The Animation.playState property of the Web Animations API returns and sets an enumerated value describing the playback state of an animation.

Note: This property is read-only for CSS Animations and Transitions.



The current time of the animation is unresolved and there are no pending tasks.


The animation is running.


The animation was suspended and the Animation.currentTime property is not updating.


The animation has reached one of its boundaries and the Animation.currentTime property is not updating.

Previously, Web Animations defined a pending value to indicate that some asynchronous operation such as initiating playback was yet to complete. This is now indicated by the separate Animation.pending property.


In the Growing/Shrinking Alice Game example, players can get an ending with Alice crying into a pool of tears. In the game, for performance reasons, the tears should only be animating when they're visible. So they must be paused as soon as they are animated like so:

// Setting up the tear animations

tears.forEach((el) => {
  el.animate(tearsFalling, {
    delay: getRandomMsRange(-1000, 1000), // randomized for each tear
    duration: getRandomMsRange(2000, 6000), // randomized for each tear
    iterations: Infinity,
    easing: "cubic-bezier(0.6, 0.04, 0.98, 0.335)",

// Play the tears falling when the ending needs to be shown.

tears.forEach((el) => {;

// Reset the crying tears animations and pause them.

tears.forEach((el) => {
  el.currentTime = 0;


Unknown specification
# dom-animation-playstate

Browser compatibility

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See also