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Returns a reference to the topmost window in the window hierarchy.

Syntax

var topWindow = window.top;

Notes

Where the window.parent property returns the immediate parent of the current window, window.top returns the topmost window in the hierarchy of window objects.

This property is especially useful when you are dealing with a window that is in a subframe of a parent or parents, and you want to get to the top-level frameset.

Specifications

Specification Status Comment
HTML Living Standard
The definition of 'window.top' in that specification.
Living Standard  
HTML5
The definition of 'window.top' in that specification.
Recommendation Initial definition

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic supportChrome Full support YesEdge Full support YesFirefox Full support Yes
Notes
Full support Yes
Notes
Notes Starting in Firefox 6, this property is read only, as defined by the standard.
IE Full support YesOpera Full support YesSafari Full support YesWebView Android ? Chrome Android ? Edge Mobile Full support YesFirefox Android ? Opera Android ? Safari iOS ? Samsung Internet Android ?

Legend

Full support  
Full support
Compatibility unknown  
Compatibility unknown
See implementation notes.
See implementation notes.

Autorzy i etykiety dokumentu

Ostatnia aktualizacja: connorshea,