ViewTransition: updateCallbackDone property

Baseline 2025

Newly available

Since ⁨October 2025⁩, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.

The updateCallbackDone read-only property of the ViewTransition interface is a Promise that fulfills when the promise returned by the document.startViewTransition() method's callback fulfills, or rejects when it rejects.

updateCallbackDone is useful when you don't care about the success/failure of a same-document (SPA) view transition animation, and just want to know if and when the DOM is updated.

Note: In the case of a cross-document (MPA) view transition, the updateCallbackDone promise of the associated ViewTransition is automatically fulfilled.

Value

A Promise.

Examples

// start new SPA view transition
const transition = document.startViewTransition(() => displayNewImage());
transition.updateCallbackDone.then(() => {
 // Respond to the DOM being updated successfully
});

See Transitions as an enhancement for a useful example.