The PageTransitionEvent is fired when a document is being loaded or unloaded.


This interface also inherits properties from its parent, Event.

PageTransitionEvent.persisted Read only
Indicates if the document is loading from a cache.



<!DOCTYPE html>
<body onpageshow="myFunction(event)">


function myFunction(event) { 
    if (event.persisted) {
        alert("The page was cached by the browser");
    } else {
        alert("The page was NOT cached by the browser");


Specification Status Comment
HTML Living Standard
The definition of 'PageTransitionEvent' in that specification.
Living Standard Initial definition

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support Yes ? Yes ? Yes ?
persisted Yes ? Yes ? Yes ?
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support Yes Yes ? Yes Yes ? ?
persisted Yes Yes ? Yes Yes ? ?

Document Tags and Contributors

Contributors to this page: sideshowbarker, fscholz, Claas, Chandler0415, kscarfone, teoli, rabimba
Last updated by: sideshowbarker,