The read-only Animation.replaceState property of the Web Animations API indicates whether the animation has been removed by the browser automatically after being replaced by another animation.

A string that represents the replace state of the animation. The value can be one of:

active

The initial value of the animation's replace state when the animation is created.

persisted

The animation has been explicitly persisted by invoking Animation.persist() on it.

removed

The animation has been removed by the browser automatically.

• Web Animations API
• Animation
• remove event
• Animation.persist()