Whether the window is currently the focused window.
OptionalheightThe height of the window, including the frame, in pixels. Under some circumstances a Window may not be assigned height property, for example when querying closed windows from the sessions API.
OptionalidThe ID of the window. Window IDs are unique within a browser session. Under some circumstances a Window may not be assigned an ID, for example when querying windows using the sessions API, in which case a session ID may be present.
Whether the window is incognito.
OptionalleftThe offset of the window from the left edge of the screen in pixels. Under some circumstances a Window may not be assigned left property, for example when querying closed windows from the sessions API.
OptionalsessionThe session ID used to uniquely identify a Window obtained from the sessions API.
OptionalstateThe state of this browser window.
OptionaltabsArray of tabs.Tab objects representing the current tabs in the window.
OptionaltitleThe title of the window. Read-only.
OptionaltopThe offset of the window from the top edge of the screen in pixels. Under some circumstances a Window may not be assigned top property, for example when querying closed windows from the sessions API.
OptionaltypeThe type of browser window this is.
OptionalwidthThe width of the window, including the frame, in pixels. Under some circumstances a Window may not be assigned width property, for example when querying closed windows from the sessions API.
Whether the window is set to be always on top.