countdown 10 seconds javascript 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: javascript countdown 10 seconds

var timeleft = 10;
var downloadTimer = setInterval(function(){
  if(timeleft <= 0){
    clearInterval(downloadTimer);
  }
  document.getElementById("progressBar").value = 10 - timeleft;
  timeleft -= 1;
}, 1000);
<progress value="0" max="10" id="progressBar"></progress>

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Javascript Example

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