Bug 1619821 Comment 3 Edit History

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Original comment by
on 
OK. I just write a test:
```
target::before {
  margin-left: 10px;
}
```
```
<div id='target'></div>
```
```
const d = document.getElementById('target');

const effect = new KeyframeEffect(null, {opacity:['0.5', '1']}, 10000);
const anim = new Animation(effect, document.timeline);
anim.play();
anim.currentTime = 5000;
effect.target = d;
effect.pseudoElement = '::before';

console.log(d.getAnimations());
console.log(document.getAnimations());
```
I got an empty array from `d.getAnimations()` and one animation from `document.getAnimations()`.
Revision 1 by
on 
OK. I just write a test:
```
target::before {
  margin-left: 10px;
}
```
```
<div id='target'></div>
```
```
const d = document.getElementById('target');

const effect = new KeyframeEffect(null, {opacity:['0.5', '1']}, 10000);
const anim = new Animation(effect, document.timeline);
anim.play();
anim.currentTime = 5000;
effect.target = d;
effect.pseudoElement = '::before';

console.log(d.getAnimations({subtree: true}));
console.log(document.getAnimations());
```
I got one animation from both.
Revision 2 by
on 
OK. I just write a test (https://jsfiddle.net/borischiou/wgsbpujr/):
```
target::before {
  margin-left: 10px;
}
```
```
<div id='target'></div>
```
```
const d = document.getElementById('target');

const effect = new KeyframeEffect(null, {opacity:['0.5', '1']}, 10000);
const anim = new Animation(effect, document.timeline);
anim.play();
effect.target = d;
effect.pseudoElement = '::before';

console.log(d.getAnimations({subtree: true}));
console.log(document.getAnimations());
```
I got one animation from both.

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