Properties

window.applicationCache Requires Gecko 1.9

An nsIDOMOfflineResourceList object providing access to the offline resources for the window.

window.closed

This property indicates whether the current window is closed or not.

window.Components

The entry point to many XPCOM features. Some properties, e.g. classes, are only available to sufficiently privileged code.

window.content and window._content

Returns a reference to the content element in the current window. The variant with underscore is deprecated.

window.controllers

Returns the XUL controller objects for the current chrome window.

window.crypto

Returns the browser crypto object.

window.defaultStatus

Gets/sets the status bar text for the given window.

window.dialogArguments New in Firefox 3

Gets the arguments passed to the window (if it's a dialog box) at the time window.showModalDialog() was called. This is an nsIArray .

window.directories Obsolete

Synonym of window.personalbar

window.document

Returns a reference to the document that the window contains.

window.frameElement

Returns the element in which the window is embedded, or null if the window is not embedded.

window.frames

Returns an array of the subframes in the current window.

window.fullScreen Requires Gecko 1.9

This property indicates whether the window is displayed in full screen or not.

window.globalStorage Requires Gecko 1.8.1 Non-standard

Multiple storage objects that are used for storing data across multiple pages. Note that this is non-standard; it is recommended that you use window.localStorage instead.

window.history

Returns a reference to the history object.

window.innerHeight

Gets the height of the content area of the browser window including, if rendered, the horizontal scrollbar.

window.innerWidth

Gets the width of the content area of the browser window including, if rendered, the vertical scrollbar.

window.length

Returns the number of frames in the window. See also window.frames.

window.location

Gets/sets the location, or current URL, of the window object.

window.locationbar

Returns the locationbar object, whose visibility can be toggled in the window.

window.localStorage Requires Gecko 1.9.1

Returns a reference to the local storage object used to store data that may only be accessed by the origin that created it.

window.menubar

Returns the menubar object, whose visibility can be toggled in the window.

window.messageManager Requires Gecko 2.0

Returns the message manager object for this window.

window.mozAnimationStartTime Requires Gecko 2.0

The time in milliseconds since epoch at which the current animation cycle began.

window.mozInnerScreenX Requires Gecko 1.9.2

Returns the horizontal (X) coordinate of the top-left corner of the window's viewport, in screen coordinates. This value is reported in CSS pixels. See mozScreenPixelsPerCSSPixel in nsIDOMWindowUtils for a conversion factor to adapt to screen pixels if needed.

window.mozInnerScreenY Requires Gecko 1.9.2

Returns the vertical (Y) coordinate of the top-left corner of the window's viewport, in screen coordinates. This value is reported in CSS pixels. See mozScreenPixelsPerCSSPixel for a conversion factor to adapt to screen pixels if needed.

window.mozPaintCount Requires Gecko 2.0

Returns the number of times the current document has been rendered to the screen in this window. This can be used to compute rendering performance.

window.name

Gets/sets the name of the window.

window.navigator

Returns a reference to the navigator object.

window.opener

Returns a reference to the window that opened this current window.

window.outerHeight

Gets the height of the outside of the browser window.

window.outerWidth

Gets the width of the outside of the browser window.

window.pageXOffset

An alias for window.scrollX.

window.pageYOffset

An alias for window.scrollY

window.parent

Returns a reference to the parent of the current window or subframe.

window.personalbar

Returns the personalbar object, whose visibility can be toggled in the window.

window.pkcs11 Obsolete

Formerly provided access to install and remove PKCS11 modules. Now this property is always null.

window.returnValue New in Firefox 3

The return value to be returned to the function that called window.showModalDialog() to display the window as a modal dialog.

window.screen

Returns a reference to the screen object associated with the window.

window.screen.availTop

Specifies the y-coordinate of the first pixel that is not allocated to permanent or semipermanent user interface features.

window.screen.availLeft

Returns the first available pixel available from the left side of the screen.

window.screen.availHeight

Specifies the height of the screen, in pixels, minus permanent or semipermanent user interface features displayed by the operating system, such as the Taskbar on Windows.

window.screen.availWidth

Returns the amount of horizontal space in pixels available to the window.

window.screen.colorDepth

Returns the color depth of the screen.

window.screen.height

Returns the height of the screen in pixels.

window.screen.left

Returns the current distance in pixels from the left side of the screen.

window.screen.pixelDepth

Gets the bit depth of the screen.

window.screen.top

Returns the distance from the top of the screen.

window.screen.width

Returns the width of the screen.

window.screenX

Returns the horizontal distance of the left border of the user's browser from the left side of the screen.

window.screenY

Returns the vertical distance of the top border of the user's browser from the top side of the screen.

window.scrollbars

Returns the scrollbars object, whose visibility can be toggled in the window.

window.scrollMaxX

The maximum offset that the window can be scrolled to horizontally.

(i.e., the document width minus the viewport width)

window.scrollMaxY

The maximum offset that the window can be scrolled to vertically (i.e., the document height minus the viewport height).

window.scrollX

Returns the number of pixels that the document has already been scrolled horizontally.

window.scrollY

Returns the number of pixels that the document has already been scrolled vertically.

window.self

Returns an object reference to the window object itself.

window.sessionStorage New in Firefox 2.0

A storage object for storing data within a single page session.

window.sidebar

Returns a reference to the window object of the sidebar.

window.status

Gets/sets the text in the statusbar at the bottom of the browser.

window.statusbar

Returns the statusbar object, whose visibility can be toggled in the window.

window.toolbar

Returns the toolbar object, whose visibility can be toggled in the window.

window.top

Returns a reference to the topmost window in the window hierarchy. This property is read only.

window.URL Requires Gecko 2.0

A DOM URL object, which provides the window.URL.createObjectURL() and window.URL.revokeObjectURL() methods.

window.window

Returns a reference to the current window.

window[0], window[1], etc.

Returns a reference to the window object in the frames. See window.frames for more details.