtime) - Date.parse(new Date());
    var seconds = Math.floor( (t/1000) % 60 );
    var minutes = Math.floor( (t/1000/60) % 60 );
    var hours = Math.floor( (t/(1000*60*60)) % 24 );
    var days = Math.floor( t/(1000*60*60*24) );
    return {
      'total': t,
      'days': days,
      'hours': hours,
      'minutes': minutes,
      'seconds': seconds
    };
  }

  function initializeClock(id, endtime){
    var clock = document.getElementById(id);
    var daysSpan = clock.querySelector('.days');
    var hoursSpan = clock.querySelector('.hours');
    var minutesSpan = clock.querySelector('.minutes');
    var secondsSpan = clock.querySelector('.seconds');

    function updateClock(){
      var t = getTimeRemaining(endtime);

      daysSpan.innerHTML = t.days;
      hoursSpan.innerHTML = ('0' + t.hours).slice(-2);
      minutesSpan.innerHTML = ('0' + t.minutes).slice(-2);
      secondsSpan.innerHTML = ('0' + t.seconds).slice(-2);

      if(t.total<=0){
        clearInterval(timeinterval);
      }
    }

    updateClock();
    var timeinterval = setInterval(updateClock,1000);
  }


  var deadline = '11 19 2015';
  initializeClock('clockdiv', deadline);
  console.log(deadline)
}

document.addEventListener('DOMContentLoaded', ready, false);