I'm creating a countdown element and I want to pass each element to setinterval function to update it each second
var countDownDate = new Date($(this).data('date')).getTime();
setInterval(function() {
var now = new Date().getTime();
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);
$(this).find('.days').text(days);
$(this).find('.hours').text(hours);
$(this).find('.minutes').text(minutes);
$(this).find('.seconds').text(seconds);
}, 1000);
});
thanks in advance
Your questions don't describe what you really wanted, but there are a few ways to access these elements inside the function.
Using an arrow function
setInterval(() => {
/*
your code goes here without changes
*/
}, 1000)
Passing parameters
setInterval(function(days, hours, minutes, seconds) {
/*
your code goes here without changes
*/
days.text(days);
hours.text(hours);
minutes.text(minutes);
seconds.text(seconds);
}, 1000, $(this).find('.days'), $(this).find('.hours'), $(this).find('.minutes'), $(this).find('.seconds'))
Binding
setInterval((function() {
/*
your code goes here without changes
*/
}).bind(this), 1000)
You could just also pass this as an argument.
I would use the arrow function since it's a more modern approach.
Related
I'm trying to add a text (that is a countdown ) made with JS that works, but only after another text (made with JS) has finished it's animation, but I'm struggling with it.
I've tried some methods but nothing worked for me, I'm new but I'm a quick learner.
Can someone help me out?
Here is a part of my code:
HTML
// Set the date we're counting down to
var countDownDate = new Date("Feb 1, 2019 11:59:20").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 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="countdown"
document.getElementById("countdown").innerHTML = days + " days left " + hours + "h "
+ minutes + "m " + seconds + "s ";
// Add text to <h1 id="fade">
var comingSoon = document.getElementById("fade");
comingSoon.innerHTML = 'COMING SOON';
// If the count down is finished, write some text
if (distance < 0) {
clearInterval(x);
//document.getElementById("countdown").innerHTML = "Well.. what are you waiting for?";
// If countdown finished, remove the <p id="countdown">
var parent = document.getElementById("comingSoonContainer");
var child = document.getElementById("countdown");
parent.removeChild(child);
// Create new <p> with text
var para = document.createElement("p");
var node = document.createTextNode("New Paragraph works fine.");
para.appendChild(node);
var element = document.getElementById("comingSoonContainer");
element.appendChild(para);
// Replace <h1> with text
para = document.createElement("h1");
node = document.createTextNode("Enjoooooy !!");
para.appendChild(node);
parent = document.getElementById("comingSoonContainer");
child = document.getElementById("fade");
parent.replaceChild(para, child);
//document.getElementById("fade").innerHTML = "Enjoy !!";
}
}, 1000);
#countdown {
font-family: 'Raleway', sans-serif;
font-size: /*1.3em;*/ 3em;
color: #ffffff;
/*including fade animation*/
-webkit-animation-name: fade;
-webkit-animation-duration: 12s;
animation-name: fade;
animation-duration: 12s;
}
/* Fade animation */
#fade {
-webkit-animation-name: fade;
-webkit-animation-duration: 8s;
animation-name: fade;
animation-duration: 8s;
}
#-webkit-keyframes fade {
from {opacity: .0}
to {opacity: 1}
}
#keyframes fade {
from {opacity: .0}
to {opacity: 1}
}
<div id="comingSoonContainer">
<h1 id="fade"></h1>
<p id="countdown"></p>
</div>
Thanks
UPDATE:
First, the problem is with your CSS styles for the countdown paragraph . You set the paragraph color to white and since your body is white as well, that's why you never see the countdown. But if you change the color to black for instance, you'll see your countdown.
Second, I added an animationend event to your fade element and put the setInterval inside it.
Here is the CSS you need to change:
#countdown {
font-family: 'Raleway', sans-serif;
font-size: /*1.3em;*/ 3em;
color: #000; // Color was #ffffff
/*including fade animation*/
-webkit-animation-name: fade;
-webkit-animation-duration: 12s;
animation-name: fade;
animation-duration: 12s;
}
And here is the javascript:
// Set the date we're counting down to
var countDownDate = new Date("Feb 1, 2019 11:59:20").getTime();
// Add text to <h1 id="fade">
var comingSoon = document.getElementById("fade");
comingSoon.innerHTML = 'COMING SOON';
comingSoon.addEventListener('animationend', ()=>{
// 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 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="countdown"
document.getElementById("countdown").innerHTML = days + " days left " + hours + "h "
+ minutes + "m " + seconds + "s ";
});
});
I removed the part where you check for distance just because it had nothing to do with what you asked for help. You can add it though.
But here is the working fiddle
https://jsfiddle.net/fwxL1sj4/33/
There is animation callbacks:
function callFunction(){
}
var element=document.getElementById('fade');
element.addEventListener("webkitAnimationEnd", callfunction,false);
element.addEventListener("animationend", callfunction,false);
element.addEventListener("onaimationend", callfunction,false);
The following line of code sets an event to happen only once per 24 hours, how do I make it occur every 12 or 6 hours? Thanks
setCookie(1, 24 * 60 * 60 * 1000);
JavaScript references time in milliseconds, and so therefore the equation 24 * 60 * 60 * 1000 is converting 24 hours into milliseconds (24 hours * 60 minutes in a hour * 60 minutes in a second * 1000 seconds in a millisecond).
Therefore, 12 hours would look like:
setCookie(1, 12 * 60 * 60 * 1000);
and 6 hours would look like:
setCookie(1, 6 * 60 * 60 * 1000);
and just for fun, 5 days would look like:
setCookie(1, 5 * 24 * 60 * 60 * 1000);
I have this piece of JavaScript code I got from online and I am trying to modify itto countdown to July 10, 2013.
var currentDate = new Date();
$('div#clock').countdown(45 * 40 * 30 * 30 * 1000 + currentDate.valueOf(), function(event) {
July 10, 2013 is about 100 days from now so I want the days to show 100. I don't understand the format of how the date is being passed,I have tried messing around with it but it still doesn't work properly. I tried passing a new Date object to it but that doesn't work either. This code seems to be coming from this jQuery countdown library.
Instead of "45 * 40 * 30 * 30 * 1000" use "100 * 24 * 60 * 60 * 1000" so:
var currentDate = new Date();
$('div#clock').countdown(45 * 40 * 30 * 30 * 1000 + currentDate.valueOf(), function(event) {
would be the final code. That is 1000 (milliseconds/second) * 60 (seconds/minute) * 60 (minutes/hour) * 24 (hours/day) * 100 (days).
I made this little function from code snippets around the net. It does what its expected to do except that it decreased by 2 seconds every countdown tick instead of one, if i refresh the page it goes back to the original time again. Can you guys see what the problem is?
jQuery.countdown = function(selector, datevalue) {
var amount = datevalue*1000;
var curdate = new Date();
curdate = curdate.getTime();
var difference = amount - curdate;
if(amount < 0 || curdate >= amount){
$(selector).html("Done");
}
else{
datevalue--;
var daysRemaining = Math.floor(difference / 1000 / 60 / 60 / 24);
var hoursRemaining = Math.floor(difference / 1000 / 60 / 60 - (24 * daysRemaining));
var minutesRemaining = Math.floor(difference / 1000 / 60 - (24 * 60 * daysRemaining) - (60 * hoursRemaining));
var secondsRemaining = Math.floor(difference / 1000 - (24 * 60 * 60 * daysRemaining) - (60 * 60 * hoursRemaining) - (60 * minutesRemaining));
$(selector).html(daysRemaining+':'+hoursRemaining+':'+minutesRemaining+':'+secondsRemaining);
setTimeout(function() {
$.countdown(selector, datevalue);
}, 1000);
}
};
$.countdown('.date', 1332239568);
Remove datevalue--;
What you're doing now is to count down to a specific epoch time datevalue. But, you are decreasing it by one second each tick. Meanwhile, current time passes in setTimeout so you are both moving in time forward and pulling the target to yourself.
Either keep the original curdate of first call, saved somewhere. Or remove datevalue--;.
There were many similar questions around but none addressed this calculation. Using javascript i it is easy to find the number of milliseconds diff b/w 2 dates for ex:
var mil = Math.floor(new Date("1/1/2012") - new Date("1/7/2012"))
mil is assigned 518400000
to get weeks i would do below
var weeks = mil / (1000*7*24*60*60);
in the above example it exactly fits 1 week. For other possible inputs i would like to get output as ex:
n Weeks, y days , z hours
So i did mil % (1000*7*24*3600) to get the modulus and from the remainder calculate number of days. but astonishingly this was answer i got from console
1 weeks , 6 days seems the week calculated before is also accounted for days again.
How should i calculate these correctly?
var seconds = (mil / 1000) | 0;
mil -= seconds * 1000;
var minutes = (seconds / 60) | 0;
seconds -= minutes * 60;
var hours = (minutes / 60) | 0;
minutes -= hours * 60;
var days = (hours / 24) | 0;
hours -= days * 24;
var weeks = (days / 7) | 0;
days -= weeks * 7;
Assuming mils is non-negative, this leaves mils in the range [0, 1000), leaves minutes and seconds in the range [0, 60), leaves hours in the range [0, 24), and leaves days in the range [0, 7).
There should be 6 days between them, not one week. Your weeks calculation needs to round down:
var weeks = Math.floor(mil / (1000 * 7 * 24 * 60 * 60));
Also, your milliseconds are negative; you want either
var mil = new Date("1/7/2012") - new Date("1/1/2012");
or
var weeks = Math.floor(Math.abs(mil) / (1000 * 7 * 24 * 60 * 60));