Develop Reference

Javascript load on page

I want that the title and subtitle shows up when the page loads. I tried several times to let it work but it won't.
jQuery(document).ready(function(){
jQuery('.element').bind('mouseover', function() {
jQuery(this).find('img').stop().each(function() {
jQuery(this).animate({
'opacity': 1
}, 200);
});
});
jQuery('.element').bind('mouseout', function() {
jQuery(this).find('img').stop().each(function() {
jQuery(this).animate({
'opacity': 0.4
}, 200);
});
});
jQuery('.element').on('pageload', function() {
jQuery(this).find('.title').stop().each(function() {
jQuery(this).animate({
'margin-left': 35,
'opacity': 1
}, 250);
});
jQuery(thi2s).find('.subtitle').stop().each(function() {
jQuery(this).animate({
'opacity': 1
}, 0);
jQuery(this).delay(150).animate({
'margin-left': 35
}, 250);
});
});
});
Can someone help me with this problem?

It's not entirely clear what you are trying to do, but at a first glance, I noticed this bug:
jQuery(thi2s).find('.subtitle').stop().each(function() {
// code
}
Obviously, the extraneous '2' should not be there, but I'm not sure if this small fix will create the intended behavior you are looking for.
Here's an example of how you should structure your code. You shouldn't really use the .bind() function for your events or reference elements using jQuery('.element'). Additionally the excessive use of this is unnecessary and complicates your code.
Consider this basic example:
$(document).ready(function () {
$("div").hover(
function () {
$("h2").animate({
left: 50,
opacity: 1
}, 500);
}, function () {
$("h2").animate({
left: 50,
opacity: 0.2
}, 500);
});
});
Check out this JSFiddle.
Hope this helps!

How do I add setTimeout to delay the fading animation in the following code?

I'm using the following to fade in and fade out elements on hover:
$(".hidden").hover(function() {
$(this).animate({
opacity: 1
});
}, function() {
$(this).animate({
opacity: 0
});
});
I would like to add a delay between opacity 1 and opacity 0 (wait a moment and then fade out the element).
How can I accomplish that?

$(".hidden").hover(function() {
$(this).animate({
opacity: 1
});
}, function() {
var _this = $(this);
setTimeout(function (){
_this.animate({
opacity:0
});
},1000)
});

Yuu can use the .delay() function http://api.jquery.com/delay/.
$(".hidden").hover(function() {
$(this).delay(1000).animate({
opacity: 1
});
}, function() {
$(this).delay(1000).animate({
opacity: 0
});
});
http://jsfiddle.net/gk14nqrx/

This will delay 1 second before fading out. You need to store a reference to $(this) because inside of setTimeout the this is no longer the DOM element.
$(".hidden").hover(function() {
$(this).animate({
opacity: 1
});
}, function() {
var that = $(this);
setTimeout(function() {
$(this).animate({
opacity: 0
});
}, 1000);
});

jQuery animation setup callback throws error

I want to implement a jQuery animation callback method progress or step,
but in either case I'm getting the following error:
NS_ERROR_IN_PROGRESS: Component returned failure code: 0x804b000f (NS_ERROR_IN_PROGRESS) [nsICacheEntry.dataSize]
I searched a lot but not able to find anything in context, I am kind of stuck here, please suggest what could cause this error?
In fiddle i tried with step and progress and its working there , but not able to get it worked in my code, I am just looking, has some one faced such kind of error in jquery animation?
The sample code is:
this.taskHandle.find('img').stop(true, true).animate({
//todo//
top: vtop, // this.taskHandle.outerHeight(),
//'top': 0 - $('.target.upper').height(),
width: 0,
opacity: 0
}, {
duration: 2000,
step: function(){
console.log('I am called');
}
},
$.proxy(function() {
// some css clearing method
}, {
// some further actions after animation completes
})
);

You have some semantic errors going on here. I'm going to repost your code, formatted for easier reading:
this.taskHandle.find('img')
.stop(true, true)
.animate(
{
//todo//
top: vtop , // this.taskHandle.outerHeight(),
//'top' : 0 - $('.target.upper').height(),
width : 0,
opacity : 0
},
{
duration:2000,
step: function() {
console.log('I am called');
}
},
$.proxy(
function() {
// some css clearing method
},
{
// some further actions after animation completes
}
)
);
First: animate() doesn't accept 3 parameters (at least not those 3 parameters). I'm not sure what you are trying to do with your css clearing method, but anything you wan't to happen after the animation is complete should be in the complete method that you add right next to the step method.
Second: $.proxy() needs to have the context in which you want it to run as the second parameter, not some other"complete"-function.
So here is a slightly modified example which works. You can try it yourself in this fiddle.
var vtop = 100;
$('div')
.stop(true, true)
.animate(
{
top: vtop,
width: 0,
opacity : 0
},
{
duration: 2000,
step: function() {
console.log('I am called');
},
complete: function () {
alert('complete');// some further actions after animation completes
}
}
);

You could use Julian Shapiro's Velocity.js, which animations are (arguable) faster than jQuery and CSS (read this for more)
It allows you to use callbacks such as :
begin
progress
complete
like :
var vtop = 100;
jQuery(document).ready(function ($) {
$('div').find("img").velocity({
top: vtop,
width: 0,
opacity: 0
}, {
duration: 2000,
begin: function (elements) {
console.log('begin');
},
progress: function (elements, percentComplete, timeRemaining, timeStart) {
$("#log").html("<p>Progress: " + (percentComplete * 100) + "% - " + timeRemaining + "ms remaining!</p>");
},
complete: function (elements) {
// some further actions after animation completes
console.log('completed');
$.proxy( ... ); // some css clearing method
}
});
}); // ready
Notice that you just need to replace .animate() by .velocity()
See JSFIDDLE

jquery fade then redirect

Alright, I maybe a bit to strung out from caffeine atm to figure this one out on my own, but i'm trying to figure out how to redirect visitors to a page after splash image has faded.
$(document).ready(
function
()
{$('.wrapper a img').hover(
function ()
{
$(this).stop().animate({ opacity: .4 } , 200);
settimeout(function(){window.location = '/blog';}, 200);
}
)});
It's not working and is drving me a bit nutt

.animate allows you to define a callback that will be invoked when the animation is complete:
$(this).stop().animate({ opacity: .4 } , 200, "swing", function() {
window.location = '/blog';
});
The third argument ("swing") is simply the default for that parameter.
An alternative syntax for the same is
.animate({ opacity: .4 }, {
duration: 200,
complete: function() { window.location = '/blog'; }
);
Finally, yet another way is to use a .promise that will be completed when the animation queue for the element is empty (i.e. all animations have ended):
.animate({ opacity: .4 } , 200)
.promise().done(function() { window.location = '/blog'; });

How to run two jQuery animations simultaneously?

Is it possible to run two animations on two different elements simultaneously? I need the opposite of this question Jquery queueing animations.
I need to do something like this...
$('#first').animate({ width: 200 }, 200);
$('#second').animate({ width: 600 }, 200);
but to run those two at the same time. The only thing I could think of would be using setTimeout once for each animation, but I don't think it is the best solution.

yes there is!
$(function () {
$("#first").animate({
width: '200px'
}, { duration: 200, queue: false });
$("#second").animate({
width: '600px'
}, { duration: 200, queue: false });
});

That would run simultaneously yes.
what if you wanted to run two animations on the same element simultaneously ?
$(function () {
$('#first').animate({ width: '200px' }, 200);
$('#first').animate({ marginTop: '50px' }, 200);
});
This ends up queuing the animations.
to get to run them simultaneously you would use only one line.
$(function () {
$('#first').animate({ width: '200px', marginTop:'50px' }, 200);
});
Is there any other way to run two different animation on the same element simultaneously ?

I believe I found the solution in the jQuery documentation:
Animates all paragraph to a left style
of 50 and opacity of 1 (opaque,
visible), completing the animation
within 500 milliseconds. It also will
do it outside the queue, meaning it
will automatically start without
waiting for its turn.
$( "p" ).animate({
left: "50px", opacity: 1
}, { duration: 500, queue: false });
simply add: queue: false.

If you run the above as they are, they will appear to run simultaenously.
Here's some test code:
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>
<script>
$(function () {
$('#first').animate({ width: 200 }, 200);
$('#second').animate({ width: 600 }, 200);
});
</script>
<div id="first" style="border:1px solid black; height:50px; width:50px"></div>
<div id="second" style="border:1px solid black; height:50px; width:50px"></div>

While it's true that consecutive calls to animate will give the appearance they are running at the same time, the underlying truth is they're distinct animations running very close to parallel.
To insure the animations are indeed running at the same time use:
$(function() {
$('#first').animate({..., queue: 'my-animation'});
$('#second').animate({..., queue: 'my-animation'});
$('#first,#second').dequeue('my-animation');
});
Further animations can be added to the 'my-animation' queue and all can be initiated provided the last animation dequeue's them.
Cheers,
Anthony

See this brilliant blog post about animating values in objects.. you can then use the values to animate whatever you like, 100% simultaneously!
http://www.josscrowcroft.com/2011/code/jquery-animate-increment-decrement-numeric-text-elements-value/
I've used it like this to slide in/out:
slide : function(id, prop, from, to) {
if (from < to) {
// Sliding out
var fromvals = { add: from, subtract: 0 };
var tovals = { add: to, subtract: 0 };
} else {
// Sliding back in
var fromvals = { add: from, subtract: to };
var tovals = { add: from, subtract: from };
}
$(fromvals).animate(tovals, {
duration: 200,
easing: 'swing', // can be anything
step: function () { // called on every step
// Slide using the entire -ms-grid-columns setting
$(id).css(prop, (this.add - this.subtract) + 'px 1.5fr 0.3fr 8fr 3fr 5fr 0.5fr');
}
});
}

Posting my answer to help someone, the top rated answer didn't solve my qualm.
When I implemented the following [from the top answer], my vertical scroll animation just jittered back and forth:
$(function () {
$("#first").animate({
width: '200px'
}, { duration: 200, queue: false });
$("#second").animate({
width: '600px'
}, { duration: 200, queue: false });
});
I referred to: W3 Schools Set Interval and it solved my issue, namely the 'Syntax' section:
setInterval(function, milliseconds, param1, param2, ...)
Having my parameters of the form { duration: 200, queue: false } forced a duration of zero and it only looked at the parameters for guidance.
The long and short, here's my code, if you want to understand why it works, read the link or analyse the interval expected parameters:
var $scrollDiv = '#mytestdiv';
var $scrollSpeed = 1000;
var $interval = 800;
function configureRepeats() {
window.setInterval(function () {
autoScroll($scrollDiv, $scrollSpeed);
}, $interval, { queue: false });
};
Where 'autoScroll' is:
$($scrollDiv).animate({
scrollTop: $($scrollDiv).get(0).scrollHeight
}, { duration: $scrollSpeed });
//Scroll to top immediately
$($scrollDiv).animate({
scrollTop: 0
}, 0);
Happy coding!