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Fading in a Javascript Object after a certain Time

So I have particle object in JavaScript which is called after a certain Time simply like this:
setTimeout(function() {
particle();
}, 3000);
Now I want this object to be faded in slowly to the canvas after the 3 seconds but I don't know how. I have tried using the jQuery fadeIn() function but it did nothing to the object.
EDIT: I am using the library particles.js from https://vincentgarreau.com/particles.js/ if you want to see the whole logic behind particle();. You can find a working code snippet there. I have not changed the code by a lot except for the styling of the particles.
Thanks a lot

i would do it with jquery the following way. my way of doing it requires jquery easing plugin. you hve to grap the corresponding DOM-element and do some animation on it.
$(document).ready(function () {
var headline = $("#app-title");
// Do time out here
headline.css({'opacity': 0});
headline.show();
headline.animate({opacity: 1}, {
step: function (now, mx) {
headline.css({'opacity': opacity});
},
duration: 800,
complete: function () {
},
//this comes from the custom easing plugin
easing: 'easeInOutBack'
});
});

jQuery animate prevent all boxes sliding up together

I have 36 boxes where you hover over the title and it slides up to show the hidden text below it, whilst it works as expected the problem is all 36 boxes slide up at the same time instead of just the one you moused over here is the script I am using:
$(document).ready(function() {
$('.caption').mouseenter(function(){
$('.caption').stop().animate({height: "60%"});
});
$('.box').mouseleave(function(){
$('.caption').stop().animate({height: "8%"}, 1000, function() {
});
});
});
Now after much reading I found that I need to use "this" so I tried this:
$(document).ready(function() {
$('.caption').mouseenter(function(){
$('.caption', this).stop().animate({height: "60%"});
});
$('.box').mouseleave(function(){
$('.caption', this).stop().animate({height: "8%"}, 1000, function() {
});
});
});
However that just disables the animation altogether, I tried using ".next" also and many other combinations that just resulted in the animation being disabled also.
In short, I have 36 boxes and I only want the actual one you mouse over to slide up not all of them at the same time.
I am a total jQuery novice and have searched for hours but cannot find a working example of exactly what I wish to achieve. Help is greatly appreciated.

Try taking the .caption out of your animate function and just use the reference to this like this
$(document).ready(function() {
$('.caption').mouseenter(function(){
$(this).stop().animate({height: "60%"});
});
$('.box').mouseleave(function(){
$(this).stop().animate({height: "8%"}, 1000, function() {
});
});
});
The this object when used with a jquery even is a reference to the specific element the event was called on.

Ah I got it !
$(document).ready(function() {
$('.caption').mouseenter(function(){
$(this).stop().animate({height: "60%"});
});
$('.caption').mouseleave(function(){
$(this).stop().animate({height: "8%"}, 1000, function() {
});
});
});
Just changed .box to .caption and its working, Thank you guys for you help !
I am going to mark yours as correct though since your answer did put me in the right direction and I only had to make that small change.

JQuery fadeOut callback function is being executed after fadeOut is over

On a click of a button, i'm trying to fadeOut an image, and while it is fading out i'm changing the source of the image. And then i'm using the fadeIn to show the new image. This works fine in Chrome, and firefox. However, in ie10, the image fades out, fades in, and then the new image appears. I can't find a a fix for it. I've tried to prolong the duration of fadeOut, fadeIn. I've tried using setTimeout function. i've tried using promise().done() function. I've tried using Jquery UI's hide/show w/ slide effect, and same issues are appearing. Nothing seems to be working. I'd really appreciate any help. Thanks
me.$el.find('#printable-detail-static-imageRight').fadeOut('fast', function(){
me.$el.find('#printable-detail-static-imageRight').attr('src', me.options.samplePrints[k+i]);
me.disableNext();
});
me.$el.find('#printable-detail-static-imageRight').fadeIn('slow')

I'm pretty sure you need to put the .fadeIn method inside the callback function in order for it to be affected by the callback function. In fact, I'd add another callback function to the .attr method to make sure that it fades back in only after the src has been changed.
Here's a jsFiddle I wrote to illustrate what I mean.

i am on a mac, but does this code works in ie ? jsFiddle
.html
<div id="content">Promises</div>
<button id="click">start animation</button>
.js
$("#click").on("click", function () {
$('#content').fadeOut({
duration: 1000,
// run when the animation is complete
complete: function () {
$("#content").append($("<div>").addClass("fakeimg"));
},
// run when the animation is complete +
//it's promise is resolved
done: function () {
$('#content').fadeIn(1000);
}
});
});

this works:
me.$el.find('#printable-detail-static-imageRight').animate({
opacity:0
}, {
duration: 700,
step: function(now, fx){
if(fx.pos > 0.40 && fx.pos < 0.5){
$(this).attr('src', me.options.samplePrints[k+i]);
me.disableNext();
}
if (fx.pos ==1) {
$(this).animate({
opacity:1
}, 200);
}
}
});

How to pause this Jquery slider?

I have been struggling with this for ever and it's making me pull my hair out!
http://webdesignsalemoregon.com/westernmennoniteschool/
I've got a slider on this home page and I'm trying to figure out how to add a "click to pause" feature to it. (and perhaps a click to resume too, haha)
I believe this is the code generating the slider
var $featured_content = jQuery('#featured #slides'),
et_featured_slider_auto = jQuery("meta[name=et_featured_slider_auto]").attr('content'),
et_featured_auto_speed = jQuery("meta[name=et_featured_auto_speed]").attr('content');
if ($featured_content.length){
var et_featured_options = {
timeout: 2000,
speed: 500,
cleartypeNoBg: true,
prev: '#featured a#featured-left',
next: '#featured a#featured-right',
pager: '#controllers',
}
if ( et_featured_slider_auto == 1 ) et_featured_options.timeout = et_featured_auto_speed;
$featured_content.cycle( et_featured_options );
}
Then I've added a simple button with ID="pauseButton" and put it above the slider. I've also got this code for that button
$('#pauseButton').click(function() {
$featured_content.cycle('pause');
});
But it doesn't actually pause the slideshow? I believe it's using the cycle plugin from http://jquery.malsup.com/cycle/ and I pulled the pause code from http://jquery.malsup.com/cycle/pause.html
Where am I going wrong?!

Your script is using jQuery.noConflict(), that causes the $ variable to be reverted back to what it was before jQuery was included. Try replacing all occurences of $() with jQuery().
jQuery('#pauseButton').click(function() {
$featured_content.cycle('pause');
});

setTimeout speeds up with multiple tabs

I’m having a setTimeout problem similar to this one. But that solution doesn't help me since I can’t use php in my file.
My site has a slider with a list of images that move every 8 seconds.However, when I have opened a few tabs in the browser and then switch back again, it goes nuts.
The slider proceeds to move the images one after the other immediately without the 8 second timedelay.
I'm only seeing it in Chrome and the latest Firefox.
**EDIT: I checked with console.log() and the setTimeout returns the same number before and after the clearTimeout. Not sure why. Maybe that also has something to do with it? **
EDIT 2: I added a fiddle: http://jsfiddle.net/Rembrand/qHGAq/8/
The code looks something like:
spotlight: {
i: 0,
timeOutSpotlight: null,
init: function()
{
$('#spotlight .controls a').click(function(e) {
// do stuff here to count and move images
// Don't follow the link
e.preventDefault();
// Clear timeout
clearTimeout(spotlight.timeOutSpotlight);
// Some stuff here to calculate next item
// Call next spotlight in 8 seconds
spotlight.timeOutSpotlight = setTimeout(function () {
spotlight.animate(spotlight.i);
}, 8000);
});
// Select first item
$('#spotlight .controls a.next:first').trigger('click');
},
animate: function(i)
{
$('#spotlight .controls li:eq(' + (spotlight.i) + ') a.next').trigger('click');
}
}

From the jQuery documentation:
Because of the nature of requestAnimationFrame(), you should never
queue animations using a setInterval or setTimeout loop. In order to
preserve CPU resources, browsers that support requestAnimationFrame
will not update animations when the window/tab is not displayed. If
you continue to queue animations via setInterval or setTimeout while
animation is paused, all of the queued animations will begin playing
when the window/tab regains focus. To avoid this potential problem,
use the callback of your last animation in the loop, or append a
function to the elements .queue() to set the timeout to start the next
animation.

I finally found my answer and it’s not at all what I was expecting.
It seems the culprit is jQuery’s .animate(), which I use to move the images in the slider.
I calculate and move my images positions with this:
$('.spotlight-inner')
.animate(
{ left: scrollToVal },
{duration: 'slow'}
)
;
Now the problem seems to be that in some browsers, after you switch to a new tab and back, jQuery’s .animate() saves up the animations and fires them all at once. So I added a filter to prevent queueing. That solutions comes from CSS-Tricks.com :
$('.spotlight-inner')
.filter(':not(:animated)')
.animate(
{ left: scrollToVal },
{duration: 'slow'}
)
;
The first slide you see when you go back can act a little jumpy but it’s better than the superspeed carousel from before.
Fiddle with the full code here

There is an easier way using the jquery animate queue property:
$(this).animate({
left: '+=100'
}, {duration:500, queue:false});

I don't know if this will help you, but it helped me with my slideshow. What I did was everytime I called an animation that was supposed to happen at a set interval because of the setTimeout, I called clearQueue() which would get rid of any other animations that had been set to happen. then i'd call the animation. That way when you come back to that tab, you don't have all these animations queued up and it goes crazy. at max you'll only have one set up.
So something like this:
spotlight.timeOutSpotlight = setTimeout(function () {
spotlight.clearQueue(); // get rid of other instances of the animation
spotlight.animate(spotlight.i);
}, 8000);
It may not work in all cases (depending on timing), but I hope that helps somebody!

You must also think you use clearTimeout.
As you call setTimeout function it returns an ID you can save this ID in a variable like
timeoutID = setTimeout(function () {
spotlight.animate(spotlight.i);
}, 8000);
and before setting a new timeout you can call the function like
clearTimeout(timeoutID)

My suspicion is that the browser queues input events like 'click' but only fires them when the tab where the event occurs actually has focus.
Perhaps you should try calling your click callbacks directly instead of using trigger('click').
Something like this:
spotlight: {
i: 0,
timeOutSpotlight: null,
clickFunc: function(element) {
// do stuff here to count and move images
// Clear timeout
clearTimeout(spotlight.timeOutSpotlight);
// Some stuff here to calculate next item
// Call next spotlight in 8 seconds
spotlight.timeOutSpotlight = setTimeout(function () {
spotlight.animate(spotlight.i);
}, 8000);
},
init: function()
{
$('#spotlight .controls a').click(function (e) {
// Don't follow the link
e.preventDefault();
spotlight.clickFunc(this);
});
// Select first item
spotlight.clickFunc($('#spotlight .controls a.next:first'));
},
animate: function(i)
{
var element = $('#spotlight .controls li:eq('+spotlight.i+') a.next');
spotlight.clickFunc(element);
}
}

What version of jQuery are you running? Apparently this problem was 'fixed' for version 1.6.3 - they reverted the change that caused this to happen. Discussions here and here.
Though this issue will likely have to be addressed in the future, it seems as though we're off the hook for now.