The cancel event of the Animation interface is fired when the Animation.cancel() method is called or when the animation enters the "idle" play state from another state, such as when the animation is removed from an element before it finishes playing.
Note: Creating a new animation that is initially idle does not trigger a cancel event on the new animation.
Use the event name in methods like addEventListener(), or set an event handler property.
addEventListener("cancel", (event) => { })
oncancel = (event) => { }An AnimationPlaybackEvent. Inherits from Event.
If this animation is canceled, remove its element.
animation.oncancel = (event) => {
animation.effect.target.remove();
};