I have a countdown that ends at a specific time and date.
Is it possible to set a starting date for the countdown?
Start: June 14, 2018 15:00:00
End: June 17, 2018 23:59:59
// Set the date we're counting down to
var countDownDate = new Date("June 17, 2018 23:59:59").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 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("countdown").innerHTML = "TEXT Countdown" + days + " days, " + hours + " h, "
+ minutes + " min & " + seconds + " sec";
// If the count down is over, write some text
if (distance < 0) {
clearInterval(x);
document.getElementById("countdown").innerHTML = "TEXT after countdown";
}
}, 1000);
<div id="countdown"></div>
Just delay the call to setInterval until the time you want. Your best bet, since timers get throttled on inactive tabs, is to check periodically and then kick things off when the time arrives:
var waitingTimer = setInterval(function() {
if (Date.now() < Date.parse("2018-06-14T15:00:00")) {
return;
}
clearInterval(waitingTimer);
// ...start the countdown
}, 1000);
You might want to express the time in UTC, since unfortunately the spec on what those strings mean without a timezone indicator changed (twice), whereas if you put the time in UTC and add a Z to the string, it's reliable.
Related
I have the following javascript code:
function t5am() {
// Set the date we're counting down to
// Year, Month ( 0 for January ), Day, Hour, Minute, Second, , Milliseconds
//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
//:::::::::::: ::::::::::::
//:::::::::::: 5:00 AM ::::::::::::
//:::::::::::: ::::::::::::
//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
// (AAAA,MM,DD,HH,mm,S));
var countDownDate = new Date(Date.UTC(2020,05,29,12,00,00));
// 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
// GMT/UTC Adjustment at the end of the function. 0 = GMT/UTC+0; 1 = GMT/UTC+1.
var distance = countDownDate - now - (3600000 * 1);
// 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"
for (const ele of document.getElementsByClassName("t5am")){
ele.innerHTML = (days + "<span>d</span> " + hours + "<span>h</span> "
+ minutes + "<span>m</span> " + seconds + "<span>s</span><br />")
}
// If the count down is over, write some text
if (distance < 0) {
for (const ele of document.getElementsByClassName("t5am")) {
ele.innerHTML = "<p class='live-text'>Live</p> ";
}
if (distance + 7200000 < 0){
ele.innerHTML = "Ended";
}
}
}, 1000);
}
t5am()
It is a counter that works fine for me, but now I want to do a double "if" function.
When the counter reaches zero, then it shows "Started".
I need that in addition to that, after 2 hours after "Started", it shows "Ended"
How can I do it?
This is how you can do this:
Just need add two more hours to your current time which i have done below and then check if distance + twoHours < 0 to show 'Ended' Message
Also, you have to clearInterval(x) as well i will leave that for you to clear when you want after the condition have been met and it is ended.
Remember: Its NOT ideal to use setTimeout for this because if the user leave the page and come page the setTimeout funtion will start from 2 hours again which is not ideal in your case you want to stop it exactly after 2 hours to when its was started which will be in real time regardless of user staying on the browser / screen or not.
Just to make some correction on using innerHTML as well. Its is not rec-emended to user innerHTML at all. I have used textContent which is exactly the same.
InnerHTML is not rec-emended officially by javascript MDN . You can read more about it here: https://developer.mozilla.org/en-US/docs/Web/API/Element/innerHTML why its not good to use innerHTML to change text in elements.
Recreated Demo: https://jsfiddle.net/bv0odyqr/1/
Try this code and should work just fine.
function t5am() {
// Set the date we're counting down to
// Year, Month ( 0 for January ), Day, Hour, Minute, Second, , Milliseconds
//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
//:::::::::::: ::::::::::::
//:::::::::::: #1 ::::::::::::
//:::::::::::: ::::::::::::
//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
// (AAAA,MM,DD,HH,mm,S));
var countDownDate = new Date(Date.UTC(2020, 05, 27, 20, 20, 0));
// Update the count down every 1 second
var x = setInterval(function() {
// Get todays date and time
var now = new Date().getTime();
const twoHours = new Date();
twoHours.setHours(twoHours.getHours() + 2);
var two = twoHours.getTime()
// Find the distance between now an the count down date
// GMT/UTC Adjustment at the end of the function. 0 = GMT/UTC+0; 1 = GMT/UTC+1.
var distance = countDownDate - now - (3600000 * 1);
//Results div
var result = document.getElementsByClassName("t5am")[0];
// 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.getElementsByClassName("t5am")[0].textContent = days + "<span>d</span> " + hours + "<span>h</span> " +
minutes + "<span>m</span> " + seconds + "<span>s</span><br />";
// If the count down is over, write some text
if (distance < 0) {
result.textContent = "Started";
} else if (distance + twoHours < 0) {
result.textContent = "Ended";
}
}, 1000);
}
t5am()
<div class="t5am"></div>
The goal is to have the countdown timer to count down to a specific time in NYC (EST).
So the the timer goes to zero at 12:00 in NYC but in LA it would go to zero at 09:00
This is the code I use from W3Schools. But I don't have enough knowledge to add the timezone.
Can anyone help please :)
<script>
// Set the date we're counting down to
var countDownDate = new Date("Dec, 2019 12:00:00 GMT-0500").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 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>
I was following this tutorial: https://www.w3schools.com/howto/howto_js_countdown.asp
And everything works except for timezones, I want it to show the same time on every device, no matter the timezone, in UTC. How would I go about this?
If someone in a timezone was ahead of me, they would see a different time (because they are an hour ahead, so the countdown would end at a different time. It would end for them an hour ahead of when it ends for me, I want the same time on the timer to be shown everywhere
Code (Edited):
function convertDateToUTC(date) {
return new Date(date.getUTCFullYear(), date.getUTCMonth(), date.getUTCDate(), date.getUTCHours(), date.getUTCMinutes(), date.getUTCSeconds());
}
function getUTCNow() {
var now = new Date();
var time = now.getTime();
var offset = now.getTimezoneOffset();
offset = offset * 60000;
return time - offset;
}
// Set the date we're counting down to
//var countDownDate = new Date("Sep 15, 2018 15:00:00").getTime();
var countDownDate = new Date("Sep 7, 2018 20:00:00");
var countDD = convertDateToUTC(countDownDate);
// Update the count down every 1 second
var x = setInterval(function() {
// Get todays date and time
var now = new Date();
var nowUTC = now.getUTCTime();
// Find the distance between now and the count down date
var distance = countDD.getTime() - nowUTC.getTime();
// 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="timer"
document.getElementById("timer").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("timer").innerHTML = "RELEASED!";
}
}, 1000);
<div id="timer"></div>
I'm using a countdown timer script that I've come across online and modified slightly to suit my website. This works perfectly for counting down to a set date/time but I need the timer to pause for about 1 hour and continue counting for 7 days. For example, when it reaches its end which is Wednesday 00:00:00, it should wait for an hour and then starts counting again till next Wednesday and so on and so fort.
-please i need help!
-here is the code i use
function teus(){
// Set the date we're counting down to
var countDownDate = new Date("Apr 3, 2018 18:00:00").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 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("teu").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("teu").innerHTML = "Service Time";
}
}, 1000);
}
teus()
function countDown(){
// Set the date we're counting down to
var countDownDate = new Date("july 11, 2017 10:19:00").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 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) {
countDownDate = new Date("july 18, 2017 10:19:00").getTime();
}
}, 1000);
}
countDown();
what I want to reach is the every week the timer will start count to the next week.
I have something that start every week in the same day and in the same hour.
I don't want to rewrite the code every week :/
Thank you.
so why so much calculation is needed just to calculate how many seconds are remaining to start of next week? for example I am writing a sample code to calculate it.
function distranceToNextWeekStartInSeconds() {
var now = new Date()
var dayDiff = 7 - now.getDay();
var startOfNextWeek = new Date(now.valueOf());
startOfNextWeek.setDate(now.getDate() + dayDiff);
startOfNextWeek.setHours(0);
startOfNextWeek.setMinutes(0);
startOfNextWeek.setSeconds(0);
return Math.floor((startOfNextWeek - now) / 1000);
}
console.log('Seconds remaining to next week start: ' + distranceToNextWeekStartInSeconds())
and you can simply call this function inside your timer for a live calculation and display purpose, That's It.
I assumed you wanted to count down to every next tuesday at 10:19:00.
I'm too lazy right now to test every cases, ut I think it should work.
function getNextTuesday() {
// Get the date from now
var date = new Date();
// Set target hour/minute/seconds
date.setHours(10);
date.setMinutes(19);
date.setSeconds(0);
// Seek for the next tuesday
var actualDay = date.getDay();
var targetDay = 2; //Tuesday
// diff will give us the day span between today and the next tuesday
var diff = targetDay - actualDay;
// If the diff is less than 0 (we're sunday or monday, or we fall on the exact day, minutes after the target hour) then add a week
if (diff < 0 || (date.getTime() - new Date().getTime()) <= 0) {
diff += 7;
}
// Finally add the day span to the current date
date.setDate(date.getDate() + diff);
return date;
}
function countDown() {
// Set the date we're counting down to
var countDownDate = getNextTuesday();
// 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 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);
if (distance < 0) {
// If the count down is over, write some text
document.getElementById("demo").innerHTML = 'IT\'S HAPPENING !';
countDownDate = getNextTuesday();
} else {
// Output the result in an element with id="demo"
document.getElementById("demo").innerHTML = days + "d " + hours + "h " + minutes + "m " + seconds + "s ";
}
}, 1000);
}
countDown();
<div id="demo"></div>