How to create a video file from animations that run in a div (or other DOM element) in Javascript. For example:
<!DOCTYPE html>
<html>
<head>
<style>
div {
width: 100px;
height: 100px;
background-color: red;
position: relative;
animation-name: example;
animation-duration: 4s;
animation-delay: 0s;
}
#keyframes example {
0% {background-color:red; left:0px; top:0px;}
25% {background-color:yellow; left:200px; top:0px;}
50% {background-color:blue; left:200px; top:200px;}
75% {background-color:green; left:0px; top:200px;}
100% {background-color:red; left:0px; top:0px;}
}
</style>
</head>
<body>
<p><b>Note:</b> This example does not work in Internet Explorer 9 and earlier versions.</p>
<div></div>
</body>
</html>
So, I want this animation to be saved in a file like .avi or .mp4, ... I did a lot of research and I didn't get a satisfactory solution. Just something like html2canvas() that seems to be just for print. PS: in Javascript (with any library, plugin?)
Related
This is my simple code, which I want it to scale my whole document (html) with a delay of 1s (with javascript) and it should animate slowly the scale of the whole website.
In this fiddle, it is not really working at all - but on my file it actually animates it, but only when the user moves the mouse constantly.
html {
height: 100%;
width:100%;
transition: transform 15s linear;
transform: scale(0.6)
setTimeout(function(){
document.querySelector("html").style.transform = "scale(0.7)";
},1000)
html {
height: 100%;
width:100%;
transition: transform 15s linear;
transform: scale(0.6); background:url("https://www.toptal.com/designers/subtlepatterns/patterns/moroccan-flower-dark.png");
}
<html>
<body></body>
</html>
I could not make it work with your code so I modified it like this:
<script>
setTimeout(function(){
document.querySelector("#test").style.transform = "scale(0.7)";
},1000)
</script>
<style>
html {
height: 100%;
width:100%;
}
#test{
height: 100%;
width:100%;
transition: transform 15s linear;
transform: scale(0.6);
background:url("https://www.toptal.com/designers/subtlepatterns/patterns/moroccan-flower-dark.png");
}
</style>
<html>
<body>
<div id="test"></div>
</body>
</html>
And it seems to work as expected for me, whether I move the mouse or not. The issue is that the background on html or body tag will fill the full size of the screen even if zooming in and out or resizing.
EDIT:
If you want the background to fit the full window while the content is growing: I just added a div in your body to see easier what is happening. Is this what you want to have?
setTimeout(function(){
document.querySelector("html").style.transform = "scale(0.8)";
},1000)
html {
height: 100%;
width:100%;
transition: transform 15s linear;
transform: scale(0.6);
background:url("https://www.toptal.com/designers/subtlepatterns/patterns/moroccan-flower-dark.png");
}
body{
height: 100%;
width:100%;
}
div{
height: 100%;
width:100%;
background-color: #000;
}
<body>
<div></div>
</body>
I want to make a rotated animation of a font icon, but I can not let the center be the right place, The rotation is always offset a little.
Here is the example:
#keyframes circle {
from {transform: rotate(0deg);}
to {transform: rotate(360deg);}
}
div {
padding:0;
margin:0;
}
.container {
position:absolute;
top:50px;
left:50px;
border:1px solid red;
font-size:20px;
}
.inner {
line-height:0;
animation-name:circle;
animation-duration: 1s;
animation-iteration-count: infinite;
}
<link href="https://use.fontawesome.com/releases/v5.7.0/css/all.css" rel="stylesheet"/>
<div class="container"><div class="inner"><i class="fas fa-adjust"></i></div></div>
JSFiddle : https://jsfiddle.net/217z69sm/2/
It seems like font-awesome are aware of this, and there suggestion seems to be to switch to the svg version, or to use display: block:
Icon Animation + Wobbles
We’ve worked hard to keep icons perfectly
centered when they are spinning or pulsing. However, we’ve seen issues
with several browsers and the web fonts + CSS version of Font Awesome.
Through a lot of investigation this appears to be an issue with web
fonts in general and not something we can directly fix. We do have a
couple of ways you might be able to work around this:
Switch Frameworks - Switch to the SVG with JavaScript version, it’s
working a lot better for this. Set the display of the animating icon -
Use display: block; where you can. This seems to help a lot with this
issue.
Taken from https://fontawesome.com/how-to-use/on-the-web/styling/animating-icons
I can't say that I can see the difference which using display: block gives here, perhaps others can spot it or add an explanation of why it might help:
#keyframes circle {
from {transform: rotate(0deg);}
to {transform: rotate(360deg);}
}
div {
padding:0;
margin:0;
}
.container {
position:absolute;
top:50px;
left:50px;
border:1px solid red;
font-size:20px;
}
.inner {
line-height:0;
animation-name:circle;
animation-duration: 1s;
animation-iteration-count: infinite;
}
#block {
display: block;
}
.two {
left: 75px;
}
<link href="https://use.fontawesome.com/releases/v5.7.0/css/all.css" rel="stylesheet"/>
<div class="container"><div class="inner"><i class="fas fa-adjust"></i></div></div>
<div class="container two"><div class="inner"><i class="fas fa-adjust" id="block"></i></div></div>
I analysis that the icon has some unbalance margins, which is creating a little offset when we try to rotate it.
here, I remake the same icon,
check if it works for you.
#keyframes circle {
from {transform: rotate(0deg);}
to {transform: rotate(360deg);}
}
.container {
position:absolute;
top:50px;
left:50px;
border:1px solid red;
font-size:300px;
}
.inner {
padding: 2px;
animation-timing-function: linear;
animation-name:circle;
animation-duration: 1s;
animation-iteration-count: infinite;
}
.rot{
border: 10px solid black;
width: 100px;
height: 100px;
border-radius: 50%;
background-image: linear-gradient(to left,black 0%, black 50%, white 50%,white 100%);
}
<div class="container">
<div class="inner">
<div class="rot">
</div>
</div>
</div>
I want to display this light if a certain condition is true in javascript using an if statement. How can I add an external CSS class to a javascript if statement?
Here is my css code:
.beacon{
position:absolute;
background-color:#32CD32;
height:1.5em;
width:1.5em;
border-radius:50%;
-webkit-transform:translateX(-50%) translateY(-50%);
}
.beacon:before{
position:absolute;
content:"";
height:1.5em;
width:1.5em;
left:0;
top:0;
background-color:transparent;
border-radius:50%;
box-shadow:0px 0px 2px 2px #32CD32;
-webkit-animation:active 2s infinite linear;
animation:active 2s infinite linear;
}
#-webkit-keyframes active{
0%{
-webkit-transform:scale(.1);
opacity:1;
}
70%{
-webkit-transform:scale(2.5);
opacity:0;
}
100%{
opacity:0;
}
}
#keyframes active{
0%{
transform:scale(.1);
opacity:1;
}
70%{
transform:scale(2.5);
opacity:0;
}
100%{
opacity:0;
}
}
this is the javascript code:
<div class="too white">
<script language="javascript">
url = "http://www.511virginia.org/"
ping = new XMLHttpRequest();
ping.onreadystatechange = function(){
if(ping.readyState == 4){
if(ping.status == 200){
document.write("Website is up");
}
else {
document.write("Website is down");
}
}
}
ping.open("GET", url, false);
ping.send();
</script>
</div>
It depends on any framework you're using. For example, if you're using jQuery then change a DOM element's CSS using .css(property, value). Angular has it's own methods. For raw DOM manipulation take a look at the w3c page on JavaScript HTML DOM - Changing CSS, which shows the following.
document.getElementById(id).style.property = new style
I have a popup javascript I am using on one of my html pages.
It works fine, but... when I tried to add a second one in a different location, the script would not function.
I'm not sure what I am doing wrong.
I need at least three of these on one webpage in different locations.
Any advice would be appreciated.
Here is the basic script....
<!DOCTYPE html>
<html>
<head>
<script>function myfunction() {var popup1 = document.getElementById("popup1"); popup1.classList.toggle("showpopup1");}</script>
<style>
body {margin:0;}
/* popup container */
.popup1 {
margin-left:200px;
margin-top:200px;
margin-bottom:0px;
position:relative;
display:inline-block;
cursor:pointer;
-webkit-user-select:none;
-moz-user-select:none;
-ms-user-select:none;
user-select:none;
}
/* The actual popup */
.popup1 .popup1text {
visibility:hidden;
background-color:#555;
color:#fff;
border-radius:10px;
padding:8px 8px 8px 8px;
width:400px;
height:80px;
position:absolute;
text-align:left;
z-index:1;
bottom:130%;
left:50%;
margin-left:-210px;
}
/* Popup arrow */
.popup1 .popup1text::after {
content:"";
position:absolute;
top:100%;
left:50%;
margin-left:-5px;
border-width:5px;
border-style:solid;
border-color:#555 transparent transparent transparent;
}
/* Toggle this class - hide and show the popup */
.popup1 .showpopup1 {
visibility:visible;
-webkit-animation:fadeIn 1s;
animation:fadeIn 1s;
}
/* Add animation (fade in the popup) */
#-webkit-keyframes fadeIn{from {opacity: 0;} to {opacity: 1;}
#keyframes fadeIn{from {opacity: 0;} to {opacity:1 ;}
</style>
</head>
<body>
<div class="popup1" onclick="myfunction()">POPUP 1<span class="popup1text" id="popup1">Popup 1 Text</span></div>
</body>
</html>
I am trying to animate a div by adding a CSS class name to it on click of a button. But this works only for the first time. Next time I click the button and add the CSS class name, it doesn't animate the div. What am I doing wrong here?
<head>
<script>
function abc() {
document.getElementById("a").className = "";
document.getElementById("a").className = document.getElementById("a").className + " b";
}
</script>
<style>
#a {
width:100px;
height:100px;
background:red;
position:relative;
}
.b {
animation-name:myfirst;
animation-duration:5s;
animation-timing-function:linear;
animation-delay:2s;
animation-iteration-count:1;
animation-direction:alternate;
animation-play-state:running;
}
#keyframes myfirst
{
0% {background:red; left:0px; top:0px;}
25% {background:yellow; left:200px; top:0px;}
50% {background:blue; left:200px; top:200px;}
75% {background:green; left:0px; top:200px;}
100% {background:red; left:0px; top:0px;}
}
#-webkit-keyframes myfirst /* Safari and Chrome */
{
0% {background:red; left:0px; top:0px;}
25% {background:yellow; left:200px; top:0px;}
50% {background:blue; left:200px; top:200px;}
75% {background:green; left:0px; top:200px;}
100% {background:red; left:0px; top:0px;}
}
</style>
</head>
<body>
<div id="a" class="c"></div>
<button onclick="abc()">Click</button>
</body>
The classes on a given element are a set, so adding one that’s already there doesn’t change anything. This kind of animation would probably be better done using JavaScript. (In practice, CSS animation is like anything in CSS — it depends on state, not actions.)
Or am I misunderstanding? Is the problem that it doesn’t stop?
Since you’re using animations, it’s probably safe to assume classList support, so:
document.getElementById("a").classList.toggle("b");