W3cubDocs

/Web Extensions

windows.Window

Information about a browser window.

Type

Values of this type are objects. They contain the following properties:

alwaysOnTop
boolean. Whether the window is set to be always on top.
focused
boolean. Whether the window is currently the focused window.
heightOptional
integer. The height of the window, including the frame, in pixels.
idOptional
integer. The ID of the window. Window IDs are unique within a browser session.
incognito
boolean. Whether the window is incognito (private).
leftOptional
integer. The offset of the window from the left edge of the screen in pixels.
sessionIdOptional
string. The session ID used to uniquely identify a Window obtained from the sessions API.
stateOptional
A windows.WindowState value representing the state of this browser window — maximized, minimized, etc.
tabsOptional
Array of tabs.Tab objects representing the current tabs in the window.
titleOptional
The title of the browser window. Requires "tabs" permission or host permissions for the active tab's URL. Read only.
topOptional
integer. The offset of the window from the top edge of the screen in pixels.
typeOptional
A windows.WindowType value representing the type of browser window this is — normal browser window, popup, etc.
widthOptional
integer. The width of the window, including the frame, in pixels.

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
Window
Yes
14
45
?
Yes
14
?
?
No
?
?
?
alwaysOnTop
19
79
45
?
15
14
Always returns false.
?
?
No
?
?
?
focused
Yes
14
45
?
Yes
14
?
?
No
?
?
?
height
Yes
14
45
?
Yes
14
?
?
No
?
?
?
id
Yes
14
45
?
Yes
14
?
?
No
?
?
?
incognito
Yes
14
45
?
Yes
14
?
?
No
?
?
?
left
Yes
14
45
?
Yes
14
?
?
No
?
?
?
sessionId
31
79
No
?
18
No
?
?
No
?
?
?
state
Yes
14
45
?
Yes
14
?
?
No
?
?
?
tabs
Yes
14
45
?
Yes
14
?
?
No
?
?
?
title
No
No
56
?
No
No
?
?
No
?
?
?
top
Yes
14
45
?
Yes
14
?
?
No
?
?
?
type
Yes
14
45
?
Yes
14
?
?
No
?
?
?
width
Yes
14
45
?
Yes
14
?
?
No
?
?
?

Note: This API is based on Chromium's chrome.windows API. This documentation is derived from windows.json in the Chromium code.

Microsoft Edge compatibility data is supplied by Microsoft Corporation and is included here under the Creative Commons Attribution 3.0 United States License.

© 2005–2021 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/windows/Window