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.