PageTransitionEvent

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

ThePageTransitionEvent event object is available inside handler functions for thepageshow andpagehide events, fired when a document is being loaded or unloaded.

Constructor

PageTransitionEvent(): Creates a newPageTransitionEvent object.

Instance properties

This interface also inherits properties from its parent,Event.

PageTransitionEvent.persistedRead only: Indicates if the document is loading from a cache.

Example

window.addEventListener("pageshow", (event) => {  if (event.persisted) {    alert("The page was cached by the browser");  } else {    alert("The page was NOT cached by the browser");  }});