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Multi-element jQuery animation issue

I am trying to loop through an animation selecting multiple elements and moving them as long as the mouse hovers over the parent area. This works well enough, but each time the animation loops through the first element (child) moves faster than the others. ??? JSFiddle Example
HTML:
<div id="menuContent">
<button id="btn1" class="mainButton" left="0"/>
<button id="btn2" class="mainButton" left="0"/>
<button id="btn3" class="mainButton" left="0"/>
</div>
jQuery:
$("#menuContent").hover(function () {
loop();
}
, function () {
stop();
}
);
function stop() {
$(".mainButton").stop();
}
function loop() {
$(".mainButton").stop().animate({ left: "+=20"}, 100, 'linear', function () { loop(); });
}

From the documentation:
complete
A function to call once the animation is complete, called once per matched element.
When you call animate it starts 3 animations. Animation for the first element gets started and finished first. And then its complete gets called and you stop and start all animations, though some of them didn't get completed yet.
Consider this example (Fiddle):
function loop() {
$('.mainButton').stop().animate({
left: '+=1'
}, 1, 'linear', function() {
loop();
});
}
Only one circle will be moving because there is no time gap for others to move.
You can use promises to make it work (Fiddle):
$('#menuContent').hover(function() {
$('.mainButton').data('run', true);
loop();
}, function() {
$('.mainButton').data('run', false);
});
function loop() {
if (!$('.mainButton').data('run')) return;
$('.mainButton').animate({left: '+=10'}, 100, 'linear').promise().done(loop);
}

Danil Speransky is correct. However there is an options argument to the animate function to allow animations to not run in a rigid queue.
`$(".mainButton").animate({ left: "+=20"},{queue: false}, 100, 'linear', function () { loop();});`
Check out the documentation for queue:false here.

You're mileage may vary, but doing these two things seem to help a lot:
First, store the jQuery object for the .mainButton elements:
var $mainButton = $('.mainButton')
Second, Make the left increment more and also increase the delay:
$mainButton.stop().animate(
{ left: "+=1000"},
5000,
'linear',
function() { loop() })
You can toy with the numbers more to see if you get even better performance.
https://jsfiddle.net/wotfLyuo/8/

Your complete handler is called, if the animation for one elements in the jquery collection is finished. So when the first element is finished, you call loop and stop the animation of the other elements. Better use promise and done and save the state of your animation within the collection:
$("#menuContent").hover(function () {
start();
}, function () {
stop();
});
function start() {
$(".mainButton").data('stopped', false);
loop();
}
function stop() {
$(".mainButton").data('stopped', true).stop();
}
function loop() {
var $mainButtons = $(".mainButton").stop();
if(!$mainButtons.data('stopped'))
$mainButtons.animate({ left: "+=20"}, 100, 'linear').promise().done(loop);
}
Here is a working fiddle (https://jsfiddle.net/wotfLyuo/5/)

Automatically move div with javascript on delay

I have the below piece of code that moves a onto the screen when ?added is in the URL which works great. I now need to add a piece of code to it that then moves the back over after 5 seconds. I have noticed there's a delay function but I'm not sure how to add it into the code. Can anyone help? Many thanks!
$(document).ready(
function () {
if (document.URL.indexOf("?added") >= 0) {
$('#popout-left-menu-container')
.animate({
'right': '2px'
}, 300);
};
});

You can use the setTimeout function to delay something in javascript. Maybe like this:
$('#popout-left-menu-container').animate({'right':'2px'},300);
setTimeout(function(){
//This is animation that runs after 5 seconds. You can use it to move the block back.
//You have to set your parameters yourself here
$('#popout-left-menu-container').animate({'right':'0px'},300);
}, 5000);

$(document).ready(
function () {
if (document.URL.indexOf("?added") >= 0) {
setTimeout(function(){
$('#popout-left-menu-container')
.animate({
right:'2px'
},300);
},5000);
};
});

You should do it with .delay().
$("query").animate(firstAnimation, firstDuration).delay(milliseconds).animate(secondAnimation, secondDuration);

How to continuously bounce an object when site is live

I am new to JavaScript and jQuery. I have trouble in my new project. I want to need a image is bouncing. I got a script from net. But This function is only for jumping on the click.I want its jumping when the site is loaded. Please help me.
Link http://www.tycoonlabs.com/help/bouncing%20-%20Copy.html
This is my script
<SCRIPT>
$(function(){
$('#bouncy1').click(function () {
$(this).effect("bounce", { times:5 }, 300);
});
});
</SCRIPT>
Thanks and Regards

If you want to have it bounce while something is happening and then stop it, you could use setInterval
var interval = setInterval(function(){
jQuery('#someId').effect('bounce', {times: 5}, 300);
}, 500); // every half second
// Do some stuff to load up your site;
clearInterval(interval); // Stop the bounce interval
You may want to adjust the times parameter and the delay to meet your needs and effect.

Try this:
<script>
$(function(){
function bounceObject(obj)
{
obj.effect("bounce", { times:5 }, 300);
}
bounceObject($('#bouncy1'));
$('#bouncy1').click(function () {
bounceObject($(this));
});
});
</script>

this works well
function bounce(){
$('#test').effect( "bounce", "slow", bounce);
}
bounce();
http://jsfiddle.net/xGe2D/

How to add a wait time before hover function is executed

I am working on a nested menu, and when my mouse move over a option, a sublist will show up.
Here is my hover function:
$( ".sublist" ).parent().hover( function () {
$(this).toggleClass("li_hover",300); //use to change the background color
$(this).find(".sublist").toggle("slide", {}, 500); //sub list show / hide
});
Now, I want add a short period before the sublist shows up to prevent the crazy mouse moving from user. Does somebody have a good suggestion on this?
Update:
Thanks for you guys, I did a little bit change on my program, recently it looks like this:
function doSomething_hover (ele) {
ele.toggleClass("li_hover",300);
ele.find(".sublist").toggle("slide", {}, 500);
}
$(function () {
$( ".sublist" ).parent().hover( function () {
setTimeout(doSomething_hover($(this)), 3000);
});
}):
This is weird that setTimeout will not delay anything. but if I change the function call to doSomething_hover (without "()"), the function will delay good. but i can not pass any jquery element to the function, so it still not works, could somebody tell me that how to make doSomething_hover($(this)) work in setTimeout ?
Update 2:
Got the setTimeout work, but it seems not what I want:
What I exactly want is nothing will happen, if the mouse hover on a option less than 0.5sec.
Anyway, here is the code I make setTimeout work:
function doSomething_hover (ele) {
ele.toggleClass("li_hover",300);
ele.find(".sublist").toggle("slide", {}, 500);
}
$(function () {
$( ".sublist" ).parent().hover( function () {
var e = $(this);
setTimeout(function () { doSomething_hover(e); }, 1000);
});
}):
Final Update:
I got this work by using clearTimeout when I move the mouse out.
so the code should be:
$( ".sublist" ).parent().mouseover( function () {
var e = $(this);
this.timer = setTimeout(function () { doSomething_hover(e); }, 500);
});
$( ".sublist" ).parent().mouseout ( function () {
if(this.timer){
clearTimeout(this.timer);
}
if($(this).hasClass("li_hover")){
$(this).toggleClass("li_hover");
}
$(this).find(".sublist").hide("slide", {}, 500);
});
This is the part in the $(document).ready(). Other code will be same as above.
真. Final Update:
So, mouseover and mouseout will lead to a bug sometime, since when I move the mouse to the sublist, the parents' mouseover event will be fire, and hide the sublist.
Problem could be solved by using hover function:
$( ".sublist" ).parent().hover(
function () {
var e = $(this);
this.timer = setTimeout(function () { doSomething_hover(e); }, 500);
},
function () {
if(this.timer){
clearTimeout(this.timer);
}
$(this).find(".sublist").hide("slide", {}, 500);
if($(this).hasClass("li_hover")){
$(this).toggleClass("li_hover",300);
}
}
);
Thanks all

Try this please:
Code
setInterval(doSomthing_hover, 1000);
function doSomthing_hover() {
$(".sublist").parent().hover(function() {
$(this).toggleClass("li_hover", 300); //use to change the background color
$(this).find(".sublist").toggle("slide", {}, 500); //sub list show / hide
});
}​
SetTime vs setInterval
At a fundamental level it's important to understand how JavaScript timers work. Often times they behave unintuitively because of the single thread which they are in. Let's start by examining the three functions to which we have access that can construct and manipulate timers.
var id = setTimeout(fn, delay); - Initiates a single timer which will call the specified function after the delay. The function returns a unique ID with which the timer can be canceled at a later time.
var id = setInterval(fn, delay); - Similar to setTimeout but continually calls the function (with a delay every time) until it is canceled.
clearInterval(id);, clearTimeout(id); - Accepts a timer ID (returned by either of the aforementioned functions) and stops the timer callback from occurring.
In order to understand how the timers work internally there's one important concept that needs to be explored: timer delay is not guaranteed. Since all JavaScript in a browser executes on a single thread asynchronous events (such as mouse clicks and timers) are only run when there's been an opening in the execution.
Further read this: http://ejohn.org/blog/how-javascript-timers-work/

timeout = setTimeout('timeout_trigger()', 3000);
clearTimeout(timeout);
jQuery(document).ready(function () {
//hide a div after 3 seconds
setTimeout( "jQuery('#div').hide();",3000 );
});
refer link
function hover () {
$( ".sublist" ).parent().hover( function () {
$(this).toggleClass("li_hover",300); //use to change the background color
$(this).find(".sublist").toggle("slide", {}, 500); //sub list show / hide
});
}
setTimeout( hover,3000 );
....

You could use .setTimeout
$(".sublist").parent().hover(function() {
setTimeout(function() {
$(this).toggleClass("li_hover", 300); //use to change the background color
$(this).find(".sublist").toggle("slide", {}, 500); //sub list show / hide
}, 1000);
});​

jQuery slideshow

I'm trying to create my own slideshow. The following code fades from one image to another. I'd like to cycle from img1.jpg to img4.jpg but i'm not sure how to pause after each change.
i++;
temp = "img"+i+".jpg";
$("#img").fadeOut(function() {
$(this).load(function() { $(this).fadeIn(); });
$(this).attr("src", temp);
});
UPDATE: I've changed the code to the following. On John Boker's advice i've renamed the images to img0, img1, img2, img3. It goes to the first, second, third image the just stops. Any ideas?
<html>
<head>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>
<script>
$(document).ready(function(){
var temp="";
function slideshow(i)
{
temp = "img"+i+".jpg";
$("#img").fadeOut(function() {
$(this).load(function() {
$(this).fadeIn();
// set a timeout of 5 seconds to show the next image;
setTimeout(function(){ slideshow((i+1)%4); }, 5000);
});
$(this).attr("src", temp);
});
}
slideshow(0);
});
</script>
</head>
<body>
<img src="img1.jpg" id="img"/>
</body>
</html>

You can do it like this, using setInterval:
$(function() {
var i = 0;
// Four-second interval
setInterval(function() {
$("#img").fadeOut(function() {
$(this).attr("src", "img" + i++ % 4 + ".jpg");
$(this).fadeIn();
});
}, 4000);
}
I've simplified a few things that might have been causing some of the other problems you're seing, removing the (seemingly superfluous) call to load inside your fadeOut callback and eliminating the unnecessary temp variable.
(Finally, if you aren't just doing this to learn, consider using one of the many excellent slideshow plugins out there, like Cycle.)

you probably should have that inside a function:
// show image i
function slideshow(i)
{
temp = "img"+i+".jpg";
$("#img").fadeOut(function() {
$(this).load(function() {
$(this).fadeIn();
// set a timeout of 5 seconds to show the next image;
setTimeout(function(){ slideshow((i+1)%4); }, 5000);
});
$(this).attr("src", temp);
});
}

check out this example...
$(function(){
$('.slideshow img:gt(0)').hide();
setInterval(function(){$('.slideshow :first-child').fadeOut(2000).next('img').fadeIn(2000).end().appendTo('.slideshow');}, 4000);
});
A fiddle
simply change the 4000 to 8000 in the script if you want to pause on each image for 8 seconds instead of 4 seconds.

Take a look at this jQuery slideshow question

set up window.setInterval(function, delay) to call a function at a set interval to execute the code that you have.
There are plenty of plugins that will already cycle images for you (unless the challenge is to write your own), one of my particular favourites is the cycle plugin.

One trick is use an animate a property of an element to its current value using a timer.
Eg
$("#img").fadeIn().show(3000).fadeOut();
Because $(this) is already visible, adding the .show(3000) means that element stays visible for 3s before fading out