css animation with setTimeout doesn't work - javascript

I made some animation with CSS3.
Source is so simple. Just print text and disappear it after 4s.
Below is current source.
const intro1 = document.getElementsByClassName('intro1')[0];
setTimeout(() => {
intro1.classList.remove('fade-in');
intro1.classList.add('fade-out');
}, 3500);
body {
margin: 30px 0;
padding: 0 15px;
}
section {
display: flex;
justify-content: center;
align-items: center;
background-color: aliceblue;
width: 100%;
height: 100%;
font-size: 2rem;
font-weight: 100;
}
span {
text-align: center;
position: absolute;
}
/* Intro animation */
.fade-in {
display: inline-block;
overflow: hidden;
white-space: nowrap;
animation: fadeIn 4s;
}
.fade-out {
animation: fadeOut 1s;
}
#keyframes fadeIn {
from {
width: 0;
}
to {
width: 100%;
}
}
#keyframes fadeOut {
to {
opacity: 0;
}
}
<html>
<head>
<link rel="stylesheet" type="text/css" href="style.css">
</head>
<body>
<main>
<section>
<span class="intro1 fade-in">TEST TEST TEST TEST TEST TEST TEST TEST </span>
</section>
</main>
<script src="src.js"></script>
</body>
</html>
I defined fade-in and fade-out and initialize .intro1's classname to 'fade-in'.
And delay 3.5s with setTimeout, remove class fade-in and add class fade-out to disappear it.
When I start it, text appear and disappear is works fine.
But after text disappear, it shows again like this.
I do not want to show again after text's opacity becomes to 0.
Any solution about this?
Thanks.

You have to add this to fade-out class
.fade-out {
animation: fadeOut 1s;
animation-fill-mode: forwards; // that's what you need to add
}
About animation-fill-mode:
The animation-fill-mode property specifies a style for the target element when the animation is not playing (before it starts, after it ends, or both).
The animation-fill-mode property can have the following values:
none - Default value. Animation will not apply any styles to the element before or after it is executing
forwards - The element will retain the style values that is set by the last keyframe (depends on animation-direction and animation-iteration-count)
backwards - The element will get the style values that is set by the first keyframe (depends on animation-direction), and retain this during the animation-delay period
both - The animation will follow the rules for both forwards and backwards, extending the animation properties in both directions

Related

CSS3 not working when trigered by Javascript

I'm trying to make an splash loading with CSS/HTML/JS, but am having some problems.
The problem is when trying to make the splash screen disappear with a transition effect, but the transition effect isn't applying.
I am sure my JavaScript is work properly, as it appends the new class not-displayed to the div element.
const splash = document.querySelector('.splash');
console.log(splash);
document.addEventListener('DOMContentLoaded', (e) => {
setTimeout(() => {
splash.classList.add('not-displayed');
}, 2000);
});
.splash {
z-index: 100000;
position: fixed;
height: 100vh;
width: 100%;
display: flex;
align-items: center;
justify-content: center;
background-color: #ffff;
}
//all of these code not working
.splash.not-displayed {
z-index: 20;
opacity: 0;
position: fixed;
height: 100vh;
width: 100%;
background-color: #f06c65;
transition: all 0.5298s ease-out;
-webkit-transition: all 0.5298s ease-out;
-moz-transition: all 0.5298s ease-out;
-o-transition: all 0.5298s ease-out;
}
#keyframes fadein {
to {
opacity: 1;
}
}
.fade-in {
opacity: 0;
animation: fadein 1s ease-in forwards;
}
<div class="splash">
<h1 class="fade-in">
hello
</h1>
</div>
You have two things going on here, a transition and an animation. First I removed a lot of unnecessary CSS code to make things clearer.
Your code is working as expected. When the page loads, the "fadein" animation is triggered by the fade-in class. The text "hello" fades in from opacity 0 to opacity 1 over the course of a second, as expected.
Meanwhile, your Javascript triggers on page load and adds the class not-displayed to the outer div after two seconds. This triggers the transition effect, which after half a second applies a red background to the div as it fades the div out, bringing it back to opacity 0.
I'm not sure what specifically you are trying to achieve here, but you have wired up a successful transition and animation effect.
const splash = document.querySelector('.splash');
console.log(splash);
document.addEventListener('DOMContentLoaded', () => {
setTimeout(() => {
splash.classList.add('not-displayed');
}, 2000);
});
.splash.not-displayed {
opacity: 0;
background-color: #f06c65;
transition: all 0.5298s ease-out;
}
.fade-in {
opacity: 0;
animation: fadein 1s ease-in forwards;
}
#keyframes fadein {
to {
opacity: 1;
}
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="splash">
<h1 class="fade-in">
hello
</h1>
</div>
In your code
document.addEventListener('DOMContentLoaded', () => {
setTimeout(() => {
splash.classList.add('not-displayed');
}, 2000);
});
you are adding new class to remove the .splash and then add new class not-displayed
Everything is working just fine, except you have given opacity: 0 to the not-displayed class.
const splash = document.querySelector('.splash');
console.log(splash);
document.addEventListener('DOMContentLoaded', (e) => {
setTimeout(() => {
splash.classList.add('not-displayed');
}, 2000);
});
.splash {
z-index: 100000;
position: fixed;
height: 100vh;
width: 100%;
display: flex;
align-items: center;
justify-content: center;
background-color: #ffff;
}
.not-displayed {
z-index: 20;
/* opacity: 0; */
position: fixed;
height: 100vh;
width: 100%;
background-color: #f06c65;
transition: all 0.5298s ease-out;
-webkit-transition: all 0.5298s ease-out;
-moz-transition: all 0.5298s ease-out;
-o-transition: all 0.5298s ease-out;
}
#keyframes fadein {
to {
opacity: 1;
}
}
.fade-in {
opacity: 0;
animation: fadein 1s ease-in forwards;
}
<div class="splash">
<h1 class="fade-in">
hello
</h1>
</div>
Codepen
You should set the transition to .splash not to .splash.not-displayed

How to stop transforms in a CSS transition

I have set a CSS transition like
transition: all 2s
Then I apply a CSS to change the transform like:
transform: rotate(20deg);
Transition starts.
I want to stop it midway and have it stay there so I can then apply some other JS on it that is application dependent... what that is post-pausing is irrelevant to the question To test, I use:
setTimeout(function() {
...
}, 1000);
One crude way to stop the transition is to set CSS display to 'none'.
Setting transform to 'none' or empty string does not work. The transition goes to the end for transform. Another trick of resetting the CSS to the current one, works for other properties but not for transforms. Setting transition property to none or empty string also does not stop the transition's transform.
Surely there must be some way.
Any suggestion? Preferrably in JQuery
I do not want to use animation.
Why not using animation where you can easily manage the state:
$('button').eq(0).click(function() {
$('.box').css('animation-play-state', 'paused');
});
$('button').eq(1).click(function() {
$('.box').css('animation', 'none');
});
.box {
margin: 50px;
width: 100px;
height: 100px;
background: red;
display:inline-block;
vertical-align:top;
animation: anime 10s forwards;
}
#keyframes anime {
to {
transform: rotate(180deg);
}
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="box">
</div>
<button>Stop</button>
<button>Reset</button>
UPDATE
Here is a way that you can try with transition:
$('button').eq(0).click(function() {
$('.box').addClass('rotate');
});
$('button').eq(1).click(function() {
var e = $('.box').css('transform'); // get the current state
$('.box').css('transform', e); //apply inline style to override the one defined in the class
});
.box {
margin: 50px;
width: 100px;
height: 100px;
background: red;
display:inline-block;
vertical-align:top;
transition: all 10s;
}
.rotate {
transform: rotate(180deg);
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="box">
</div>
<button>start</button>
<button>stop</button>

Trigger opacity transition on mouse in and out

I want to trigger a opacity transition. If an element is hovered by the cursor, the cursor shall fade out, change its background-image and then fade in again. I wanted to achieve that by adding and removing a css class. It's not working, what is wrong?
js fiddle
HTML
<div class="wrapper">
<div class="cursor">
</div>
<div id="grey">
</div>
</div>
CSS
.wrapper {
width: 100%;
height: 100%;
background-color: lightgrey;
padding: 60px;
cursor: none;
}
#grey {
width: 100px;
height: 100px;
background: grey;
}
.cursor {
position: fixed;
width: 20px;
height: 20px;
pointer-events: none;
opacity: 0;
-webkit-transition: opacity .3s; /* Safari */
transition: opacity .3s;
}
.red {
background: red;
opacity: 1;
}
.green {
background: green;
opacity: 1;
}
JS
$('.wrapper').on('mousemove', function(e){
$('.cursor').css('left', e.clientX-10).css('top', e.clientY -10);
if ($.contains($('.wrapper')[0], e.target)){
$('.cursor').removeClass('green').addClass('red');
}else{
$('.cursor').removeClass('red').addClass('green');
}
});
DEMO HERE
Ok, here you go. You need to keep track of 2 things here which you already achieved partially and also wait for fadeOut to complete and add a callback for adding and removing respective class
Whether cursor has entered element
Whether cursor has left element
Below is how you could actually do it.
var entered=false;//global variables to show the position of cursor
var left=false;
$('.wrapper').on('mousemove', function(e){
$('.cursor').css('left', e.clientX-10).css('top', e.clientY -10);
if ($.contains($('.wrapper')[0], e.target)){
if(!entered)
{
//just to do it once and not on every mousemove you need to check here whether
//it has already entered and moving inside the element
entered=true;
left=false;//to check the vice versa operation
$('.cursor').fadeOut('fast',function(){
//callback function after fadeOut completes
$(this).removeClass('green').addClass('red');
}).fadeIn('fast');
}
}else{
if(!left)
{
left=true;
entered=false;
//same goes here too
$('.cursor').fadeOut('fast',function(){
$(this).removeClass('red').addClass('green');
}).fadeIn('fast');
}
}
});
you have to change background color , not opacity ( opacity is always 1 )
CSS
.cursor {
position: fixed;
width: 20px;
height: 20px;
pointer-events: none;
opacity: 0;
-webkit-transition: background-color .3s; /* Safari */
transition: background-color .3s ;
}
.red {
background-color: red;
opacity: 1;
}
.green {
background-color: green;
opacity: 1;
}
So you said your question is wrong, it is "no, I just made it easier for hier, in reality it is an background image" - so you transition between two background-images.
Here is how you do it:
You can not do it with CSS transition in ONE element/div
You will have to make two divs wich one background each
Increase the zIndex of the div you want to fade out in by one
Fade out div, while the new div stays at opacity: 1

CSS3 Animation: Forwards fill not working with position and display on Safari

So, I have created a CSS3 animation that is supposed to fade out an element by setting its opacity from 1 to 0 and at the last frames change the position to absolute and display to none. But on Safari it will only maintain the opacity, position and display are not set to the final values.
#-webkit-keyframes impressum-fade-out {
0% {
opacity: 1;
display: block;
position: relative;
}
99% {
opacity: 0;
position: relative;
}
100% {
opacity: 0;
display: none;
position: absolute;
}
}
It seems to work on Chrome but not on Safari (I tried version 8). Apparently, position and display do not work properly with animation-fill-mode: forwards...
JSFiddle: http://jsfiddle.net/uhtL12gv/
EDIT For Bounty: I am aware of workarounds with Javascript and transitionend events. But I am wondering why Browsers lack support for this? Does the specification state that fillmode forwards doesnt apply to some attributes like position or is this a bug in the browsers? Because I couldnt find anything in the bug trackers.. If anybody has some insight, I would really appreciate it
As Suggested in the comments, you can adjust the height.
EDIT: Animation Reference Links Added.
Display property is not animatable.
Position property is not
animatable.
List of all CSS properties and if and how they are
animatable.
$('.block').click(function() { $(this).toggleClass('active') });
#-webkit-keyframes impressum-fade-out {
0% {
opacity: 1;
}
99% {
opacity: 0;
}
100% {
opacity: 0;
height:0;
}
}
.block {
width: 100px;
height: 100px;
background: blue;
}
.block2 {
width: 100px;
height: 100px;
background: red;
}
.block.active {
-webkit-animation-name: impressum-fade-out;
animation-name: impressum-fade-out;
-webkit-animation-duration: 500ms;
animation-duration: 500ms;
-webkit-animation-fill-mode: forwards;
animation-fill-mode: forwards;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<div class="block"></div>
<div class="block2"></div>
I would suggest you the cross-browser solution based on CSS3 Transitions and transitionend event:
JSFiddle
$('.block').one('click', function() {
var $this = $(this);
$this.one('webkitTransitionEnd transitionend', function() {
$this.addClass('block_hidden');
$this.removeClass('block_transition');
});
$this.addClass('block_transition');
});
.block {
width: 100px;
height: 100px;
background: blue;
-webkit-transition: opacity 0.5s;
transition: opacity 0.5s;
}
.block_2 {
background: red;
}
.block_transition {
opacity: 0;
}
.block_hidden {
display: none;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<div class="block"></div>
<div class="block block_2"></div>

Fade effect attribute/function in javascript custom script?

I need to add a fade effect on my javascript function
Javascript
<script type="text/javascript">
window.onload=function() {
loginBtn = document.getElementById('loginBtn');
fader = document.getElementById('login_fader');
login_box = document.getElementById('login_box');
closebtn = document.getElementById('closelogin');
loginBtn.onclick=function(){
fader.style.display = "block";
login_box.style.display = "block";
}
closebtn.onclick=function() {
fader.style.display = "none";
login_box.style.display = "none";
}
}
</script>
HTML
<div id="login_fader"> </div>
<div id="login_box">
<table class="table-login">
<th>Login or Register</th>
<th><a id="closelogin">X</a></th>
<tr>
<td>Login</td>
<td>Register</td>
</tr>
</table>
</div>
CSS
<style type="text/css">
#loginBtn {
float: right;
margin-top: -6%;
cursor:pointer;
}
#login_fader {
background: black;
opacity: .5;
-moz-opacity: .5;
-filter: alpha(opacity=50);
position: fixed;
top: 0;
left: 0;
height: 100%;
width: 100%;
z-index: 5;
display: none;
}
#login_box {
width: 320px;
height: 200px;
border: 1px white solid:
background: #5a5a5a;
position: fixed;
top: 25%;
left: 35%;
z-index: 10;
display: none;
}
.table-login {
background: #FFF;
border-radius: 8px;
box-shadow: 0 0 5px 2px;
opacity: 0.95;
}
#closelogin {
float:right;
cursor:pointer;
}
</style>
Js fiddle
http://jsfiddle.net/U3n4j/
I have tried using the transition properties from css3 and tried applying both to login_box and login_fader.
I found some functions on the net but don't know how to link them to my already made function and i was thinking if there are any properties directly that i can link them to my function.
Proper way to fade in a static box in css3 and js 1.7 ++
This is a example using only webkit and modern javascripts classList.add
but you can add the other prefixes.-moz,-ms,-o
in this example i show only the animation.
css
.box{
width:100%;
height:100%;
position:fixed;
left:0;top:-100%;/*notice TOP -100%*/
opacity:0;
-webkit-transition:opacity 700ms ease,top 0 linear 700ms;/*notice TOP delay*/
background-color:rgba(0,0,0,0.7);
}
.box.active{
-webkit-transition:opacity 700ms ease,top 0 linear 0;
/*top transition not needed but could help to understand*/
top:0;
opacity:1;
}
js
function show(){
box.classList.add('active');
}
function hide(){
box.classList.remove('active');
}
var box=document.getElementsByClassName('box')[0],
button=document.getElementsByTagName('button')[0];
button.addEventListener('click',show,false);
box.addEventListener('click',hide,false);
DEMO
http://jsfiddle.net/RAu8Q/ not working anymore
http://jsfiddle.net/RAu8Q/17/ new syntax 10-2015
if you have any questions just ask.
I can't tell exactly what effect you're trying to achieve, but if you're going to use CSS transitions, then you need to be transitioning between numerical properties. I.e., you can't expect a fade to occur simply by transitioning from display:block to display:none. You'd want to use opacity instead.
First of all, don't try to use css transitions in conjunction with display property, that won't work! Instead, try transitioning other properties. Let's take opacity for instance (we'll simulate display: none/block functionality by setting opacity to 0/1)
Secondly, set the start value for opacity to 0 on the desired HTML element (the one you'd like to animate). Specify which property to animate (opacity in our case):
transition: opacity 1s;
-moz-transition: opacity 1s;
-webkit-transtion: opacity 1s;
When the login button is clicked, set opacity to 1:
loginBtn.onclick=function() {
fader.style.opacity = 1;
login_box.style.opacity = 1;
}
When the close button is clicked, set opacity back to 0:
closebtn.onclick=function() {
fader.style.opacity = 0;
login_box.style.opacity = 0;
}
Link to fiddle.
I believe that what you want to do needs css animations. So just create an animation class that fades out the target element and apply it after the user logs in.
#keyframes fadeOut {
from: {
opacity:1;
},
to: {
opacity:0;
}
}
then use apply it on the class
.fadeOut {
animation:fadeOut 0.25s forwards;
}
EXAMPLE
http://jsfiddle.net/zgPrc/

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