mishari/demo_id_card_queue_system.html

## demo_id_card_queue_system.html
<html>
<body>
  <script language = "javascript" type = "text/javascript">
    function calculateTime() {
      var prime_number = 1299709;
      var hash = md5('value');
      var i = hash.length;
      var total_number = 0;
      var c = 0;

      var start_time = 1585404000 * 1000; // March 28 2020 21:00 in milliseconds since epoch
      var time_window = 72 * 3600 * 1000; // 72 hours in milliseconds

      var start_date = new Date(start_time)

      while (i--) {
        c = hash.charAt(i);
        if (c >= '0' && c <= '9') {
          total_number = total_number + parseInt(c);
        }
      }

      total_number = total_number * prime_number;

      var offset = total_number % time_window;
      var end_time = new Date(start_time + offset)

      document.writeln("Start Time: <br>");
      document.writeln(start_date.toISOString());
      document.writeln("<br>")
      document.writeln("End Time: <br>");
      document.writeln(end_time.toISOString());

    }
  </script>
  Get md5.min.js from https://github.com/blueimp/JavaScript-MD5/tree/master/js and put in js/ directory
  <form>
    หมายเลขบัตรประชาชน:
    <input type="text" id="national_id">
    <input type="button" onclick="calculateTime()" value="คำนวนเวลาที่จะเข้าคิว">

  </form>
  <script src="https://raw.githubusercontent.com/blueimp/JavaScript-MD5/master/js/md5.min.js"></script>
</body>
</html>
	<html>
	<body>
	<script language = "javascript" type = "text/javascript">
	function calculateTime() {
	var prime_number = 1299709;
	var hash = md5('value');
	var i = hash.length;
	var total_number = 0;
	var c = 0;

	var start_time = 1585404000 * 1000; // March 28 2020 21:00 in milliseconds since epoch
	var time_window = 72 * 3600 * 1000; // 72 hours in milliseconds

	var start_date = new Date(start_time)

	while (i--) {
	c = hash.charAt(i);
	if (c >= '0' && c <= '9') {
	total_number = total_number + parseInt(c);
	}
	}

	total_number = total_number * prime_number;

	var offset = total_number % time_window;
	var end_time = new Date(start_time + offset)

	document.writeln("Start Time: <br>");
	document.writeln(start_date.toISOString());
	document.writeln("<br>")
	document.writeln("End Time: <br>");
	document.writeln(end_time.toISOString());

	}
	</script>
	Get md5.min.js from https://github.com/blueimp/JavaScript-MD5/tree/master/js and put in js/ directory
	<form>
	หมายเลขบัตรประชาชน:
	<input type="text" id="national_id">
	<input type="button" onclick="calculateTime()" value="คำนวนเวลาที่จะเข้าคิว">

	</form>
	<script src="https://raw.githubusercontent.com/blueimp/JavaScript-MD5/master/js/md5.min.js"></script>
	</body>
	</html>