PageTransitionEvent - Web APIs | MDN (original) (raw)

Baseline

Widely available

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

Event PageTransitionEvent

Constructor

PageTransitionEvent()

Creates a new PageTransitionEvent object.

Instance properties

This interface also inherits properties from its parent, Event.

PageTransitionEvent.persisted Read only

Indicates if the document is loading from a cache.

Example

HTML

<!doctype html>
<html lang="en-US">
  <body></body>
</html>

JavaScript

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

Specification
HTML # the-pagetransitionevent-interface