ReadonlyfinishedThe finished read-only property of the ViewTransition interface is a Promise that fulfills once the transition animation is finished, and the new page view is visible and interactive to the user.
ReadonlyreadyThe ready read-only property of the ViewTransition interface is a Promise that fulfills once the pseudo-element tree is created and the transition animation is about to start.
ReadonlytypesThe types read-only property of the ViewTransition interface is a ViewTransitionTypeSet that allows the types set on the view transition to be accessed and modified.
ReadonlyupdateThe 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.
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ViewTransitioninterface of the View Transition API represents an active view transition, and provides functionality to react to the transition reaching different states (e.g., ready to run the animation, or animation finished) or skip the transition altogether.MDN Reference