countdown in javascript

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18 Oct 2020

1<!DOCTYPE HTML>
2<html>
3<head>
4<meta name="viewport" content="width=device-width, initial-scale=1">
5<style>
6p {
7  text-align: center;
8  font-size: 60px;
9  margin-top: 0px;
10}
11</style>
12</head>
13<body>
14
15<p id="demo"></p>
16
17<script>
18// Set the date we're counting down to
19var countDownDate = new Date("Jan 5, 2021 15:37:25").getTime();
20
21// Update the count down every 1 second
22var x = setInterval(function() {
23
24  // Get today's date and time
25  var now = new Date().getTime();
26    
27  // Find the distance between now and the count down date
28  var distance = countDownDate - now;
29    
30  // Time calculations for days, hours, minutes and seconds
31  var days = Math.floor(distance / (1000 * 60 * 60 * 24));
32  var hours = Math.floor((distance % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
33  var minutes = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60));
34  var seconds = Math.floor((distance % (1000 * 60)) / 1000);
35    
36  // Output the result in an element with id="demo"
37  document.getElementById("demo").innerHTML = days + "d " + hours + "h "
38  + minutes + "m " + seconds + "s ";
39    
40  // If the count down is over, write some text 
41  if (distance < 0) {
42    clearInterval(x);
43    document.getElementById("demo").innerHTML = "EXPIRED";
44  }
45}, 1000);
46</script>
47
48</body>
49</html>
50

source

Luigi

30 Aug 2016

1<!DOCTYPE html>
2<html lang="en">
3   <head>
4      <meta charset="UTF-8" />
5      <title>Countdown timer using HTML and JavaScript</title>
6   </head>
7   <body>
8      Registration closes in <span id="timer">05:00<span> minutes!
9
10      <!-- custom js -->
11      <script>
12         window.onload = function () {
13            var minute = 5;
14            var sec = 60;
15            setInterval(function () {
16               document.getElementById("timer").innerHTML =
17                  minute + " : " + sec;
18               sec--;
19               if (sec == 00) {
20                  minute--;
21                  sec = 60;
22                  if (minute == 0) {
23                     minute = 5;
24                  }
25               }
26            }, 1000);
27         };
28      </script>
29   </body>
30</html>

source

Ricardo

28 Jan 2016

1<!-- Display the countdown timer in an element -->
2<p id="demo"></p>
3
4<script>
5// Set the date we're counting down to
6var countDownDate = new Date("Jan 5, 2021 15:37:25").getTime();
7
8// Update the count down every 1 second
9var x = setInterval(function() {
10
11  // Get today's date and time
12  var now = new Date().getTime();
13
14  // Find the distance between now and the count down date
15  var distance = countDownDate - now;
16
17  // Time calculations for days, hours, minutes and seconds
18  var days = Math.floor(distance / (1000 * 60 * 60 * 24));
19  var hours = Math.floor((distance % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
20  var minutes = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60));
21  var seconds = Math.floor((distance % (1000 * 60)) / 1000);
22
23  // Display the result in the element with id="demo"
24  document.getElementById("demo").innerHTML = days + "d " + hours + "h "
25  + minutes + "m " + seconds + "s ";
26
27  // If the count down is finished, write some text
28  if (distance < 0) {
29    clearInterval(x);
30    document.getElementById("demo").innerHTML = "EXPIRED";
31  }
32}, 1000);
33</script>

Camilla

27 Sep 2020

1function startTimer(duration, display) {
2    var timer = duration, minutes, seconds;
3    setInterval(function () {
4        minutes = parseInt(timer / 60, 10);
5        seconds = parseInt(timer % 60, 10);
6
7        minutes = minutes < 10 ? "0" + minutes : minutes;
8        seconds = seconds < 10 ? "0" + seconds : seconds;
9
10        display.textContent = minutes + ":" + seconds;
11
12        if (--timer < 0) {
13            timer = duration;
14        }
15    }, 1000);
16}
17
18window.onload = function () {
19    var fiveMinutes = 60 * 5,
20        display = document.querySelector('#time');
21    startTimer(fiveMinutes, display);
22};

Gerald

05 Jan 2019

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

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