Sliding and fading a div element - javascript

I am trying to animate a div element (slide and fade) with a button click. At first, the element is not visible to a user. When the button is clicked, it will slide to right and fade in. Once the button is clicked again, it will slide to left and fade out. I come up with two solutions, with css and with JQuery.
In the first one, I used JQuery. You can find the example in this JSFiddle 1.
HTML
<button id="my-button">Click me!</button>
<div id="my-modal"></div>
CSS
#my-modal {
opacity: 1;
position: fixed;
top: 50px;
left: 0;
left: -250px;
width: 250px;
height: 100%;
background-color: red;
}
JQuery
$("#my-button").click(function () {
var $modal = $("#my-modal");
$modal.stop(true, true).animate({
left: "toggle",
opacity: "toggle"
}, 1000);
});
Here, everything seems working but it does directly opposite of what I want. It first fades out, and with the second click, it fades in. It is because that the opacity of the element is 1, but if I turn it to 0, nothing happens.
Secondly, I tried to do that with css animation by using key-frames (changing opacity from 0 to 1) but it has also problem. It starts the animation exactly the way I want. However, when I click the button again, it disappears immediately. Here is the JSFiddle 2.
HTML
<button id="my-button">Click me!</button>
<div id="my-modal"></div>
CSS
#my-modal {
opacity: 0;
position: fixed;
top: 50px;
left: 0;
left: -250px;
width: 250px;
height: 100%;
background-color: red;
-moz-transition: all 1s ease;
-webkit-transition: all 1s ease;
-o-transition: all 1s ease;
transition: all 1s ease;
}
.move-my-modal {
-moz-transform: translate(250px, 0px);
-webkit-transform: translate(250px, 0px);
-ms-transform: translate(250px, 0px);
-o-transform: translate(250px, 0px);
}
.animate-opacity {
-webkit-animation: toggle-opacity 1s ease;
-moz-animation: toggle-opacity 1s ease;
-o-animation: toggle-opacity 1s ease;
animation: toggle-opacity 1s ease;
-webkit-animation-fill-mode: forwards;
}
#-webkit-keyframes toggle-opacity {
0% {
opacity: 0;
}
100% {
opacity: 1;
}
}
#-moz-keyframes toggle-opacity {
0% {
opacity: 0;
}
100% {
opacity: 1;
}
}
#-o-keyframes toggle-opacity {
0% {
opacity: 0;
}
100% {
opacity: 1;
}
}
#keyframes toggle-opacity {
0% {
opacity: 0;
}
100% {
opacity: 1;
}
}
JQuery
$("#my-button").click(function () {
var $modal = $("#my-modal");
$modal.toggleClass("move-my-modal");
$modal.toggleClass("animate-opacity");
});
To this end, I have these questions;
1) What are the problems with these two approaches? Is there something that I missed or forgot to use? How can I correct them to meet the requirements that I mentioned at the beginning.
2) Which one is the better way to make this action? Is there any cons or pros of these approaches?
3) Is there any other way to make this action? I am new on this area and I might not notice a simpler way.

You can toggle an .active class to the element and use CSS transitions.
This way, if the browser is old enough to not support animations, it will still work but it won't slow down computers that do not handle animations well.
$("#my-button").click(function () {
$("#my-modal").toggleClass('active');
});
#my-modal.active {
opacity: 1;
left: 0;
}
$("#my-button").click(function () {
$("#my-modal").toggleClass('active');
});
#my-modal {
opacity: 0;
position: fixed;
top: 50px;
left: -250px;
width: 250px;
height: 100%;
background-color: red;
transition: all 1s linear;
}
#my-modal.active {
opacity: 1;
left: 0;
}
<button id="my-button">Click me!</button>
<div id="my-modal"></div>
<!-- jQuery -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

Related

Image won't stay visible for hover effect

Hello and thank you in advance for reading my question.
GOAL: Set image so that once it's scrolled into view it transitions smoothly into a set position - but still reacts to :hover. Using #keyframes and a little JavaScript, I set the image to opacity: 0 and it's final opacity to opacity: .85. Then I added a hover effect in CSS to make it's opacity: 1
The issue is once it's finished with it's transition - it disappears - reverting to it's original opacity which is zero. I managed to make it freeze at .85 with animation-fill-mode: forwards, rather than animation-fill-mode: none, but then it won't respond to :hover
And here's a test snippet of the problem in action:
let observer_img = new IntersectionObserver(updates => {
updates.forEach(update => {
if (update.isIntersecting) {
update.target.classList.add('shift_frame_center_img');
} else {
update.target.classList.remove('shift_frame_center_img');
}
});
}, { threshold: 0 });
[...document.querySelectorAll('.features-img-wrapper img')].forEach(element => observer_img.observe(element));
body {
width: 100%;
height: 100vh;
background-color: lightgrey;
}
/* CHILD */
.features-img-wrapper img {
width: 10rem;
display: block;
margin-left: auto;
margin-right: auto;
margin-top: 8rem;
opacity: 0;
transition: all .5s;
}
/* APPEND-CHILD */
.shift_frame_center_img {
animation: center_img 1s 0.5s none;
}
/* CHILD ON HOVER */
.features-img-wrapper img:hover {
opacity: 1;
transform: scale(1.035);
}
/* KEYFRAMES */
#keyframes center_img {
0% {
transform: translateY(20rem);
}
100% {
transform: translateY(0);
opacity: .85;
}
}
<body>
<div class="features-img-wrapper">
<img src="https://synapse.it/wp-content/uploads/2020/12/test.png">
</div>
</body>
If I could get a hand with this that would be wonderful, I'm a bit of a beginner and have already spent a few hours on this, all feedback welcome. Thank you very much.
Solution 1
To understand why the hover effect was not working with the animation-fill-mode: forwards, read this answer.
You can fix that by adding !important property to the hover styles:
.features-img-wrapper img:hover {
opacity: 1 !important;
transform: scale(1.035) !important;
}
The problem, in this case, is that the transition will not work for hover.
Solution 2
You could remove the animation entirely and add the final state styles to the shift_frame_center_img class.
But you would still need to use the !important property because of the CSS Specificity.
let observer_img = new IntersectionObserver(updates => {
updates.forEach(update => {
if (update.isIntersecting) {
update.target.classList.add('shift_frame_center_img');
} else {
update.target.classList.remove('shift_frame_center_img');
}
});
}, { threshold: 0 });
[...document.querySelectorAll('.features-img-wrapper img')].forEach(element => observer_img.observe(element));
body {
width: 100%;
height: 100vh;
background-color: lightgrey;
}
/* CHILD */
.features-img-wrapper img {
width: 10rem;
transform: translateY(20rem);
display: block;
margin-left: auto;
margin-right: auto;
margin-top: 8rem;
opacity: 0;
transition: all .5s;
}
/* APPEND-CHILD */
.shift_frame_center_img {
transform: none !important;
opacity: .85 !important;
}
/* CHILD ON HOVER */
.features-img-wrapper img:hover {
opacity: 1 !important;
transform: scale(1.035) !important;
}
<body>
<div class="features-img-wrapper">
<img src="https://synapse.it/wp-content/uploads/2020/12/test.png">
</div>
</body>
This snippet removes the need for fill-mode forwards by setting the img to have opacity 1 as its initial state so it will revert to that at the end of the animation.
The animation itself is altered to take 1.5s rather than 1s with the first third simply setting the img opacity to 0 so it can't be seen. This gives the delay effect.
let observer_img = new IntersectionObserver(updates => {
updates.forEach(update => {
if (update.isIntersecting) {
update.target.classList.add('shift_frame_center_img');
} else {
update.target.classList.remove('shift_frame_center_img');
}
});
}, { threshold: 0 });
[...document.querySelectorAll('.features-img-wrapper img')].forEach(element => observer_img.observe(element));
body {
width: 100%;
height: 100vh;
background-color: lightgrey;
}
/* CHILD */
.features-img-wrapper img {
width: 10rem;
display: block;
margin-left: auto;
margin-right: auto;
margin-top: 8rem;
opacity: 0;
transition: all .5s;
opacity: 1;
}
/* APPEND-CHILD */
.features-img-wrapper img {
animation: center_img 1.5s 0s none;
}
/* CHILD ON HOVER */
.shift_frame_center_img:hover {
opacity: 1;
transform: translateY(0) scale(1.035);
}
/* KEYFRAMES */
#keyframes center_img {
0% {
transform: translateY(20rem) scale(1);
opacity: 0;
}
33.33% {
transform: translateY(20rem) scale(1);
opacity: 0;
}
100% {
transform: translateY(0) scale(1);
opacity: .85;
}
}
<body>
<div class="features-img-wrapper">
<img src="https://synapse.it/wp-content/uploads/2020/12/test.png">
</div>
</body>
Note: as each transform setting will reset anything that isn't included both tranlateY and scale are included in each setting.
Outside the SO snippet system it was possible to leave the animation settings untouched by chaining another animation to the front which ran for 0.5s and just set the img to opacity: 0. This did not work in the snippet system (it got into a loop of flashing on and off) hence the introduction of one but extended animation.

sticky header smoothing scroll down

I am creating a sticky header and it works fine but my problem is on "jump" when someone scroll down the page jumping some pixels and has no smoothness. I find some similar topics but I can not make it work for my website,
var navbar = document.getElementById("my_header");
var sticky = navbar.offsetTop;
function myFunction() {
if (window.pageYOffset >= sticky) {
navbar.classList.add("sticky")
} else {
navbar.classList.remove("sticky");
}
}
window.onscroll = function() {myFunction()};
.sticky {
position: fixed;
top: 0;
width: 100%;
z-index:999;
padding:18px 0 0 0;
-webkit-transition: all 1.3s;
-moz-transition: all 1.3s;
-ms-transition: all 1.3s;
-o-transition: all 1.3s;
transition: all 1.3s;
opacity: 1;
animation-name: fadeInOpacity;
animation-iteration-count: 1;
animation-timing-function: ease-in;
animation-duration: 0.75s;
}
#keyframes fadeInOpacity {
0% {
opacity: 0;
}
100% {
opacity: 1;
}
}
<div id="topnavbar"></div>
<div id="my_header" style="width:1150px; background: #181818;">
<div style="width: 100%;margin: -18px auto 0; padding: 0;">
<div id="header"></div>
</div>
</div>
<div id="content"> ... </div>
you can find the demo at JSFIDDLE too.
my website is oipeirates.tv
Thank you in advance.
Check this This is a ready solution :)
Let's get rid of this unnecessary transitions. Do you want to achieve this effect?
.sticky {
position: fixed;
top: 0;
width: 100%;
z-index:999;
padding:18px 0 0 0;
opacity: 1;
animation-name: fadeInOpacity;
animation-iteration-count: 1;
animation-timing-function: ease-in;
animation-duration: 0.75s;
}
#keyframes fadeInOpacity {
0% {
opacity: 0;
}
100% {
opacity: 1;
}
}
http://jsfiddle.net/oipeirates/y41f98dg/39/
Specify what you want to animate, change transition: all 1.3s; to transition: opacity 1.3s;. Now the padding:18px 0 0 0; will not be animated, and the jumping behavior of the sticky header will be prevented.
JSFiddle : http://jsfiddle.net/y41f98dg/54/
i dont have problem to remove the transition or animation i just want to make it smooth with no jumping. but im totally tilted im trying so much days and i cant do this :/

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>

Page elements flying in

My purpose is to modify my page to load elements by "flying in". I found this JSFiddle example, and I should now make it to happen on page load, without clicking anything. So it triggers on page load.
$(function() {
$("#add-sidebar-module").on("click", function() {
$("<div />", {
'class': "module",
text: "I'm new here."
}).prependTo("#sidebar");
});
$("#add-article").on("click", function() {
$("<div />", {
'class': "module",
html: "<h1>Title</h1><p>text text text.</p>"
}).prependTo("#main");
});
});
I'm also afraid that there is some kind of issues in what comes to the page loading and the animation. Tips and tricks to make sure it's as smooth as possible would be welcome!
http://jsfiddle.net/PJN6r/
<div class="animate-on-load">
This is animated
</div>
$('.animate-on-load').addClass('module');
As per your request.
I would not suggest triggering a click on page load. Just add the class on load.
This is more smooth effect: enter link description here
.module {
-webkit-animation: flyin 1s cubic-bezier(.62, -0.36, .4, 1.28);
-moz-animation: flyin 1s cubic-bezier(.62, -0.36, .4, 1.28);
-o-animation: flyin 1s cubic-bezier(.62, -0.36, .4, 1.28);
-ms-animation: flyin 1s cubic-bezier(.62, -0.36, .4, 1.28);
animation: flyin 1s cubic-bezier(.62, -0.36, .4, 1.28);
}
#-webkit-keyframes flyin {
from {
opacity: 0;
-webkit-transform: scale(1.4);
}
to {
-webkit-transform: scale(1);
opacity: 1;
}
}
#-moz-keyframes flyin {
from {
opacity: 0;
-moz-transform: scale(1.4);
}
to {
-moz-transform: scale(1);
opacity: 1;
}
}
#-o-keyframes flyin {
from {
opacity: 0;
-o-transform: scale(1.4);
}
to {
-o-transform: scale(1);
opacity: 1;
}
}
#-ms-keyframes flyin {
from {
opacity: 0;
-ms-transform: scale(1.4);
}
to {
-ms-transform: scale(1);
opacity: 1;
}
}
#keyframes flyin {
from {
opacity: 0;
transform: scale(1.4);
}
to {
transform: scale(1);
opacity: 1;
}
}
body {
padding: 50px;
}
.main, .sidebar {
padding: 1em;
}
.main {
float: left;
width: 60%;
}
.sidebar {
float: right;
width: 20%;
}
.module {
border: 0.5em solid #ccc;
background: #eee;
padding: 1.5em;
margin: 0 0 2em 0;
}
h1 {
margin-top: 0;
}
Check out this jQuery plugin. It animates any element you want when the page loads, so that you don't have to click anything.
Here is a demo of it.
To use this plugin, make sure you first include jQuery on any pages that use it, and include the JavaScript file as well.
Then wrap this tag around all elements you want to fly-in.
<div class="runway">
... fly-in elements go here ...
</div
Finally add either fly-in-right or fly-in-left class to the DOM element you wish to animate.
<img class="fly-in-left" src="..." />
And that should do it! When the element if visible on the page, it will animate a 'fly-in'!

Highlight element using jQuery with scaled transparent element

I'm trying to create the following effect for any element using only jQuery/plugins:
In particular it should use a transform for the scale rather than width and height animation and be usable on any DOM element.
Is there a plugin available for jQuery which will achieve this effect? It should be quite simple: duplicate the dom object with clone(), reposition the clone over the original absolutely then animate a scale transform and opacity on the new element. However, I suspect it's not as simple as this.
Any ideas?
You don't need jQuery to accomplish that animation. You can use CSS3 animations and transform properties. Check out the following example I created:
http://jsbin.com/purik/1/
HTML:
<div class="logos">
<div class="logo"></div>
<div class="logo animated"></div>
</div>
CSS:
.logos {
position: relative;
}
.logo {
width: 100px;
height: 70px;
background: #CC0000 url(http://www.w3schools.com/images/w3logo.png) 50% 50% no-repeat;
-webkit-border-radius: 4px;
-moz-border-radius: 4px;
border-radius: 4px;
}
.logo.animated {
position: absolute;
left: 0;
top: 0;
animation: scale-fadeout 2s infinite;
-webkit-animation: scale-fadeout 2s infinite;
}
#keyframes scale-fadeout {
0% {
transform: scale(1);
opacity: 1;
}
5% {
opacity: 1;
transform: scale(1.05);
}
100% {
opacity: 0;
transform: scale(1.35);
}
}
#-webkit-keyframes scale-fadeout {
0% {
-webkit-transform: scale(1);
opacity: 1;
}
5% {
opacity: 1;
-webkit-transform: scale(1.05);
}
100% {
opacity: 0;
-webkit-transform: scale(1.35);
}
}
This works if the parent element is position: relative, and the element itself is position: absolute.
Clones the element and then animates it to change the size, change the values of left and top, and the set opacity: 0.
Fiddle: http://jsfiddle.net/Ej38P/1/

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