1function Update() {
2    var id = 'demo'; // Display ID for time left 'demo'
3    var countDownDate = new Date('Dec 3, 2020 15:34:00').getTime();
4    var now = new Date().getTime();
5    var distance = countDownDate - now;
6    if (distance > 0) {
7      var hours = Math.floor((distance % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
8      var minutes = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60));
9      var seconds = Math.floor((distance % (1000 * 60)) / 1000);
10
11      if (distance < 0) {
12        document.write("Time-up");
13      } else {
14        document.getElementById(id).innerHTML = (hours + "h " + minutes + "m " + seconds + "s ");
15      }
16      window.setTimeout('Update()', 1000);
17    } else {
18      document.getElementById(id).innerHTML = ("Form is submitting");
19      $('.username').submit(); // Form to submit but add action="actionpage.php"
20    }
21  }
22  Update();