How to create count down time in javascript?

script redirect menggunakan jam dan tanggal

langsung aja tanpa basa basi, males panjang2 jarang ada yg liat -____-

ga ngerti ? komen, w bales selow

*by w3scholls

<p id="demo"></p>

<script>
var countDownDate = new Date("Nov 27, 2019 21:22:00").getTime(); // bebas tanggal nya

var x = setInterval(function() {

  var now = new Date().getTime();
    
  var distance = countDownDate - now;
    
  var days = Math.floor(distance / (1000 * 60 * 60 * 24));
  var hours = Math.floor((distance % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
  var minutes = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60));
  var seconds = Math.floor((distance % (1000 * 60)) / 1000);
    
  document.getElementById("demo").innerHTML = days + "d " + hours + "h "
  + minutes + "m " + seconds + "s ";
    
  if (distance < 0) {
    clearInterval(x);
    document.getElementById("demo").innerHTML = "EXPIRED";
    window.location.replace("http://sealikes.com"); // url nya masukin sini
  }
}, 1000);
</script>