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.

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

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

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 Standard # the-pagetransitionevent-interface

Browser compatibility

BCD tables only load in the browser