javascript countdown with minutes and secons code example

Example 1: 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>

Example 2: countdown in js

function startTimer(duration, display) {
    var timer = duration, minutes, seconds;
    setInterval(function () {
        minutes = parseInt(timer / 60, 10);
        seconds = parseInt(timer % 60, 10);

        minutes = minutes < 10 ? "0" + minutes : minutes;
        seconds = seconds < 10 ? "0" + seconds : seconds;

        display.textContent = minutes + ":" + seconds;

        if (--timer < 0) {
            timer = duration;
        }
    }, 1000);
}

window.onload = function () {
    var fiveMinutes = 60 * 5,
        display = document.querySelector('#time');
    startTimer(fiveMinutes, display);
};

Example 3: javascript countdown timer including days

var countDownDate = new Date("Jul 25, 2021 16:37:52").getTime();

var myfunc = setInterval(function() {
    var now = new Date().getTime();
    var timeleft = countDownDate - now;
        
    var days = Math.floor(timeleft / (1000 * 60 * 60 * 24));
    var hours = Math.floor((timeleft % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
    var minutes = Math.floor((timeleft % (1000 * 60 * 60)) / (1000 * 60));
    var seconds = Math.floor((timeleft % (1000 * 60)) / 1000);
    
    }, 1000)

Example 4: countdown in js

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

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