Develop Reference

Transitions in fancyBox 3

Is it possible to specify which transition to use in fancyBox 3? There are 3 transitions I'm interested in:
Open slide/gallery
Navigate between slides
Close slide/gallery
By default, fancyBox 3 uses different transitions for different types of content.
<!--This will zoom in-->
<a data-fancybox href="#html-content">Open</a> <!--This will fade in-->
<div id="html-content" style="display: none;">
<p>This content does just fades in.</p>
</div>
Look at this codePen to see it in action, including the navigation transitions. For images we have:
Zoom in
Slide horizontally
Zoom out
For html content we have:
Fade in
Slide horizontally
Fade out
Is it possible to change this default behavior in fancyBox 3? For example to let also images fade in and out? I was not able to find any information on this in the documentation.

As of fancyBox version 3.1.20, this is possible through the options animationEffect and transitionEffect. You can find the documentation here.

Not sure if I'm getting this right... but if you want to fade in & out the images (between each transition) you can trick them by using a bit of CSS, add this to your jquery.fancybox.css:
.fancybox-slide.fancybox-slide--image {
opacity: 0;
-moz-transition: all 0.01s ease;
-o-transition: all 0.01s ease;
-webkit-transition: all 0.01s ease;
transition: all 0.01s ease;}
.fancybox-slide.fancybox-slide--image.fancybox-slide--complete {
opacity: 1!important;
-moz-transition: all 0.25s ease;
-o-transition: all 0.25s ease;
-webkit-transition: all 0.25s ease;
transition: all 0.25s ease;}
And also modify the speed of the jquery.fancybox.js lib to:
// Animation duration in ms
speed : 100
Disclaimer: I'm just a mortal and this is not the neatest solution, but worked for me (:

Make div visible by fading it in

When the page loads, I have hidden a div using
#hidDiv{
visibility: hidden;
}
I use jQuery to make it visible.
$('#hidDiv').css('visibility', 'visible');
My question is how do I make it fade in gently instead of appearing quickly?
Note: It's important that visibility: hidden; should be maintained. E.g. can not use hide(); instead of visibility: hidden;

If you don't want to use JQuery,
html:
<div id="theElement" class="hide"></div>
css:
.hide {
opacity: 0;
transition: opacity 1s linear;
-webkit-transition: opacity 1s linear;
-moz-transition: opacity 1s linear;
-o-transition: opacity 1s linear;
}
.show {
opacity: 1;
transition: opacity 1s linear;
-webkit-transition: opacity 1s linear;
-moz-transition: opacity 1s linear;
-o-transition: opacity 1s linear;
}
*1s is the number of seconds to fade for. Make sure you change all of them.
You can then just change the class with javascript:
document.getElementById('theElement').className = 'show'; // Fade in
document.getElementById('theElement').className = 'hide'; // Fade out
More Reading:
Simple documentation from W3Schools
More thorough documentation from MDN
Compatibility info from caniuse.com

Use jQuery fadeIn()
$('div').fadeIn();
Otherwise, if visibility must be maintained, do
$('div').css({opacity: 0, visibility: "visible"}).animate({opacity: 1}, 'slow');
$('div').css({opacity: 0, visibility: "visible"}).animate({opacity: 1}, 'slow');
div{
width:100px;
height:100px;
background:green;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<div></div>
See Want to use jquery fade in effects, but want to use visibility:hidden initially

As AmmarCSE has stated, if you are using jQuery you can use $("div").fadeIn(); for more control you can also set a timeframe using fadeIn's first argument. ie
$("div").fadeIn("slow");.
This first argument can be one of the built in time values of "fast" or "slow" etc or it can be a time in milliseconds ie
$("div").fadeIn(1000);
The function also has a callback in case you want to do something once the element has finished fading in. It can be used like so...
$("div").fadeIn("slow",function(){
console.log("finished fading in");
});
You can also use fadeOut() in the same manner to fade the div back out... $("div").fadeOut("slow");
The docs on fadeIn() can be found here -> http://api.jquery.com/fadein/
Another option would be to use jQuery's animate() function on the elements opacity. Ie.
$("div").animate({
opacity:0
},"slow");
This is useful if you also want to animate other properties of the element at the same time. ie.
$("div").animate({
opacity:0,
left:200
},"slow");
The docs for animate() can be found here -> http://api.jquery.com/animate/
Another option would to use css transitions like so...
div {
opacity:0;
transition:opacity 1s;
-webkit-transition:opacity 1s;
-moz-transition:opacity:1s;
}
div.fadeIn {
opacity:1;
}
And then use jquery to add or remove the fadeIn class to trigger the fading ie.
$("body").on("click",function(){
$("div").toggleClass("fadeIn");
});
This will fade the div in or out on click of the body.
More info on transitions here -> http://www.w3schools.com/css/css3_transitions.asp
You could also use css animations but I wont go into that here. Hope the extra info helps someone.

ToggleClass animate jQuery?

I have a section on my website that when a user clicks I would like it to expand, I'm using the jQuery's toggleClass for this...
expandable: function(e) {
e.preventDefault();
$(this).closest('article').toggleClass('expanded', 1000);
}
This is working fine, only I'd like to somehow animate it. In chrome my article slowly grows to the new size, only in Firefox it 'instantly' resizes itself with no animation, is there a way to have this animate?

jQuery UI extends the jQuery native toggleClass to take a second optional parameter: duration
toggleClass( class, [duration] )
Docs + DEMO

.toggleClass() will not animate, you should go for slideToggle() or .animate() method.

You can simply use CSS transitions, see this fiddle
.on {
color:#fff;
transition:all 1s;
}
.off{
color:#000;
transition:all 1s;
}

I attempted to use the toggleClass method to hide an item on my site (using visibility:hidden as opposed to display:none) with a slight animation, but for some reason the animation would not work (possibly due to an older version of jQuery UI).
The class was removed and added correctly, but the duration I added did not seem to make any difference - the item was simply added or removed with no effect.
So to resolve this I used a second class in my toggle method and applied a CSS transition instead:
The CSS:
.hidden{
visibility:hidden;
opacity: 0;
-moz-transition: opacity 1s, visibility 1.3s;
-webkit-transition: opacity 1s, visibility 1.3s;
-o-transition: opacity 1s, visibility 1.3s;
transition: opacity 1s, visibility 1.3s;
}
.shown{
visibility:visible;
opacity: 1;
-moz-transition: opacity 1s, visibility 1.3s;
-webkit-transition: opacity 1s, visibility 1.3s;
-o-transition: opacity 1s, visibility 1.3s;
transition: opacity 1s, visibility 1.3s;
}
The JS:
function showOrHide() {
$('#element').toggleClass("hidden shown");
}
Thanks #tomas.satinsky for the awesome (and super simple) answer on this post.

You should look at the toggle function found on jQuery. This will allow you to specify an easing method to define how the toggle works.
slideToggle will only slide up and down, not left/right if that's what you are looking for.
If you need the class to be toggled as well you can deifine that in the toggle function with a:
$(this).closest('article').toggle('slow', function() {
$(this).toggleClass('expanded');
});

Should have checked, Once I included the jQuery UI Library it worked fine and was animating...

Delay and animate background

I want to make a background image disappear. It works.
But it fails when I try to delay it or to animate it.
Any guess what it's wrong and how to do it well?
$(function(){
$("#foto1").click(function() {
$("#foto1").delay(1000).animate.css({"background":"none"},2000);
});
})
http://jsfiddle.net/78W3u/

Tried like this
$(document).ready(function(){
$("#foto1").click(function() {
$(this).delay(1000).fadeOut(20000, function(){
$("#foto1").css('background', 'none') //<=== this remove the background after the animation stops
});
});
})​
http://jsfiddle.net/78W3u/5/

This will fadeout an image : http://jsfiddle.net/2MQeC/
$(function(){
$("#foto1").click(function() {
$("#foto1").fadeOut(2000);
});
})​
-- EDIT --
This will animate the background independently of the image : http://jsfiddle.net/2MQeC/1/
#foto1 {
background: black;
-webkit-transition: background 1.5s ease; /* Saf3.2+, Chrome */
-moz-transition: background 1.5s ease; /* FF4+ */
-ms-transition: background 1.5s ease; /* IE10 */
-o-transition: background 1.5s ease; /* Opera 10.5+ */
transition: background 1.5s ease;
}
​
$(function(){
$("#foto1").click(function(){
$this = $(this);
setTimeout(function(){
$this.css({
background: 'green'
});
}, 1000); // delay
});
})​;
As you can see, this rely on CSS3 transitions for background animation.
A better cross browser solution would be to use jQuery .animate() function.
But you can't modify as many properties as .css() could.
Extract from jQuery .animate() documentation :
Most properties that are non-numeric cannot be animated using basic
jQuery functionality (For example, width, height, or left can be
animated but background-color cannot be, unless the
jQuery.Color() plugin is used).
However, you could change your markup and separate your image and your background in two div who are superimposed. This could simplify what you are trying to do.

Adding 'Fade out/Fade in' to Responsive Media Queries

I'm wondering how to add the 'Fade in/Fade out' effects to elements that I make appear or disappear with a responsive web site using CSS3 media queries. I've figured out how to use linear transitions, but would really like to use a fade.

To do this with CSS you will need to use transitions. The only way I can think to fade in/out an element with CSS transitions would be to set the opacity to zero and then animate the opacity back to one, but you can't do this with CSS alone (you would need some JS to time the events properly):
$(window).on('resize', function () {
if ($(this).width() <= 480) {
//do code for less than 480px wide
$('#some-element').css('opacity', 0).addClass('transition').css('opacity', 1);
setTimeout(function () {
$('#some-element').removeClass('transition');
}, 500);
}
}).trigger('resize');
Where the transition CSS class would have the transition rule set:
.transition {
-webkit-transition : opacity 0.5s linear;
-moz-transition : opacity 0.5s linear;
-ms-transition : opacity 0.5s linear;
-o-transition : opacity 0.5s linear;
transition : opacity 0.5s linear;
}