Develop Reference

Animating class toggle/element swap

I've written a function that swaps a "Menu" button with a "Close" button when clicked (hiding one div and displaying another), and vice versa. I'm struggling to add an animation to the toggle of each swap.
This is what I have:
$(document).ready(function() {
$('#menu-button').on('click', function() {
$('#menu-button').toggleClass('inactive', 1000);
$('#close-button').toggleClass('inactive', 1000).toggleClass('active', 1000);
});
$('.close-trigger').on('click', function() {
$('#close-button').toggleClass('active').toggleClass('inactive', 1000);
$('#menu-button').toggleClass('inactive', 1000).toggleClass('active', 1000);
});
});
I've also tried fadeIn/fadeOut/fadeToggle instead of toggleClass to no avail. The problem with fadeToggle is that both elements briefly appear at the same time, and there's still no fade animation. Is there a better way to program this?

please try this
$(document).ready(function() {
$('#button1').on('click', function() {
$('#button1').hide();
$('#button2').show().addClass('toggle');
});
$('#button2').on('click', function() {
$('#button2').hide();
$('#button1').show().addClass('toggle');
});
});
#button2
{
display:none;
}
.button.toggle
{
opacity: 1;
animation-name: fadeInOpacity;
animation-iteration-count: 1;
animation-timing-function: ease-in;
animation-duration: 2s;
}
#keyframes fadeInOpacity {
0% {
opacity: 0;
}
100% {
opacity: 1;
}
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js"></script>
<button id="button1" class="button" >button1</button>
<button id="button2" class="button" >button2</button>

If you wish to use toggleClass, you must accompany it with a CSS transition in your stylesheet. Otherwise, the element will simply disappear, as toggleClass does not provide animation by itself.
A CSS transition would be simple to add to your stylesheet, all that would be necessary would be to place these properties on the rule for your class:
transition-property: all;
transition-duration: 0.5s; /* or however long you need it to be */
Remember that properties such as display cannot be animated, so you must control the appearance using a property such as opacity, which can be animated because it is a number.

toggleClass() doesn't allow animation. The second argument is not the time. See the docs:
http://api.jquery.com/toggleclass/
I guess the best for you would be CSS transition:
https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Transitions/Using_CSS_transitions
If you don't want to use transition, that would do the thing:
$('#menu-button').on('click', function() {
$('#menu-button').hide();
$('#close-button').fadeIn();
});
$('.close-trigger').on('click', function() {
$('#close-button').hide();
$('#menu-button').fadeIn();
});

Apply Css Animation to a class with onclick Using JavaScript

I have a this script :
function ani(){
document.getElementById('para').className ='exeInputapparition';
}
To apply a css animation on my element who has the ID para.
It's working but i wanted to know if it's possible to apply to all element who have the class para instead of the ID because i have more than one element where i need to apply my CSS animation.
Thanks in Advance for your help :)
The Css :
#keyframes inputapparition {
0%
{
opacity: 0;
}
100%
{
opacity: 1;
}
}
.exeInputapparition
{
animation-name: inputapparition;
animation-duration: 0.5s;
animation-fill-mode: forwards;
}
#para
{
margin: 0;
font-family: "Roboto"
font-size: 20px;
opacity: 0;
}

The function querySelectorAll returns all elements, it's a "DOM array", therefore there isn't the attribute className. You should loop the list and change one by one:
var allElementsPara = document.querySelectorAll(".para");
for (var i = allElementsPara.length - 1; i >= 0; i--) {
allElementsPara.item(i).classList.add("exeInputapparition");
};

You can use document.querySelectorAll
var x=document.querySelectorAll(".para");
for(var a =0;a<x.length;a++){
x[a].classList.add("exeInputapparition")
}
JSFIDDLE
JSFIDDLE WITH .para

The id is unique. You must use a same class for all element that you want to animate. For all element, put the class animate and edit the function
function ani(){
document.getElementsByClassName('animate').className ='exeInputapparition';
}

A more performing solution would be to apply the class to the body element.
Every access to the DOM takes some ms and when your web page becomes huge, with a lot of JavaScript, it can get slow.
Accessing a single DOM element (<body>) instead N elements with the given class will:
reduce the number of accesses to the DOM;
reduce to 0 the queries you perform on the DOM;
make sure all the elements starts appearing at the same time;
assure that every element with the class para added after the script has run, will have the correct style;
// here I use a `setTimeout` to make the function start automatically
// logically you can take the content of this function and put it
// wherever you prefer
setTimeout(function() {
document.body.className += ' in';
}, 1000);
.para {
opacity: 0;
transition: opacity 0.5s linear;
}
.in .para {
opacity: 1;
}
<div class="para">para 1</div>
<div class="para">para 2</div>
<div class="para">para 3</div>

You can disregard the previous answers, people did and could not know what exactly you want before you posted the css.
You do not the keyframes for this.
Here is a full JS solution, as you need JS for this anyway.
document.querySelector(".reveal3").addEventListener("click", function(){
toggle();
});
function toggle(){
var c = document.querySelector(".reveal3");
if(c.style.opacity == 1){
c.style.opacity = 0;
} else {
c.style.right = "0px";
c.style.opacity = 1;
}
}
See it in action here, the div on the right side, click on it to toggle visibility.
http://codepen.io/damianocel/pen/GopoJB

this solution will help your.it is easy to use jquery with this.I have implemented for a div.you can use it for image also.so try this
<html>
<head>
<title></title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.0/jquery.min.js"></script>
</head>
<body>
<div class="clickme" style="background-color:orange;width:100px;height:100px;">
<!--use <img src="imageurl"/> here-->
</div>
<!-- js-->
<script type="text/javascript">
$(document).ready(function(){
$(".clickme").click(function(){
$(this).animate({opacity:0.5},1000);
});
});
</script>
</body>
</html>

jQuery - how to remove a class from an element with a given delay?

When a user updates a record in the database, I'll modify the record using an AJAX request. Then, I add to the rendered div a class by calling the addClass method. The class I add (let's call the class colored) to the div contains only a background color directive (to highlight the current modified record).
So far so good.
Now I want to remove this class with a fadeOut effect, after 1 second.
I've tried these approaches, but in both cases it's not only removing the class but the whole div.
$("#id1").fadeOut(1000, function() {
$(this).removeClass('colored');
});
or
$("#id1").delay(1000).fadeOut().removeClass('updated_item');
Why is the div removed instead of the class ? Actually, the div is getting a display: none; style - I see this in the console.

fadeOut will fade the entire element out and hide it from the screen. If you want to fade the effects of the class, you can use jQuery UI .removeClass() (which accepts a time duration and fade effect, unlike regular jQuery) or CSS3 transitions.

You can use setTimeout function like this:
setTimeout(
function(){
$("#id1").removeClass('updated_item');
}
,1000 //1 second
)
And if you want to change the color with animation you can just add a transition style in your CSS like this:
.myDiv{
background:red;
transition:background 1s;
-webkit-transition:background 1s;
}
.colored
{
background:blue;
}

I dont know if I got it, is this what you want ?
Fiddle
jQuery('.action').click(function() {
jQuery(this).parent().addClass('highlight');
if ( confirm('Are you sure?') ) {
jQuery(this).parent().fadeOut(1000, function() {
jQuery(this).addClass('remove').removeClass('highlight');
});
} else {
jQuery(this).parent().removeClass('highlight');
}
});
.highlight {
background-color: red;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div>
#1 Click me
</div>
<div>
#2 Click me
</div>

You're applying the fadeOut function to the div itself, not on the class:
//the div, will fadeout after 1000 ms and get the class removed
$("#id1").delay(1000).fadeOut().removeClass('updated_item');
If you want to remove the background-color with a fading effect, you'd have to use something like:
setTimeout(function() {
$('#id1').removeClass('updated_item');
}, 1000)
On the css side, use a transition for the fadeOut effect:
#id1 {
transition: background-color 0.5s ease;
}
.updated_item {
background-color: yellow;
}
Fiddle

css transition with javascript has no transition

when I try to make a simple transition with pure CSS all works fine.
But when I try to call a javascript-function which modiefies the CSS when clicked on a link, there is no transition. I want to fade in a grey layer.
HTML:
<a href="someImage.jpg" id="test">
<img src="someImage.jpg" alt="" />
</a>
<section id="grey">
</section>
JS:
var grey = document.getElementById("grey");
var link = document.getElementById("test");
link.onclick = function () {
grey.style.display = "block";
grey.style.opacity = "1";
return false;
};
CSS:
section {
display:none;
size and position...
opacity: 0;
background-color: rgba(0,0,0,0.5);
transition: opacity 1s .5s;
}
(see http://jsfiddle.net/7zEhx/5/ )
I'm using FF22, does anyone know any solutions?

display: none elements don’t transition, and the display: block hasn’t kicked in before you set the other style. There are horrible hacks like this:
setTimeout(function() {
grey.style.opacity = "1";
}, 0);
But I’d just set width to 0 instead of setting display and then put it back at 100%.
Updated jsFiddle

jquery mouseenter and fadeTo

I want a div to be faded to opacity 1 when mouse enters, and to 0.5 when it leaves. This is my code:
<script>
$(document).ready(function(){
$("#header").mouseenter(function(){
$("#header").fadeTo('fast', 1);
});
$("#header").mouseleave(function(){
$("#header").fadeTo('fast', 0.5);
});
}
</script>
HTML:
<body>
<div id="header">
<h1>Hello!</h1>
<p>blah blah...</p>
</div>
</body>
I have a div in the body containing one h1 and one p. Nothing happens when I move the mouse over it. Is something wrong?

Your wrong indentation hides a syntax error :
$(document).ready(function(){
$("#header").mouseenter(function(){
$("#header").fadeTo('fast', 1);
});
$("#header").mouseleave(function(){
$("#header").fadeTo('fast', 0.5);
});
}); // <= missing parenthesis
Other than that, it works. Be careful that 0.5 isn't really transparent for all color combinations.

How about css?
#header {
opacity: .5;
transition: opacity .3s ease-in-out;
}
#header:hover {
opacity: 1;
}
Just make sure to add all the css vendor prefixes. This is better than using jQuery IMO. If browser doesn't support transition or opacity it's no big deal, that's what "graceful degradation" is all about.