time countdown js code example

Example 1: countdown in javascript

<!DOCTYPE html>
<html lang="en">
   <head>
      <meta charset="UTF-8" />
      <title>Countdown timer using HTML and JavaScript</title>
   </head>
   <body>
      Registration closes in <span id="timer">05:00<span> minutes!

      <!-- custom js -->
      <script>
         window.onload = function () {
            var minute = 5;
            var sec = 60;
            setInterval(function () {
               document.getElementById("timer").innerHTML =
                  minute + " : " + sec;
               sec--;
               if (sec == 00) {
                  minute--;
                  sec = 60;
                  if (minute == 0) {
                     minute = 5;
                  }
               }
            }, 1000);
         };
      </script>
   </body>
</html>

Example 2: html timer

<!DOCTYPE HTML>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
p {
  text-align: center;
  font-size: 60px;
  margin-top: 0px;
}
</style>
</head>
<body>

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

<script>
// Set the date we're counting down to
var countDownDate = new Date("Jan 5, 2021 15:37:25").getTime();

// Update the count down every 1 second
var x = setInterval(function() {

  // Get today's date and time
  var now = new Date().getTime();
    
  // Find the distance between now and the count down date
  var distance = countDownDate - now;
    
  // Time calculations for days, hours, minutes and seconds
  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);
    
  // Output the result in an element with id="demo"
  document.getElementById("demo").innerHTML = days + "d " + hours + "h "
  + minutes + "m " + seconds + "s ";
    
  // If the count down is over, write some text 
  if (distance < 0) {
    clearInterval(x);
    document.getElementById("demo").innerHTML = "EXPIRED";
  }
}, 1000);
</script>

</body>
</html>

Example 3: countdown in js

<body>
    <div>Registration closes in <span id="time">05:00</span> minutes!</div>
</body>

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