<!-- Display the countdown timer in an element -->
<p id="demo"></p>
<script>
// Set the date we're counting down to
var countDownDate = new Date("Mar 16, 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);
// Display the result in the element with id="demo"
document.getElementById("demo").innerHTML = days + "d " + hours + "h "
+ minutes + "m " + seconds + "s ";
// If the count down is finished, write some text
if (distance < 0) {
clearInterval(x);
document.getElementById("demo").innerHTML = "EXPIRED";
}
}, 1000);
</script>const startNumber = 10, stopNumber = 0, skip = 1;
for (let i = startNumber; i >= stopNumber; i -= skip) {
console.log(i);
}
/*
10
9
8
7
6
5
4
3
2
1
0
*//** https://www.youtube.com/watch?v=x7WJEmxNlEs */
//timeInMins repersent time in minutes. eg: timeInMins = 5 --> 5 minutes
function timer(timeInMins) {
const demo = document.getElementById("demo");
console.log("timeInMins: " + timeInMins);
let time = 60 * prepareTime;
setInterval(function () {
let minutes = Math.floor(time / 60);
let seconds = time % 60;
minutes = minutes < 10 ? '0' + minutes : minutes;
seconds = seconds < 10 ? '0' + seconds : seconds;
demo.innerHTML = `${minutes}:${seconds}`;
time--;
}, 1000);
}<!DOCTYPE HTML>
<html>
<body>
<p id="demo"></p>
<button onclick="countdownTimeStart()">Start Timer</button>
<script>
// Set the date we're counting down to
function countdownTimeStart(){
var countDownDate = new Date("Sep 25, 2025 15:00:00").getTime();
// Update the count down every 1 second
var x = setInterval(function() {
// Get todays date and time
var now = new Date().getTime();
// Find the distance between now an the count down date
var distance = countDownDate - now;
// Time calculations for days, hours, minutes and seconds
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 = 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>
Run code snippet// To make a countdown you can use a for loop and console.log(msg);
console.log("We have liftoff in T minus...");
for (let i = 10; i >= 0; i--) {
console.log(i);
}
console.log("We have liftoff!");<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>Countdown timer using HTML and JavaScript</title>
</head>
<body>
<p id="demo"></p>
<script>
// Set the date we're counting down to
var countDownDate = new Date("Jan 5, 2023 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);
// Display the result in the element with id="demo"
document.getElementById("demo").innerHTML = days + "d " + hours + "h "
+ minutes + "m " + seconds + "s ";
// If the count down is finished, write some text
if (distance < 0) {
clearInterval(x);
document.getElementById("demo").innerHTML = "EXPIRED";
}
}, 1000);
</script>
</body>
</html>