Develop Reference

Triggering a new CSS webkit animation while another animation is running

I am relatively new to CSS/JS and I have a problem when triggering a new CSS animation.
I have a <div> that infinitely moves through to some specific points of the screen using a CSS keyframe animation.
I have an image that, when clicked, it triggers a js. function that toggles a new CSS class / animation. My problem is that I want to start this new animation in the position that the current(or last animation) was before toggling the new class.
I don't know how to store the current position from the keyframe and make a new animation starting from it.
To simplify, I have something like this in CSS:
.block {
width: 100px;
height: 100px;
background-color: black;
position: relative;
animation: animate 10s infinite ease-in-out;
animation-play-state: running;
}
#keyframes animate {
0% {
transform: translate(-300px, 20px) rotateY(180deg) scale(1)
}
50% {
transform: translate(1200px, 200px) rotateY(180deg) scale(1.2)
}
100% {
transform: translate(200px, 100px) scale(1.2)
}
}
CSS of the new animation triggered:
.block.new-animation {
animation-play-state: paused;
animation: new-animate 10s infinite ease-in-out;
}
#keyframes new-animate{
from {
// current position
}
to {
transform: translate(500px, 20px) scale(1.5);
}
}
Javascript:
const block = document.querySelector('.block')
const image = document.querySelector('.image')
const togglenewAnimation = () => {
block.classList.toggle('new-animation');
}
image.onclick = () => togglenewAnimation();
What I am trying to do is pause the first animation, and then start the new animation based on the current position the div is located.
Any help is very much apreciated. Thank you!

How do i stop webkit animation through js? + fixing image to the right

I'm trying to build a puzzle game website. I'm using webkit animation to rotate (and translate) two images.
My plan is to have rotating gears attached to the left and right edge of my page, offset in a way that only half of each image is shown at a time.
The animation works fine but
(1) i am unable to pause it, and
(2) depending on window size the images are moved out of view (with an automatic scrollbar popping up) or into full view.
The setup is pretty simple:
I have 3 divs: one bar at the top with 100% width and two divs with 50% width below as containers for my images.
I might need to add more below or in between the two divs down the road but for now a solution for this would be good enough^^
For the animation i have a pseudo button on each side which adds a pause class to my images.
HTML
<div id="div-left">
<p>Hey this is the left div</p>
<img src="images/zahnrad.png" alt="zahnrad" id="image1">
<p id="pausebtn1" onclick="pause1()">pause</p>
</div>
<div id="div-right">
<p>hey this is the right div</p>
<img src="images/zahnrad.png" alt="zahnrad" id="image2">
<p id="pausebtn2" onclick="pause2()">pause</p>
</div>
CSS
#image1{
-webkit-animation: rotation-left 30s infinite linear;
}
#image1.paused1::-webkit-progress-value{
-webkit-animaion-play-state:paused;
animaion-play-state:paused;
}
#image2{
align: right;
-webkit-animation: rotation-right 30s infinite linear;
}
#image2.paused2::-webkit-progress-value{
-webkit-animaion-play-state:paused;
animaion-play-state:paused;
}
/* Animations */
#-webkit-keyframes rotation-left{
from {
-webkit-transform: translate(-50%,0px) rotate(0deg);
}
to{
-webkit-transform: translate(-50%,0px) rotate(359deg);
}
}
#-webkit-keyframes rotation-right{
from {
-webkit-transform:translate(+50%,0px) rotate(0deg);
}
to{
-webkit-transform:translate(+50%,0px) rotate(-359deg);
}
}
Javascript
function pause1() {
console.log("pause img 1");
document.getElementById('image1').classList.toggle("paused1");
}
function pause2() {
console.log("pause img 2");
document.getElementById('image2').classList.toggle("paused2");
}
So to sum it all up:
I have two images in the wrong places. They are animated. My two buttons are working but trying to pause the animation by adding a paused class doesn't function.
Any help would be appreciated and i'll see if i can add images later

You shouldn't be targeting ::-webkit-progress-value, that's for <progress> elements. Just toggle the class onto the element:
button.addEventListener('click', function () {
square.classList.toggle('paused');
});
#square {
animation: rotate 1s infinite;
background: lightblue;
border: 1px solid black;
height: 100px;
left: 50px;
position: absolute;
top: 50px;
width: 100px;
}
#square.paused {
animation-play-state: paused;
}
#keyframes rotate {
0% {
transform: rotate(0deg);
}
100% {
transform: rotate(360deg);
}
}
<button id="button">Pause/Resume</button>
<div id="square">Rotate</div>

Activating the animation of one part of a page by clicking an image in another part

After sifting through a bunch of forums and questions on stackoverflow, it seems to me that using JavaScript is a unavoidable here. I have successfully implemented an animation of a list on my site, but I would like the animation to only play after an image has been clicked (and then to close it by clicked again).
This is the animation:
.scale-in-hor-left { -webkit-animation: scale-in-hor-left 1.2s cubic-bezier(0.19, 1, 0.22, 1) both;
animation: scale-in-hor-left 1.2s cubic-bezier(0.19, 1, 0.22, 1) both;
}
#-webkit-keyframes scale-in-hor-left {
0% {
-webkit-transform: scaleX(0);
transform: scaleX(0);
-webkit-transform-origin: 0% 0%;
transform-origin: 0% 0%;
opacity: 1;
}
100% {
-webkit-transform: scaleX(1);
transform: scaleX(1);
-webkit-transform-origin: 0% 0%;
transform-origin: 0% 0%;
opacity: 1;
}
}
#keyframes scale-in-hor-left {
0% {
-webkit-transform: scaleX(0);
transform: scaleX(0);
-webkit-transform-origin: 0% 0%;
transform-origin: 0% 0%;
opacity: 1;
}
100% {
-webkit-transform: scaleX(1);
transform: scaleX(1);
-webkit-transform-origin: 0% 0%;
transform-origin: 0% 0%;
opacity: 1;
}
}
And the image I would like to activate it has nothing special going on
<img id="imagename" src="#" height="#" />
I know the JavaScript looks something like this:
function ani(){
document.getElementById('imagename').className ='scale-in-hor-left';
}
But every time I try some HTML to use the two together, I just end up with a button or nothing, and I have yet to get the animation to stop before the click. (Also, will successfully getting the onclick to work ensure that the animated element is invisible before activation based n the 0%s in the CSS?)

You are right in thinking that you'll want to control the animation with a click event handler; otherwise, as you're seeing, your CSS animation kicks off immediately.
As written, your ani() function will only add your animation class to your target "list" element. You will need to toggle the class name on 'click' to alternately add or remove it. To do that, the event handler needs to determine which action to take.
Assuming that you're attempting to accomplish this in vanilla JavaScript (that is, you aren't using a library like jQuery — which has a .toggleClass() method of its own), you can use the presence of the class name itself to determine this…
var
CLASSNAME_TOGGLE = 'toggle-class',
el_trigger = document.getElementById('trigger'),
el_target = document.getElementById('target');
function toggleClass(event) {
event.preventDefault();
if (el_target.classList.contains(CLASSNAME_TOGGLE)) {
// remove the class
el_target.classList.remove(CLASSNAME_TOGGLE);
} else {
// add the class
el_target.classList.add(CLASSNAME_TOGGLE);
};
}
el_trigger.addEventListener('click', toggleClass, false);
#target {
/* this would be your list's default styles */
padding: 20px;
margin: 20px;
border: 1px solid #fbb;
background: #fee;
}
#target.toggle-class {
/* this would be your list's animation */
border-color: #bfb;
background: #efe;
}
<div id="target">
Your "List" Element [the target of the toggled class]
</div>
<img id="trigger" src="https://via.placeholder.com/300x50?text=Your+Trigger+Image" />

If your okay with using jquery then:
https://api.jquery.com/click/
$("#imagename").click(function() {
$("#imagename").addClass("scale-in-hor-left");
});
Or with vanilla javascript:
document.getElementById("imagename").addEventListener("click", ani); // This calls your function ani

Random animation on Simple Image Slideshow

I want to apply a random animation on my slideshow image. First, I tried adding an animation such as scale but it didn't work as I wanted it to.
Things I want to fix:
Smoothness on fadein
Random animation (can be anything at this point, I just want to see how it's done)
Fiddle: http://jsfiddle.net/jzhang172/e7cLtsg9/1/
$(function() {
$('img').hide();
function anim() {
$("#wrap img").first().appendTo('#wrap').fadeOut(3500).addClass('transition').addClass('scaleme');
$("#wrap img").first().fadeIn(3500).removeClass('scaleme');
setTimeout(anim, 3700);
}
anim();
});
body,
html {
margin: 0;
padding: 0;
background: black;
}
#wrap img {
position: absolute;
top: 0;
display: none;
width: 100%;
height: 100%;
}
.transition {
transition: 10s;
}
.scaleme {
transition: 10s;
transform: scale(1.3);
}
.box {
height: 300px;
width: 500px;
position: relative;
overflow: hidden;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="box">
<div id="wrap">
<img src="http://elegantthemes.com/preview/InStyle/wp-content/uploads/2008/11/s-1.jpg" />
<img src="http://elegantthemes.com/preview/InStyle/wp-content/uploads/2008/11/s-5.jpg" />
<img src="http://elegantthemes.com/preview/InStyle/wp-content/uploads/2008/11/s-3.jpg" />
</div>
</div>

Here is a sample using CSS animations and jQuery (for achieving the randomness of animations). If you don't wish to use CSS animations and want to stick to transitions + jQuery effects (like fadeIn), you can still adapt this code to support it because the base idea will still remain the same. I am not too comfortable with jQuery effects and have hence stuck to using CSS animations.
Below is an overview of how it is being done (refer inline comments for more details):
Inside a wrapper there are a group of images that are part of the slide-show (like in your demo).
Using CSS #keyframes, a list of animations (one of which would be used randomly) is created in addition to the default fade-in-out animation. This list is also maintained in an array variable (in JS for picking up a random one from the list).
On load, the default fade-in-out animation and one random animation is added to the 1st element.
An animationend event handler is added to all of the images. This event handler will be triggered when the animation on an element ends. When this is triggered, animation on the current element is removed and the default fade-in-out + a random animation is added to the next element.
The animations are added using inline styles because if we add multiple CSS classes each with one different animation, then the animation in the latest class will override the others (that is, they will not happen together).
A loop effect is achieved by checking if the current element has any other img sibling elements. If there are none, the animation is added back to the 1st element.
$(window).load(function() {
$img = $('img'); // the images
var anim = ['zoom', 'shrink', 'move-down-up', 'move-right-left']; // the list of random animations
var rand = Math.floor(Math.random() * 4) + 1; // random number
$img.each(function() { // attach event handler for each image
$(this).on('animationend', function(e) { // when animation on one image has ended
if (e.originalEvent.animationName == 'fade-in-out') { // check the animation's name
rand = Math.floor(Math.random() * 4) + 1; // get a random number
$(this).css('animation-name', 'none'); // remove animation on current element
if ($(this).next('img').length > 0) // if there is a next sibling
$(this).next('img').css('animation-name', 'fade-in-out, ' + anim[rand - 1]); // add animation on next sibling
else
$img.eq(0).css('animation-name', 'fade-in-out, ' + anim[rand - 1]); // else add animation on first image (loop)
}
});
});
$img.eq(0).css('animation-name', 'fade-in-out, ' + anim[rand - 1]); //add animation to 1st element on load
})
#wrapper {
height: 250px;
width: 300px;
position: relative;
}
img {
position: absolute;
z-index: 1;
bottom: 20px;
left: 10px;
opacity: 0;
transform-origin: left top; /* to be on the safe side */
animation-duration: 3s; /* increase only if you want duration to be longer */
animation-fill-mode: backwards; /* fill mode - better to not change */
animation-iteration-count: 1; /* no. of iterations - don't change */
animation-timing-function: ease; /* better to leave as-is but can be changed */
}
#keyframes fade-in-out {
0%, 100% {
opacity: 0;
}
33.33%, 66.66% { /* duration is 3s, so fade-in at 1s, stay till 2s, fade-out from 2s */
opacity: 1;
}
}
#keyframes zoom {
0%, 100% {
transform: scale(1);
}
50% {
transform: scale(1.5);
}
}
#keyframes shrink {
0%, 100% {
transform: scale(1);
}
50% {
transform: scale(.5);
}
}
#keyframes move-down-up {
0%, 100% {
transform: translateY(0px);
}
50% {
transform: translateY(50px);
}
}
#keyframes move-right-left {
0%, 100% {
transform: translateX(0px);
}
50% {
transform: translateX(50px);
}
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="wrapper">
<img src="https://placehold.it/200/000000/ffffff" />
<img src="https://placehold.it/200/ff0000/ffffff" />
<img src="https://placehold.it/200/00ff00/ffffff" />
<img src="https://placehold.it/200/0000ff/ffffff" />
</div>

Enlarge an image from zero to full size on image load

I'm placing images of a bubble randomly and I want to simulate the effect of making the bubble by enlarging the image from zero to full size. I'm using CSS transform:scale(); but I want to trigger the animation when the image loads.

You can add a class to the image when it finishes loading, and specify proper transition and transform rules in CSS.
$("img").load(function() {
$(this).addClass("loaded");
});
img {
transition: transform 1s;
transform: scaleX(0) scaleY(0);
}
img.loaded {
transform: scaleX(1) scaleY(1);
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<img src="https://placekitten.com/600/600/">

Here are two ways which doesn't require jQuery.
This way is preferable:
var pics = document.querySelectorAll(".zoom");
for (var i = 0; i < pics.length; i++) {
pics[i].addEventListener('load', function() {
this.classList.add("loaded");
}, false);
}
img {
transition: transform .5s;
transform: scale(0,0);
}
img.loaded {
transform: scale(1,1);
}
<img src="https://via.placeholder.com/300x200/00f/fff?text=Dummy-Image" class="zoom">
and this could be used when the amount of images is limited:
function imgresize(el) {
el.classList.add("loaded");
}
img {
transition: transform .5s;
transform: scale(0,0);
}
img.loaded {
transform: scale(1,1);
}
<img src="https://via.placeholder.com/300x200/00f/fff?text=Dummy-Image" onload="imgresize(this);">

You can try onload() function to do certain tasks that only happend when something is loaded.
i.e;
$('img').on('load',function(){
alert('image loaded');
}