Information about a browser window.
windows.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 thesessionsAPI. -
stateOptional -
A
windows.WindowStatevalue representing the state of this browser window — maximized, minimized, etc. -
tabsOptional -
Array of
tabs.Tabobjects 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.WindowTypevalue 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
|
?
|
15
|
?
|
alwaysOnTop |
19
|
79
|
45
|
?
|
15
|
14
Always returns false.
|
?
|
?
|
No
|
?
|
15
Always returns false.
|
?
|
focused |
Yes
|
14
|
45
|
?
|
Yes
|
14
|
?
|
?
|
No
|
?
|
15
|
?
|
height |
Yes
|
14
|
45
|
?
|
Yes
|
14
|
?
|
?
|
No
|
?
|
15
|
?
|
id |
Yes
|
14
|
45
|
?
|
Yes
|
14
|
?
|
?
|
No
|
?
|
15
|
?
|
incognito |
Yes
|
14
|
45
|
?
|
Yes
|
14
|
?
|
?
|
No
|
?
|
15
|
?
|
left |
Yes
|
14
|
45
|
?
|
Yes
|
14
|
?
|
?
|
No
|
?
|
15
|
?
|
sessionId |
31
|
79
|
No
|
?
|
18
|
No
|
?
|
?
|
No
|
?
|
No
|
?
|
state |
Yes
|
14
|
45
|
?
|
Yes
|
14
|
?
|
?
|
No
|
?
|
15
|
?
|
tabs |
Yes
|
14
|
45
|
?
|
Yes
|
14
|
?
|
?
|
No
|
?
|
15
|
?
|
title |
No
|
No
|
56
|
?
|
No
|
No
|
?
|
?
|
No
|
?
|
No
|
?
|
top |
Yes
|
14
|
45
|
?
|
Yes
|
14
|
?
|
?
|
No
|
?
|
15
|
?
|
type |
Yes
|
14
|
45
|
?
|
Yes
|
14
|
?
|
?
|
No
|
?
|
15
|
?
|
width |
Yes
|
14
|
45
|
?
|
Yes
|
14
|
?
|
?
|
No
|
?
|
15
|
?
|
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.
© 2005–2022 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
