Firefox Tomorrow

web api interface

PageTransitionEvent

View on MDN ↗

The PageTransitionEvent event object is available inside handler functions for the pageshow and pagehide events, fired when a document is being loaded or unloaded.

Constructor

Instance properties

This interface also inherits properties from its parent, Event.

  • persisted Read 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");
  }
});

Specifications

SpecificationsStandards references are available on the canonical MDN page.

Browser compatibility

Browser compatibilityCompatibility data is available on the canonical MDN page.

See also