Animating a Pseudo Class - javascript

I'm attempting to achieve a particular effect onclick. I've created an angled or razor-blade style div using a parent div-element, and a pseudo-element :after (see snippet below). What I'm trying to make happen is when the user clicks on the parent element, the skew property I have set up, shifts to a different skewed angle.
My problem is what regardless of whether I call the parent or the pseudo, onclick I cannot get the animation to work. Can anyone point me in the right direction?
$(document).ready(function() {
$('.slantedDiv').click(function() {
$('.slantedDiv .slantedDiv:after').toggleClass('active');
});
});
* {
padding: 0;
margin: 0;
}
.slantedDiv {
position: relative;
width: 100%;
height: 300px;
background-color: yellow;
}
.slantedDiv:after {
position: absolute;
width: 100%;
height: 100%;
content: '';
background: inherit;
top: 0;
right: 0;
bottom: 0;
left: 0;
transform-origin: top left;
transform: skewY(10deg);
transition: all .3s ease-in-out;
}
.active {
transform-origin: top right;
transform: skewY(-10deg);
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="slantedDiv"></div>

The issue is to do with the selector in the click handler. Firstly, the element is just .slantedDiv, so repeating the class will not match any elements. You can avoid that issue entirely by just using the this reference in the jQuery object. Secondly, and more importantly, jQuery cannot select pseudo elements so including :after will not find anything.
Instead you need to toggle() the activeclass on the .slantedtDiv directly and then use the :after in your CSS rule based on the presence of the active class, something like this:
$(document).ready(function() {
$('.slantedDiv').click(function() {
$(this).toggleClass('active');
});
});
* {
padding: 0;
margin: 0;
}
.slantedDiv {
position: relative;
width: 100%;
height: 300px;
background-color: yellow;
}
.slantedDiv:after {
position: absolute;
width: 100%;
height: 100%;
content: '';
background: inherit;
top: 0;
right: 0;
bottom: 0;
left: 0;
transform-origin: top left;
transform: skewY(10deg);
transition: all .3s ease-in-out;
}
.slantedDiv.active:after {
transform-origin: top right;
transform: skewY(-10deg);
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="slantedDiv"></div>

Related

CSS transition not working with classList.add

Good, I’ve been an hour and I’m going crazy (I’m new)
I have a button that when pressed shows a div . Fixed sidemenu, this occupies 100% high and wide and contains two divs, one that does black background with some transparency and occupies everything and a white side menu.
I want that when you activate the open button or the close button or touch the black background transparently, the background and menu appear or disappear but with a transition and I do not know why it does not work, the menu with a side transition and the menu going from 0 to . 2 of opacity or vice versa when closed
See if anyone can explain why it does not work, thank you very much in advance :)
const sidemenu = document.getElementById('sidemenu')
const sidemenuContent = document.getElementById('sidemenu__content')
const abrirSidemenu = document.getElementById('sidemenu__open')
const cerrarSidemenu = document.getElementById('sidemenu__close')
const sidemenubg = document.getElementById('fondo-modal')
abrirSidemenu.addEventListener('click', () => {
sidemenu.classList.add('show-sidemenu')
sidemenuContent.classList.add('sidemenuContent__animation')
sidemenubg.classList.add('opacity__animation')
})
cerrarSidemenu.addEventListener('click', () => {
sidemenu.classList.remove('show-sidemenu')
sidemenuContent.classList.remove('sidemenuContent__animation')
sidemenubg.classList.remove('opacity__animation')
})
sidemenubg.addEventListener('click', () => {
sidemenu.classList.remove('show-sidemenu')
sidemenuContent.classList.remove('sidemenuContent__animation')
sidemenubg.classList.remove('opacity__animation')
})
.sidemenu {
display: none;
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
}
.fondo-modal {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
z-index: 5;
background-color: black;
opacity: .0;
transition: .5s;
}
.sidemenu__content {
position: fixed;
top: 0;
left: -350px;
width: 350px;
height: 100%;
background-color: white;
z-index: 10;
padding: 5rem 2rem 0;
overflow-y: auto;
transition: .5s;
}
.show-sidemenu {
display: grid;
}
.sidemenuContent__animation {
left: 0;
}
.opacity__animation {
opacity: .2;
}
<div class="topmenu__left">
<button id="sidemenu__open">OPEN</button>
<div class="sidemenu" id="sidemenu">
<div class="fondo-modal" id="fondo-modal"></div>
<div class="sidemenu__content" id="sidemenu__content">
<button id="sidemenu__close">CLOSE</button>
</div>
</div>
The major issue is that you're trying to transition the display attribute, which cannot be transitioned: https://www.w3schools.com/cssref/pr_class_display.asp So instead, we'll define your display attribute as you like but we'll add the opacity and visibility attributes and make those our goal for transition. We'll also specify a timing operation with linear which you can change at your discretion (see: https://developer.mozilla.org/en-US/docs/Web/CSS/transition-timing-function) and we'll transition everything for the sake of keeping it simple since you don't have any real need for specificity here. Hope that helps, let me know if you have any questions :)
Edit: added a light-blue to the body just so you can see everything happening but you can take that out obviously.
const sidemenu = document.getElementById('sidemenu');
const sidemenuContent = document.getElementById('sidemenu__content');
const abrirSidemenu = document.getElementById('sidemenu__open');
const cerrarSidemenu = document.getElementById('sidemenu__close');
const sidemenubg = document.getElementById('fondo-modal');
abrirSidemenu.addEventListener('click', () => {
sidemenu.classList.add('show-sidemenu');
sidemenuContent.classList.add('sidemenuContent__animation');
sidemenubg.classList.add('opacity__animation');
});
cerrarSidemenu.addEventListener('click', () => {
sidemenu.classList.remove('show-sidemenu');
sidemenuContent.classList.remove('sidemenuContent__animation');
sidemenubg.classList.remove('opacity__animation');
});
sidemenubg.addEventListener('click', () => {
sidemenu.classList.remove('show-sidemenu');
sidemenuContent.classList.remove('sidemenuContent__animation');
sidemenubg.classList.remove('opacity__animation');
});
body {
background-color: lightblue;
}
.sidemenu {
display: grid;
visibility: hidden;
position: fixed;
top: 0;
left: 0;
opacity: 0;
width: 100%;
height: 100%;
transition: all 0.5s linear;
}
.fondo-modal {
display: block;
position: absolute;
visibility: hidden;
top: 0;
bottom: 0;
left: 0;
right: 0;
z-index: 5;
background-color: black;
opacity: 0;
transition: all 0.5s linear;
}
.sidemenu__content {
display: block;
position: fixed;
visibility: hidden;
top: 0;
left: -350px;
width: 350px;
height: 100%;
background-color: white;
z-index: 10;
padding: 5rem 2rem 0;
overflow-y: auto;
transition: all 0.5s linear;
}
.show-sidemenu {
visibility: visible;
opacity: 1;
left: 0;
transition: all 0.5s linear;
}
.sidemenuContent__animation {
visibility: visible;
left: 0;
transition: all 0.5s linear;
}
.opacity__animation {
visibility: visible;
opacity: 0.2;
transition: all 0.5s linear;
}
<div class="topmenu__left">
<button id="sidemenu__open">OPEN</button>
<div class="sidemenu" id="sidemenu">
<div class="fondo-modal" id="fondo-modal">modal</div>
<div class="sidemenu__content" id="sidemenu__content">
<button id="sidemenu__close">CLOSE</button>
</div>
</div>
</div>

Stuck on trying to replicate a certain CSS-Transition (CTA-Button that moves to the bottom corner of the page when scrolling down and gets fixed)

So here is a simple fiddle (http://jsfiddle.net/t1xywroc/2/) I created to show you the animation I'm trying to replicate (from this website: https://paperpillar.com/).
I'm still fairly new to Javascript/Jquery and have only been doing HTML and CSS for a couple months.
The problem about my animation is that (as far I know) there is no transition from an absolute position to a fixed position, which I believe causes that small jump, right after triggering the animation (or transition if you will). The second problem is, that the content of the ::before element can't be transitioned either. How can I fix these things using jQuery?
I tried to get it work by using mostly CSS but I keep coming across new problems. I guess it's inevitable to use JavaScript, which is what I need help with. I'd really appreciate it.
Note: not a native speaker.
HTML
<div class="section">
<div class="button"></div>
</div>
CSS
.section {
height: 2000px;
width: auto;
}
.button {
position: absolute;
transform: translateX(50%);
right: 50%;
display: inline-block;
color: white;
line-height: 60px;
height: 60px;
width: auto;
padding-left: 25px;
padding-right: 25px;
background-color: blue;
border-radius: 25px;
vertical-align: middle;
top: 15rem;
}
.button::before{
content: 'Button Text';
}
.floating {
padding-left: 0px;
padding-right: 0px;
position: fixed;
right: 15px;
top: calc(100vh - 120px);
transform: none;
height: 80px;
width: 80px;
transition: all 1.5s ease-in-out;
background-color: red !important;
border: none;
border-radius: 50%;
justify-content: center;
text-align: center;
}
.floating::before{
content:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='24px' height='24px' fill='white'><path d='M7.41,8.58L12,13.17L16.59,8.58L18,10L12,16L6,10L7.41,8.58Z' /></svg>");
}
JS
$(document).ready(function() {
$(window).on('scroll', function() {
if ($(window).width() <= 768) {
var scrollTop = $(this).scrollTop();
$('.button').each(function() {
var topDistance = $(this).offset().top;
if ((topDistance - 30) < scrollTop) {
$(this).addClass('floating');
// Haven't put much thought into this part yet
} else if ((topDistance - 30) >= scrollTop){
}
});
}
});
});
A couple of problems have been highlighted in the question: the 'jump' when the transition moves between absolute and fixed and the fact that pseudo elements' content can not be transitioned.
To get round the absolute to fixed jump problem we can set the button to fixed as soon as the transition is to start and then transition. This is possible by introducing CSS animations rather than transitions.
To appear to transition between content we use before pseudo element to hold the initial text (as in the code given) and introduce an after pseudo element that holds the svg. To give the appearance of transitioning between the two we animate opacity.
Note: in the website which is to be emulated the button initially has a white background over the page's white background. This means the change in shape as the initial button fades away is less obvious. With a contrasting blue background the change in shape is much more obvious. That may or may not be the effect required.
Here's a snippet with animations instead of transitions and moving to fixed immediately the animation starts.
$(document).ready(function() {
$(window).on('scroll', function() {
if ($(window).width() <= 2500) {
var scrollTop = $(this).scrollTop();
$('.button').each(function() {
var topDistance = $(this).offset().top;
if ((topDistance - 30) < scrollTop) {
$(this).addClass('floating');
} else if ((topDistance - 100) >= scrollTop){
}
});
}
});
});
.section {
height: 2000px;
width: auto;
position: relative;
}
.button, .button::before, .button::after {
animation-duration: 1.5s;
animation-iteration-count: 1;
animation-fill-mode: forwards;
animation-timing-function: ease-in-out;
position: absolute;
}
.button {
transform: translateX(50%);
right: 50%;
line-height: 60px;
height: 60px;
width: auto;
color: transparent; /* do this to ensure the button has dimensions so it can be clicked */
display: inline-block;
vertical-align: middle;
top: 15rem;
}
.button.floating {
position: fixed;
top: 30px;
animation-name: floatdown;
}
.button::before {
content: 'Button\00a0 Text';
opacity: 1;
color: white;
line-height: 60px;
height: 60px;
width: auto;
padding-left: 25px;
padding-right: 25px;
background-color: blue;
border-radius: 25px;
}
.button::after {
content: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='24px' height='24px' fill='white'><path d='M7.41,8.58L12,13.17L16.59,8.58L18,10L12,16L6,10L7.41,8.58Z' /></svg>");
opacity: 0;
padding-left: 0px;
padding-right: 0px;
height: 80px;
width: 80px;
margin-left: -50%;
background-color: red;
border: none;
border-radius: 50%;
justify-content: center;
text-align: center;
}
div.button.floating::before {
animation-name: fadeout;
}
div.button.floating::after {
animation-name: fadein;
}
#keyframes fadeout {
100% {
opacity: 0;
}
}
#keyframes fadein {
100% {
opacity: 1;
}
}
#keyframes floatdown {
100% {
top: calc(100vh - 120px);
right: 95px; /* 80+15px */
}
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="section">
<div class="button">Button text</div>
</div>
Note also that if you want the downarrow to fill the circle more you could put it as a background-image with size contain rather than as content.

Css transform animation from right to left

I am working with a navigation bar that has slides a menu from right to left.
With my code, when the user picture is being clicked, it will show the menu.
So when it is loaded, menu is hidden and when it is clicked will be showed. I used to add class hidden and show to toggle to menu.
$(document).ready(function(){
$(".img-profile").click(function(){
$(".menu-wrapper").addClass("show");
});
$(".menu-bg").click(function(){
$(".menu-wrapper").removeClass("show");
});
});
CSS
.show{
display: inline-block !important;
}
.hidden{
display: none;
}
The problem is it's not animating even if I added the transition: all 0.2s linear 0s and the transform from 250px to 0
.menu-wrapper > .login-menu{
background-color: #fff;
height: 100%;
overflow-y: auto;
position: fixed;
right: 0;
width: 250px;
z-index: 5;
padding: 30px 20px;
text-align: center;
transition: all 0.2s linear 0s;
transform: translateX(0px);
}
.menu-wrapper .show > .login-menu{
transform: translateX(250px);
}
Also, I want to animate it on menu-close from right to left.
My full code is at JSFIDDLE
Changing the display CSS attribute does not trigger animations. Use the visibility attribute instead. This one triggers animations.
If you have good reason to use display (which is completely possible), you'll need to set the display attribute first to show the element, but keep the visibility on hidden. Set the visibility: visible attribute right after and the animation will be triggered.
Edit: I had a look at your fiddle. Don't use the .hidden class, because bootstrap sets display:none on .hidden elements. Just use the .show class alone, putting visibility:visible in the show class, and setting visibility:hidden on the .menu-wrapper element. Remove all the display:none lines in your CSS and you'll be fine.
Try to do it with this trick.
<header class="header">
<div class="container">
<a class="logo" href="/"></a>
<div class="login">
<div class="img-profile" style="background-image: url('http://graph.facebook.com/4/picture?width=100&height=100')"></div>
<div class="login-menu">
<div class="img-profile" style="background-image: url('http://graph.facebook.com/4/picture?width=100&height=100')"></div>
<p>Mark Zuckerberg</p>
<button type="button" class="btn btn-danger btn-block">Logout</button>
</div>
<div class="menu-bg"></div>
</div>
</div>
.header{
width: 100%;
height: 50px;
background: #fff;
border-bottom: 2px solid #ececec;
}
.header > .container{
height: 100%;
position: relative;
}
.logo {
background: url("http://d12xrwn9fycdsl.cloudfront.net/static/images/sv_logo.png") no-repeat scroll center center / contain ;
display: inline-block;
width: 23rem;
height: 100%;
}
.select-lang {
display: inline-block;
position: absolute;
top: 15px;
}
.login{
position: absolute;
right: 0;
top: 0;
}
.img-profile{
background: no-repeat scroll center center / contain;
position: relative;
top: 3px;
border-radius: 40px;
width: 40px;
height: 40px;
display: block;
margin: auto;
}
.login > .menu-wrapper{
display: none;
position: fixed;
left: 0;
top: 0;
bottom: 0;
z-index: 5;
height: 100%;
width: 100%;
}
.login-menu{
background-color: #fff;
height: 100%;
overflow-y: auto;
position: fixed;
top: 40px;
right: -250px;
width: 250px;
z-index: 5;
padding: 30px 20px;
text-align: center;
transition: all 0.2s linear 0s;
}
.show{
right: 0;
}
.hidden{
right: -250px;
}
.login-menu > .img-profile {
border-radius: 70px;
height: 70px;
width: 70px;
}
.login-menu > p {
font-weight: bold;
margin: 10px 0 20px;
}
.menu-wrapper > .menu-bg{
background-color: rgba(0, 0, 0, 0.6);
height: 100%;
left: 0;
position: absolute;
top: 0;
width: 100%;
}
$(document).ready(function(){
$(".img-profile").click(function(){
$(".login-menu").addClass("show");
});
$(".img-profile").click(function(){
$("body").removeClass("show");
});
});
Take a look here https://jsfiddle.net/SkiWether/KFmLv/
this is working for me
$(".myButton").click(function () {
// Set the effect type
var effect = 'slide';
// Set the options for the effect type chosen
var options = { direction: $('.mySelect').val() };
// Set the duration (default: 400 milliseconds)
var duration = 500;
$('#myDiv').toggle(effect, options, duration);
});

RotateY transition not working properly

When i hover once, transition is proper, but on second time, transition becomes wierd, as if the perspective: 800px starts working after transition has taken place.
Please also tell how can i set rotation about an edge except center.
I know about transform-origin but nothing such as transform-axis.
I want that when i hover over the , these images should open like a window.
var left=document.getElementById("left");
var right=document.getElementById("right");
function curtain() {
left.style.transform="rotateY(70deg)";
right.style.transform="rotateY(-70deg)";
}
function back() {
left.style.transform="rotateY(0deg)";
right.style.transform="rotateY(0deg)";
}
#animate{
width: 400px;
height: 300px;
margin: auto;
position: relative;
perspective: 800px;
}
img {
width: 100%;
}
#left {
position:absolute;
top: 0;
right: 50%;
padding: 0;
margin: 0;
width: 50%;
transition: transform 0.5s;
}
#right {
position: absolute;
top: 0;
right: 0%;
padding: 0;
margin: 0;
width: 50%;
transition: transform 0.5s;
}
<html>
<head>
<link href="style/style.css" rel="stylesheet">
</head>
<body>
<div id="animate" onmouseover="curtain()" onmouseout="back()">
<div id="left"><img src="https://upload.wikimedia.org/wikipedia/commons/thumb/e/e6/Ariyunda.JPG/200px-Ariyunda.JPG"></div>
<div id="right"><img src="http://www.cs.cornell.edu/courses/cs3110/2009sp/hw/ps4/beach_original.png"></div>
</div>
<script src="script/script.js"></script>
</body>
</html>
There seems to be an issue with perspective and the onmouseout. back() (in onmouseout) and curtain() (in onmouseover) are called quite inconsistently. onmouseout is called whenever the mouse moves outside the element (#animate in this case) or its children (the images). The children are animated - they move - and the onmouseout is thereby called multiple times.
I wouldn't recommend onmouseover / onmouseout for this - instead I would use CSS :hover.
That aside, transform-origin defines the center of rotation.
#animate:hover #left {
transform: rotateY(70deg);
}
#animate:hover #right {
transform: rotateY(-70deg);
}
#animate {
width: 400px;
height: 300px;
margin: auto;
position: relative;
perspective: 800px;
}
img {
width: 100%;
}
#left {
position: absolute;
top: 0;
right: 50%;
padding: 0;
margin: 0;
width: 50%;
transition: transform 0.5s;
transform-origin: left;
}
#right {
position: absolute;
top: 0;
right: 0%;
padding: 0;
margin: 0;
width: 50%;
transition: transform 0.5s;
transform-origin: right;
}
<div id = 'animate'>
<div id = 'left'><img src = 'https://upload.wikimedia.org/wikipedia/commons/thumb/e/e6/Ariyunda.JPG/200px-Ariyunda.JPG'></div>
<div id = 'right'><img src = 'http://www.cs.cornell.edu/courses/cs3110/2009sp/hw/ps4/beach_original.png'></div>
</div>
I don't know the origin of the problem, but it works ok if you are using CSS hover instead of JS hover.
And the transform origin is the way to go, it does what your wanted transform-axis would do.
#animate{
width: 400px;
height: 300px;
margin: auto;
position: relative;
perspective: 800px;
}
img {
width: 100%;
}
#left {
position:absolute;
top: 0;
right: 50%;
padding: 0;
margin: 0;
width: 50%;
transition: transform 0.5s;
transform: rotateY(0deg);
transform-origin: left center;
}
#right {
position: absolute;
top: 0;
right: 0%;
padding: 0;
margin: 0;
width: 50%;
transition: transform 0.5s;
transform: rotateY(0deg);
transform-origin: right center;
}
#animate:hover #left {
transform: rotateY(70deg);
}
#animate:hover #right {
transform: rotateY(-70deg);
}
<div id="animate" onmouseover="curtain()" onmouseout="back()">
<div id="left"><img src="https://upload.wikimedia.org/wikipedia/commons/thumb/e/e6/Ariyunda.JPG/200px-Ariyunda.JPG"></div>
<div id="right"><img src="http://www.cs.cornell.edu/courses/cs3110/2009sp/hw/ps4/beach_original.png"></div>
</div>

Zoom-out Effect Issues

I'm trying to get a full page (with nav at the top, but I don't mind the background going underneath it) zoom-out effect. However, I want it to execute once all assets are loaded, as it is the first thing seen when the page is loaded. So I wouldn't want it being executed early otherwise it may not even be seen or just the end of it would be caught.
I have seen several examples but I've had problems with them:
Animating (with jQuery) the background-size property - this made the animation 'choppy' and I read somewhere it was probably because it was being run on the CPU rather than the GPU.
Demo: https://jsfiddle.net/njj43kz4/
HTML
<body>
<div id="front"></div>
</body>
CSS
html {
width: 100%;
height: 100%;
}
body {
height: 100%;
width: 100%;
margin: 0px;
padding: 0px;
}
#front {
position: relative;
top: 0;
width: 100%;
height: 100%;
opacity: 1;
background: #222 url("http://melleum.com/data/uploads/1/262040-1920x1080-wallpaper.jpg") no-repeat center center;
background-size: 110%;
}
JavaScript
$('#front').animate({ backgroundSize: '100%' }, 1000);
Using a setTimeout as shown in this previous question's answer: Slight background zoom on DOM load? - this worked smoothly, however I cannot get it working when I change the width and height values to 100%. The image starts oversized before zooming out, but the oversized view is shown. I want the fixed 100%x100% view, and no extra scaling visible. I tried overflow: hidden but that isn't hiding the overflow. You can see this is happening as the scrollbars are appearing and ruining the effect.
Demo: http://jsfiddle.net/eHAuh/15/
HTML
<body>
<div id="front" class="scaled"></div>
</body>
CSS
html {
width: 100%;
height: 100%;
}
body {
width: 100%;
height: 100%;
}
#front {
position: relative;
top: 0;
width: 100%;
height: 100%;
opacity: 1;
background: #222 url("http://melleum.com/data/uploads/1/262040-1920x1080-wallpaper.jpg") no-repeat center center;
background-position: 50% 50%;
overflow: hidden;
}
.animatable {
-webkit-transition:all 750ms ease-out;
transition:all 750ms ease-out;
}
.scaled {
-webkit-transform:scale(1.2);
transform:scale(1.2);
}
JavaScript
$(document).ready(function () {
$('#front').attr('class', 'animatable');
setTimeout(function () {
$('#front').removeClass('animatable');
}, 1000)
});
Any help would be great, and I hope the layout of this question is ok. I couldn't work out how to indent paragraphs without turning them into code indents. Thanks for reading and have a nice day.
Edit 1: The way this will execute when loaded is because the jQuery/JavaScript is in the $(window).load.
Edit 2: There was an answer suggesting to use keyframes, however these do not support IE9 and this would be preferable.
You can do it with css #keyframes if you want using scale
I have used pseudo class for adding background
/** after page has loaded*/
$(window).bind('load', function() {
$('#front').addClass('active')
})
html {
width: 100%;
height: 100%;
}
body {
height: 100%;
width: 100%;
margin: 0px;
padding: 0px;
}
#front {
position: relative;
top: 0;
width: 100%;
height: 100%;
opacity: 1;
overflow: hidden;
}
#front:after {
content: '';
width: 100%;
height: 100%;
position: absolute;
background: #222 url("http://melleum.com/data/uploads/1/262040-1920x1080-wallpaper.jpg") no-repeat center center;
background-size: cover;
transform: scale(2);
}
#front.active:after {
animation: animation 5s;
/* change the value 5s to what you want */
animation-fill-mode: forwards;
/* added so that it doesn't return to its original state which is scale(2)*/
}
#keyframes animation {
0% {
transform: scale(2);
}
100% {
transform: scale(1)
}
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<div id="front"></div>
As per your requirements it looks like you require this
/** after page has loaded*/
$(window).bind('load', function() {
$('#front').animate({
width: '100%',
height: '100%'
}, 5000);
})
html {
width: 100%;
height: 100%;
}
body {
height: 100%;
width: 100%;
margin: 0px;
padding: 0px;
overflow: hidden;
}
#front {
position: relative;
top: 0;
width: 200%;
height: 200%;
opacity: 1;
background: #222 url("http://melleum.com/data/uploads/1/262040-1920x1080-wallpaper.jpg") no-repeat center center;
background-size: cover;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<div id="front"></div>
in css change
#front
position: fixed;
or for body add
overflow: hidden;

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