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Is it possible to animate a strikethrough? CSS / JS

I am trying to get the text decoration to appear from left to right, as if it is being crossed out with a pen.
Is there a way to do this without making changes to the text behind it?
Thanks in advance!
document.querySelector('h1').addEventListener('click', (e) => {
e.target.classList.toggle('strikethrough')
})
.strikethrough {
text-decoration: line-through;
text-decoration-style: wavy;
text-decoration-thickness: 15%;
animation: strike 3s linear;
}
#keyframes strike {
0% {width: 0;}
100% {width: 100%;}
}
<h1>CROSS ME OUT</h1>

If you are willing to accept using a straight line as the strike through (instead of depending on the font's own strikethrough styles), then it is just a matter of overlaying a div on top of the <h1> element and offsetting it 100% to the side using transform: translateX(-100%). We give it a top border whose width is font-size dependent (i.e. use em units), and a color whose value is dependent on the current font color (i.e. use currentColor).
You can use CSS transitions set the duration and easing function of the entry of this line. When the .strikethrough class is added, the offset is simply set to transform: translateX(0).
A caveat is that this trick only works for non-breaking lines. If your h1 element will render across multiple lines, then it wouldn’t work.
See proof-of-concept example below:
document.querySelector('h1').addEventListener('click', (e) => {
e.target.classList.toggle('strikethrough')
});
h1 {
display: inline-block;
position: relative;
overflow: hidden;
}
h1::after {
position: absolute;
top: calc(50% - 0.05em);
left: 0;
width: 100%;
content: '';
display: block;
border-top: 0.1em solid currentColor;
transform: translateX(-100%);
transition: transform .25s ease-in-out;
}
h1.strikethrough::after {
transform: translateX(0);
}
<h1>CROSS ME OUT</h1>

When two elements use transform to move at the same time, why there is a gap in the middle?

Here is my bug demo:
https://jsbin.com/gijabuseca/edit?html,css,js,output
bug img
Is it a browser bug?
I solved this problem by replacing transform: translateX (100%) with left: 100%
However, using left to change the position performance is much lower than transform. If insist on using transform, is there a way to solve this gap problem?

A hack around this bug can be changing slightly the movement of div 1.
Offsetting a litle bit the timing function from what the standard ease value is, we adjust it closer to div2.
I have set the transition slower so that it is easier to see if it fails
setTimeout(function(){
document.querySelector('.demo1').classList.add('right');
document.querySelector('.demo2').classList.add('right');
});
body {
background: green;
}
.wrapper {
position: relative;
width: 100px;
}
.demo1, .demo2 {
position: absolute;
width: 100%;
height: 100px;
background: #ddd;
transition: 4s;
}
.demo1 {
transform: translateX(0);
transition-timing-function: cubic-bezier(.23, 0.12, .25, 1.05);
}
.demo2 {
transform: translateX(100%);
}
.demo1.right {
transform: translateX(100%)
}
.demo2.right {
transform: translateX(200%);
}
<div class="wrapper">
<div class="demo1"></div>
<div class="demo2"></div>
</div>

Animate one at a time with ng-repeat

I am trying to use ngRepeat to load an image and play it's associated tone, then move the image from the center of the circle to a specific position on a circle, and proceed with the doing the same thing with the next image. I got the images to display and move one by one using ng-enter-stagger, however the images have different positions so when I change it to to use a different class for each repetition, ng-enter-stagger does not work.
How can I go about loading one image, moving it to the proper position, hiding the image, then proceeding with the next image?
I have created a plunkr but the animation does not work in it https://plnkr.co/edit/DddST6JsemsCKKf3mQ6N?p=preview.
An example of what I want to do is the Learn the sounds part of this (http://www.absolutepitchstudy.com/animalgame/) click either Start Control or Start Animal Game
The data looks like this:
"ImageTones":[{"CPosition":"deg60","Image":{"ImageFileName":"Alligator.png","ImageId":1},"Tone":{"ToneFileName":"C3.mp4","ToneId":1}},
{"CPosition":"deg0","Image":{"ImageFileName":"Cow.png","ImageId":4},"Tone":{"ToneFileName":"B5.mp4","ToneId":2}},
{"CPosition":"deg270","Image":{"ImageFileName":"Bird.png","ImageId":3},"Tone":{"ToneFileName":"E3.mp4","ToneId":3}}]
Html page:
<div class="circle-container">
<div ng-repeat="it in model.imageTones" class="it.CPosition">
<img ng-src="../Content/Game/Animals/{{it.Image.ImageFileName}}"/>
<!--Audio tag goes here-->
</div>
</div>
My CSS (I may be able to fix this to not have as many classes, just am unsure how)
.circle-container {
position: relative;
width: 38em;
height: 38em;
padding: 2.8em;
/*2.8em = 2em*1.4 (2em = half the width of a link with img, 1.4 = sqrt(2))*/
border: dashed 1px;
border-radius: 80%;
margin: -5.25em auto 0;
}
.circle-container div {
display: block;
position: absolute;
top: 50%;
left: 50%;
width: 4em;
height: 4em;
margin: -2em;
}
.circle-container div.ng-enter {
transition: 5s linear all;
opacity: 0;
}
.circle-container div.ng-enter-stagger {
/* this will have a 100ms delay between each successive leave animation */
transition-delay: 5.0s;
/* As of 1.4.4, this must always be set: it signals ngAnimate
to not accidentally inherit a delay property from another CSS class */
transition-duration: 0s;
}
.circle-container div.ng-enter.ng-enter-active {
/* standard transition styles */
opacity:1;
}
.deg0.ng-enter-active {
transform: translate(19em);
}
.deg30.ng-enter-active {
transform: rotate(30deg) translate(19em) rotate(-30deg);
}
.deg60.ng-enter-active {
transform: rotate(60deg) translate(19em) rotate(-60deg);
}
.deg90.ng-enter-active {
transform: rotate(90deg) translate(19em) rotate(-90deg);
transition: transform 5s;
}
.deg120.ng-enter-active {
transform: rotate(120deg) translate(19em) rotate(-120deg);
}
.deg150.ng-enter-active {
transform: rotate(150deg) translate(19em) rotate(-150deg);
}
.deg180.ng-enter-active {
transform: rotate(180deg) translate(19em) rotate(-180deg);
}
.deg210.ng-enter-active {
transform: rotate(210deg) translate(19em) rotate(-210deg);
}
.deg240.ng-enter-active {
transform: rotate(240deg) translate(19em) rotate(-240deg);
}
.deg270.ng-enter-active {
transform: rotate(270deg) translate(19em) rotate(-270deg);
}
.deg300.ng-enter-active {
transform: rotate(300deg) translate(19em) rotate(-300deg);
}
.deg330.ng-enter-active {
transform: rotate(330deg) translate(19em) rotate(-330deg);
}

There's a couple of errors to look at 1st, To get a value of a class from an angular item, it's ng-class you should be looking for:
<div ng-repeat="it in model.imageTones" ng-class="it.CPosition" ng-if="!it.hidden" >
<img ng-src="http://www.absolutepitchstudy.com/animalgame/content/images/{{it.Image.ImageFileName}}" />
</div>
Then in you style sheet there seems to be something wrong with the CSS, so I removed a class that wasn't being used:
.deg60{
transform: rotate(60deg) translate(19em) rotate(-60deg);
}
Although to hide stuff you may want that back.
The updated plunk with the work so far is at:
plunky
Now it's being rendered in the right place, you can use $timeout, ng-click or someother method to alter the class definition in your model. The position of the graphic should automatically update.
What method were you going to use?

Flip text with javascript

I had a button that rotated text along the Y axis , giving it a mirrored look. This no longer works for some reason because the button has been placed on the child (popup) and the text to be mirrored is on the parent.
Is there a javascript function i could use to rotate the text on the parent when a button is clicked / rotate it back when its clicked again. (preferably a toggle switch)
This is what I originally had when it was only one the parent page:
HTML link :
<li><a class="button small icon-text-height flipx" href="#" onclick="return false;"></a></li>
The CSS for the div with the text:
article .teleprompter
{
padding: 300px 50px 1000px 100px;
font-size: 30px !important;
line-height: 86px;
z-index: 1;
background-color: #141414;
-webkit-transform: translate3d(0,0,0);
-moz-transform: translate3d(0,0,0);
-ms-transform: translate3d(0,0,0);
-o-transform: translate3d(0,0,0);
transform: translate3d(0,0,0);
}
The CSS for the flipx part:
article .teleprompter.flipx
{
-webkit-transform: rotateY(180deg);
-moz-transform: rotateY(180deg);
-o-transform: rotateY(180deg);
-ms-transform: rotateY(180deg);
z-index: 1;
pointer-events: none;
padding: 300px 50px 1000px 100px !important;
}
JS I Think should work:
<script>
function flipTXT(color)
{
if (parent_window && !parent_window.closed) {
parent_window.document.getElementById("teleprompter").style['-webkit-transform'] = rotateY(180deg);
}
}
</script>

I think one of the two solutions seen in the code at Bin below may work for you:
http://jsbin.com/buqexusamuda/1/
HTML
<p>Card: Flip</p>
<div class="card" href="#">Hello</div>
<p>Card 2: Mirror</p>
<div class="card card2" href="#">Hello</div>
CSS
.card, .card2 {
position: relative;
animation: all 2.5s;
perspective: 1000;
transition: 0.6s;
transform-style: preserve-3d;
width: 90px;
height: 32px;
text-align: center;
line-height: 32px;
z-index: 1;
background-color: #ccc;
color: #666;
}
.card2 { transform-origin: right center; }
.card.flip { transform: rotateY(180deg); }
SCRIPT
jQuery(".card").click(function(){
$(this).toggleClass("flip");
});

The simplest solution would be to use jQuery to add/remove the classes. If you can include jQuery, then you can do something along these lines:
<script>
$(document).ready(function(){
//Since the text is on the parent, you need to access it.
var parentWindow = window.opener;
//This gets the parent's DOM so you can grab the text from the parent window.
var parentDom = parentWindow.document;
//This grabs the text you want to transform.
var targetText = parentDom.getElementsByClassName("teleprompter");
//This toggles the class
$(".button").on('click', function(){
$(targetText).toggleClass("flipx");
});
});
</script>
I used a combination of jQuery and regular javascript so you don't have to roll your own code to add/remove and check for classes.
Here's the code to include jQuery in your page in case you don't have it handy:
This one will work with older non-HTML 5 compliant browsers and modern browsers.
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
This one will only work with more modern browsers:
<script src="//ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

JavaScript/HTML/CSS: Zooming

Let's say I've got a page with a div, and a button. When you click the button, the div should be zoomed in on. In other words, if that div was 100px, when you zoom, it should then become, say, 200px. And all the children of this div should also be doubled in size.
What's the best way to do this?
My understanding is that there's a CSS zoom, but only in IE--it's not part of any CSS standard.

You should use CSS3's transform: scale().
See: http://jsfiddle.net/Favaw/ - (I used jQuery for convenience, but it's not a requirement)
.zoomedIn2x {
-moz-transform: scale(2);
-webkit-transform: scale(2);
-o-transform: scale(2);
-ms-transform: scale(2);
transform: scale(2);
-moz-transform-origin: 0 0;
-webkit-transform-origin: 0 0;
-o-transform-origin: 0 0;
-ms-transform-origin: 0 0;
transform-origin: 0 0;
}
If you need to support older versions of IE than 9, then generate .zoomedIn2x using this tool:
http://www.useragentman.com/IETransformsTranslator/index.html
If you want to do this more dynamically (such as other levels of zoom), then instead use cssSandpaper.

You might want to look into the jQuery plugin Zoomooz: http://janne.aukia.com/zoomooz/

best solution is using
zoom: 50%
i made this example with javascript, you can test it and change it as you like
var zoomediv = document.getElementById('zoomediv')
var zoomin_button = document.querySelector('#zoomin')
zoomin_button.addEventListener('click', function(){
zoomediv.style.zoom = '125%'
})
var zoomout_button = document.querySelector('#zoomout')
zoomout_button.addEventListener('click', () => {
zoomediv.style.zoom = '75%'
})
div {
background: #f0f0f0;
border: 1px solid #e0e0e0;
width: fit-content;
padding: 1rem;
margin-bottom: 1rem;
}
button {
padding: 0 3rem;
}
<div id="zoomediv">
<h1>
Title
</h1>
<p>
this is a paragraph
</p>
</div>
<button id="zoomin">
<h1>
+
</h1>
</button>
<button id="zoomout">
<h1>
-
</h1>
</button>