AbstractRange
Comment
DOMError Deprecated
DOMPoint
Document
Event
MutationRecord
NodeList
Text
TreeWalker
DOM document loaded in that window.

A window for a given document can be obtained using the document.defaultView property.

A global variable, window, representing the window in which the script is running, is exposed to JavaScript code.

The Window interface is home to a variety of functions, namespaces, objects, and constructors which are not necessarily directly associated with the concept of a user interface window. However, the Window interface is a suitable place to include these items that need to be globally available. Many of these are documented in the DOM Reference.

In a tabbed browser, each tab is represented by its own Window object; the global window seen by JavaScript code running within a given tab always represents the tab in which the code is running. That said, even in a tabbed browser, some properties and methods still apply to the overall window that contains the tab, such as innerHeight. Generally, anything that can't reasonably pertain to a tab pertains to the window instead.

Instance properties

This interface inherits properties from the EventTarget interface.

Note that properties which are objects (e.g., for overriding the prototype of built-in elements) are listed in a separate section below.

Window.caches Read only Secure context: Returns the CacheStorage object associated with the current context. This object enables functionality such as storing assets for offline use, and generating custom responses to requests.
Window.clientInformation Read only: An alias for Window.navigator.
Window.closed Read only: This property indicates whether the current window is closed or not.
Window.cookieStore Read only Secure context: Returns a reference to the CookieStore object for the current document context.
Window.credentialless Read only Experimental: Returns a boolean that indicates whether the current document was loaded inside a credentialless IFrame credentialless for more details.
Window.crossOriginIsolated Read only: Returns a boolean value that indicates whether the website is in a cross-origin isolation state.
Window.crypto Read only: Returns the Crypto object associated to the global object.
Window.customElements Read only: Returns a reference to the custom elements and get information about previously registered custom elements.
Window.devicePixelRatio Read only: Returns the ratio between physical pixels and device independent pixels in the current display.
Window.document Read only: Returns a reference to the document that the window contains.
Window.documentPictureInPicture Read only Experimental Secure context: Returns a reference to the document Picture-in-Picture window for the current document context.
Window.fence Read only Experimental: Returns a <fencedframe>.
Window.frameElement Read only: Returns the element in which the window is embedded, or null if the window is not embedded.
Window.frames Read only: Returns an array of the subframes in the current window.
Window.fullScreen Non-standard: This property indicates whether the window is displayed in full screen or not.
Window.history Read only: Returns a reference to the history object.
Window.indexedDB Read only: Provides a mechanism for applications to asynchronously access capabilities of indexed databases; returns an IDBFactory object.
Window.innerHeight Read only: Gets the height of the content area of the browser window including, if rendered, the horizontal scrollbar.
Window.innerWidth Read only: Gets the width of the content area of the browser window including, if rendered, the vertical scrollbar.
Window.isSecureContext Read only: Returns a boolean indicating whether the current context is secure (true) or not (false).
Window.launchQueue Read only Experimental: When a LaunchQueue class, which allows custom launch navigation handling to be implemented for the PWA.
Window.length Read only: Returns the number of frames in the window. See also window.frames.
Window.localStorage Read only: Returns a reference to the local storage object used to store data that may only be accessed by the origin that created it.
Window.location: Gets/sets the location, or current URL, of the window object.
Window.locationbar Read only: Returns the locationbar object.
Window.menubar Read only: Returns the menubar object.
Window.mozInnerScreenX Read only Non-standard: 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 Read only Non-standard: 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.name: Gets/sets the name of the window.
Window.navigation Read only Experimental: Returns the current window's associated Navigation API.
Window.navigator Read only: Returns a reference to the navigator object.
Window.opener: Returns a reference to the window that opened this current window.
Window.origin Read only: Returns the global object's origin, serialized as a string.
Window.originAgentCluster Read only Experimental: Returns true if this window belongs to an origin-keyed agent cluster.
Window.outerHeight Read only: Gets the height of the outside of the browser window.
Window.outerWidth Read only: Gets the width of the outside of the browser window.
Window.pageXOffset Read only: An alias for window.scrollX.
Window.pageYOffset Read only: An alias for window.scrollY.
Window.parent Read only: Returns a reference to the parent of the current window or subframe.
Window.performance Read only: Returns a performance-related data. See also Using Navigation Timing for additional information and examples.
Window.personalbar Read only: Returns the personalbar object.
Window.scheduler Read only: Returns the Prioritized Task Scheduling API.
Window.screen Read only: Returns a reference to the screen object associated with the window.
Window.screenLeft Read only: Both properties return the horizontal distance from the left border of the user's browser viewport to the left side of the screen.
Window.screenTop Read only: Both properties return the vertical distance from the top border of the user's browser viewport to the top side of the screen.
Window.scrollbars Read only: Returns the scrollbars object.
Window.scrollMaxX Non-standard Read only: The maximum offset that the window can be scrolled to horizontally, that is the document width minus the viewport width.
Window.scrollMaxY Non-standard Read only: The maximum offset that the window can be scrolled to vertically (i.e., the document height minus the viewport height).
Window.scrollX Read only: Returns the number of pixels that the document has already been scrolled horizontally.
Window.scrollY Read only: Returns the number of pixels that the document has already been scrolled vertically.
Window.self Read only: Returns an object reference to the window object itself.
Window.sessionStorage: Returns a reference to the session storage object used to store data that may only be accessed by the origin that created it.
Window.sharedStorage Read only Experimental Secure context: Returns the Shared Storage API.
Window.speechSynthesis Read only: Returns a Web Speech API speech synthesis functionality.
Window.statusbar Read only: Returns the statusbar object.
Window.toolbar Read only: Returns the toolbar object.
Window.top Read only: Returns a reference to the topmost window in the window hierarchy. This property is read only.
Window.trustedTypes Read only: Returns the Trusted Types API.
Window.visualViewport Read only: Returns a VisualViewport object which represents the visual viewport for a given window.
Window.window Read only: 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.

Deprecated properties

Window.event Deprecated Read only: Returns the current event, which is the event currently being handled by the JavaScript code's context, or undefined if no event is currently being handled. The Event object passed directly to event handlers should be used instead whenever possible.
Window.external Deprecated Read only: Returns an object with functions for adding external search providers to the browser.
Window.orientation Deprecated Read only: Returns the orientation in degrees (in 90 degree increments) of the viewport relative to the device's natural orientation.
Window.status Deprecated: Gets/sets the text in the statusbar at the bottom of the browser.

Instance methods

This interface inherits methods from the EventTarget interface.

Window.atob(): Decodes a string of data which has been encoded using base-64 encoding.
Window.alert(): Displays an alert dialog.
Window.blur() Deprecated: Sets focus away from the window.
Window.btoa(): Creates a base-64 encoded ASCII string from a string of binary data.
Window.cancelAnimationFrame(): Enables you to cancel a callback previously scheduled with Window.requestAnimationFrame.
Window.cancelIdleCallback(): Enables you to cancel a callback previously scheduled with Window.requestIdleCallback.
Window.clearInterval(): Cancels the repeated execution set using Window.setInterval().
Window.clearTimeout(): Cancels the delayed execution set using Window.setTimeout().
Window.close(): Closes the current window.
Window.confirm(): Displays a dialog with a message that the user needs to respond to.
Window.createImageBitmap(): Accepts a variety of different image sources, and returns a ImageBitmap. Optionally the source is cropped to the rectangle of pixels originating at (sx, sy) with width sw, and height sh.
Window.dump() Non-standard: Writes a message to the console.
Window.fetch(): Starts the process of fetching a resource from the network.
Window.find() Non-standard: Searches for a given string in a window.
Window.focus(): Sets focus on the current window.
Window.getComputedStyle(): Gets computed style for the specified element. Computed style indicates the computed values of all CSS properties of the element.
Window.getDefaultComputedStyle() Non-standard: Gets default computed style for the specified element, ignoring author stylesheets.
Window.getScreenDetails() Experimental Secure context: Returns a ScreenDetails object instance representing the details of all the screens available to the user's device.
Window.getSelection(): Returns the selection object representing the selected item(s).
Window.matchMedia(): Returns a MediaQueryList object representing the specified media query string.
Window.moveBy(): Moves the current window by a specified amount.
Window.moveTo(): Moves the window to the specified coordinates.
Window.open(): Opens a new window.
Window.postMessage(): Provides a secure means for one window to send a string of data to another window, which need not be within the same domain as the first.
Window.print(): Opens the Print Dialog to print the current document.
Window.prompt(): Returns the text entered by the user in a prompt dialog.
Window.queryLocalFonts() Experimental Secure context: Returns a FontData objects representing the font faces available locally.
Window.queueMicrotask(): Queues a microtask to be executed at a safe time prior to control returning to the browser's event loop.
Window.reportError(): Reports an error in a script, emulating an unhandled exception.
Window.requestAnimationFrame(): Tells the browser that an animation is in progress, requesting that the browser schedule a repaint of the window for the next animation frame.
Window.requestIdleCallback(): Enables the scheduling of tasks during a browser's idle periods.
Window.resizeBy(): Resizes the current window by a certain amount.
Window.resizeTo(): Dynamically resizes window.
Window.scroll(): Scrolls the window to a particular place in the document.
Window.scrollBy(): Scrolls the document in the window by the given amount.
Window.scrollByLines() Non-standard: Scrolls the document by the given number of lines.
Window.scrollByPages() Non-standard: Scrolls the current document by the specified number of pages.
Window.scrollTo(): Scrolls to a particular set of coordinates in the document.
Window.setInterval(): Schedules a function to execute every time a given number of milliseconds elapses.
Window.setTimeout(): Schedules a function to execute in a given amount of time.
Window.showDirectoryPicker() Experimental Secure context: Displays a directory picker which allows the user to select a directory.
Window.showOpenFilePicker() Experimental Secure context: Shows a file picker that allows a user to select a file or multiple files.
Window.showSaveFilePicker() Experimental Secure context: Shows a file picker that allows a user to save a file.
Window.sizeToContent() Non-standard: Sizes the window according to its content.
Window.stop(): This method stops window loading.
Window.structuredClone(): Creates a structured clone algorithm.

Deprecated methods

Window.back() Non-standard Deprecated: Moves back one in the window history. This method is deprecated; you should instead use history.back().
Window.captureEvents() Deprecated: Registers the window to capture all events of the specified type.
Window.clearImmediate() Non-standard Deprecated: Cancels the repeated execution set using setImmediate().
Window.forward() Non-standard Deprecated: Moves the window one document forward in the history. This method is deprecated; you should instead use history.forward().
Window.releaseEvents() Deprecated: Releases the window from trapping events of a specific type.
Window.requestFileSystem() Non-standard Deprecated: Lets a website or app gain access to a sandboxed file system for its own use.
Window.setImmediate() Non-standard Deprecated: Executes a function after the browser has finished other heavy tasks.
Window.setResizable() Non-standard Deprecated: Does nothing (no-op). Kept for backward compatibility with Netscape 4.x.
Window.showModalDialog() Non-standard Deprecated: Displays a modal dialog.
Window.webkitConvertPointFromNodeToPage() Non-standard Deprecated: Transforms a WebKitPoint from the node's coordinate system to the page's coordinate system.
Window.webkitConvertPointFromPageToNode() Non-standard Deprecated: Transforms a WebKitPoint from the page's coordinate system to the node's coordinate system.

Events

Listen to these events using Document contained in the window object.

error: Fired when a resource failed to load, or can't be used. For example, if a script has an execution error or an image can't be found or is invalid.
languagechange: Fired at the global scope object when the user's preferred language changes.
resize: Fired when the window has been resized.
storage: Fired when a storage area (localStorage or sessionStorage) has been modified in the context of another document.

Clipboard events

copy: Fired when the user initiates a copy action through the browser's user interface. Also available via the oncopy property.
cut: Fired when the user initiates a cut action through the browser's user interface. Also available via the oncut property.
paste: Fired when the user initiates a paste action through the browser's user interface. Also available via the onpaste property.

Connection events

offline: Fired when the browser has lost access to the network and the value of navigator.onLine has switched to false.
online: Fired when the browser has gained access to the network and the value of navigator.onLine has switched to true.

Device orientation events

devicemotion Secure context: Fired at a regular interval, indicating the amount of physical force of acceleration the device is receiving and the rate of rotation, if available.
deviceorientation Secure context: Fired when fresh data is available from the magnetometer orientation sensor about the current orientation of the device as compared to the Earth coordinate frame.
deviceorientationabsolute Secure context: Fired when fresh data is available from the magnetometer orientation sensor about the current absolute orientation of the device as compared to the Earth coordinate frame.

Focus events

blur: Fired when an element has lost focus.
focus: Fired when an element has gained focus.

Gamepad events

gamepadconnected: Fired when the browser detects that a gamepad has been connected or the first time a button/axis of the gamepad is used.
gamepaddisconnected: Fired when the browser detects that a gamepad has been disconnected.

History events

hashchange: Fired when the fragment identifier of the URL has changed (the part of the URL beginning with and following the # symbol).
pagehide: Sent when the browser hides the current document while in the process of switching to displaying in its place a different document from the session's history. This happens, for example, when the user clicks the Back button or when they click the Forward button to move ahead in session history.
pagereveal: Fired when a document is first rendered, either when loading a fresh document from the network or activating a document (either from prerender).
pageshow: Sent when the browser makes the document visible due to navigation tasks, including not only when the page is first loaded, but also situations such as the user navigating back to the page after having navigated to another within the same tab.
pageswap: Fired when a document is about to be unloaded due to a navigation.
popstate: Fired when the active history entry changes.

Load & unload events

beforeunload: Fired when the window, the document and its resources are about to be unloaded.
load: Fired when the whole page has loaded, including all dependent resources such as stylesheets images.
unload Deprecated: Fired when the document or a child resource is being unloaded.

Manifest events

appinstalled: Fired when the browser has successfully installed a page as an application.
beforeinstallprompt: Fired when a user is about to be prompted to install a web application.

Messaging events

message: Fired when the window receives a message, for example from a call to Window.postMessage() from another browsing context.
messageerror: Fired when a Window object receives a message that can't be deserialized.

Print events

afterprint: Fired after the associated document has started printing or the print preview has been closed.
beforeprint: Fired when the associated document is about to be printed or previewed for printing.

Promise rejection events

rejectionhandled: Sent every time a JavaScript Promise is rejected, regardless of whether or not there is a handler in place to catch the rejection.
unhandledrejection: Sent when a JavaScript Promise is rejected but there is no handler in place to catch the rejection.

Scroll events

scrollsnapchange Experimental: Fired on the scroll container at the end of a scrolling operation when a new scroll snap target has been selected.
scrollsnapchanging Experimental: Fired on the scroll container when the browser determines a new scroll snap target is pending, i.e. it will be selected when the current scroll gesture ends.

Deprecated events

orientationchange Deprecated: Fired when the orientation of the device has changed.
vrdisplayactivate Deprecated Non-standard: Fired when a display is able to be presented to.
vrdisplayconnect Deprecated Non-standard: Fired when a compatible VR device has been connected to the computer.
vrdisplaydisconnect Deprecated Non-standard: Fired when a compatible VR device has been disconnected from the computer.
vrdisplaydeactivate Deprecated Non-standard: Fired when a display can no longer be presented to.
vrdisplaypresentchange Deprecated Non-standard: Fired when the presenting state of a VR device changes — i.e. goes from presenting to not presenting, or vice versa.

Bubbled events

Not all events that bubble can reach the Window object. Only the following do and can be listened for on the Window object:

Listening for events on Window

HTML elements have three ways to listen for events:

Add an event listener to the element using the EventTarget.addEventListener method.
Assign an event handler to the element's oneventname property in JavaScript.
Add an on-prefixed attribute to the element in the HTML.

To listen for events on Window objects, in general, you can only use the first two methods, because Window has no corresponding HTML element. However, there's a specific group of events whose listeners can be added to the <frameset>) element that's owned by the Window's document, using the second or third methods. These events are:

afterprint
beforeprint
beforeunload
blur
error
focus
hashchange
languagechange
load
message
messageerror
offline
online
pagehide
pagereveal
pageshow
pageswap
popstate
rejectionhandled
resize
scroll
storage
unhandledrejection
unload

This means the following are strictly equivalent:

window.onresize = (e) => console.log(e.currentTarget);
document.body.onresize = (e) => console.log(e.currentTarget);

html

<body onresize="console.log(event.currentTarget)"></body>

In all three cases, you see the Window object logged as currentTarget.

Specifications

Specification

Specification
Product help The `Window` interface represents a window containing a JavaScript Reference and the \n \n \n EventTarget\n \n `CacheStorage` object associated with the current context. This object enables functionality such as storing assets for offline use, and generating custom responses to requests. \n\n `Window.cookieStore` Read only Secure context \n \n Returns a reference to the IFrame credentialless for more details. \n \n `Window.customElements` Read only \n \n Returns a reference to the `Window.document` Read only\n \n Returns a reference to the document that the window contains. \n \n `Fence` object instance for the current document context. Available only to documents embedded inside a `Window.fullScreen` \nNon-standard\n \n \n This property indicates whether the window is displayed in full screen or not. \n \n `Window.innerHeight` Read only \n \n Gets the height of the content area of the browser window including, if rendered, the horizontal scrollbar. \n \n progressive web app (PWA) is launched with a `window.frames`. \n\n `Window.menubar` Read only \n \n Returns the menubar object. \n \n `Window.navigation` Read only \nExperimental\n \n \n Returns the current `window`'s associated `Window.opener`\n \n Returns a reference to the window that opened this current window. \n \n `Window.outerWidth` Read only \n \n Gets the width of the outside of the browser window. \n \n `window.scrollY`. \n\n `timing` and `Window.personalbar` Read only \n \n Returns the personalbar object. \n \n `Window.screen` Read only \n \n Returns a reference to the screen object associated with the window. \n \n `Window.screenTop` Read only \n \n Both properties return the vertical distance from the top border of the user's browser viewport to the top side of the screen. \n \n `Window.scrollX` Read only \n \n Returns the number of pixels that the document has already been scrolled horizontally. \n \n `Window.sharedStorage` Read only \nExperimental\n Secure context \n \n Returns the `SpeechSynthesis` object, which is the entry point into using `Window.top` Read only\n \n Returns a reference to the topmost window in the window hierarchy. This property is read only. \n \n `Window.visualViewport` Read only \n \n Returns a `Window.event` \nDeprecated\n Read only\n \n Returns the current event, which is the event currently being handled by the JavaScript code's context, or `undefined` if no event is currently being handled. The `Window.status` \nDeprecated\n\n \n Gets/sets the text in the statusbar at the bottom of the browser. \n \n"}},{"type":"prose","value":{"id":"instance_methods","title":"Instance methods","isH3":false,"content":" This interface inherits methods from the `Window.blur()` \nDeprecated\n\n \n Sets focus away from the window. \n \n `Window.cancelIdleCallback()` \n \n Enables you to cancel a callback previously scheduled with `Window.clearTimeout()`\n \n Cancels the delayed execution set using `Window.createImageBitmap()`\n \n Accepts a variety of different image sources, and returns a `Window.fetch()`\n \n Starts the process of fetching a resource from the network. \n \n `Window.getDefaultComputedStyle()` \nNon-standard\n \n \n Gets default computed style for the specified element, ignoring author stylesheets. \n \n `Window.getSelection()` \n \n Returns the selection object representing the selected item(s). \n \n `Window.moveTo()` \n \n Moves the window to the specified coordinates. \n \n `Window.prompt()` \n \n Returns the text entered by the user in a prompt dialog. \n \n `Window.queueMicrotask()` \n \n Queues a microtask to be executed at a safe time prior to control returning to the browser's event loop. \n \n `Window.resizeBy()` \n \n Resizes the current window by a certain amount. \n \n `Window.scrollByLines()` \nNon-standard\n \n \n Scrolls the document by the given number of lines. \n \n `Window.setTimeout()` \n \n Schedules a function to execute in a given amount of time. \n \n `Window.sizeToContent()` \nNon-standard\n \n \n Sizes the window according to its content. \n \n structured clone algorithm. \n\n"}},{"type":"prose","value":{"id":"deprecated_methods","title":"Deprecated methods","isH3":true,"content":" \n `Window.clearImmediate()` \nNon-standard\n \nDeprecated\n \n \n Cancels the repeated execution set using `setImmediate()`. \n \n `Window.requestFileSystem()` \nNon-standard\n \nDeprecated\n \n \n Lets a website or app gain access to a sandboxed file system for its own use. \n \n `Window.webkitConvertPointFromNodeToPage()` \nNon-standard\n \nDeprecated\n \n \n Transforms a `addEventListener()` or by assigning an event listener to the `oneventname` property of this interface. In addition to the events listed below, many events can bubble from the `resize` \n \n Fired when the window has been resized. \n \n `cut` \n \n Fired when the user initiates a cut action through the browser's user interface.\nAlso available via the `offline`\n \n Fired when the browser has lost access to the network and the value of `navigator.onLine` has switched to `false`. \n \n `deviceorientationabsolute` Secure context \n \n Fired when fresh data is available from the magnetometer orientation sensor about the current absolute orientation of the device as compared to the Earth coordinate frame. \n \n"}},{"type":"prose","value":{"id":"focus_events","title":"Focus events","isH3":true,"content":" \n `gamepaddisconnected` \n \n Fired when the browser detects that a gamepad has been disconnected. \n \n "}},{"type":"prose","value":{"id":"history_events","title":"History events","isH3":true,"content":" \n back/forward cache (bfcache) or `popstate` \n \n Fired when the active history entry changes. \n \n "}},{"type":"prose","value":{"id":"load_unload_events","title":"Load & unload events","isH3":true,"content":" \n `appinstalled` \n \n Fired when the browser has successfully installed a page as an application. \n \n `messageerror` \n \n Fired when a `Window` object receives a message that can't be deserialized. \n \n "}},{"type":"prose","value":{"id":"print_events","title":"Print events","isH3":true,"content":" \n `Promise` is rejected, regardless of whether or not there is a handler in place to catch the rejection. \n\n `scrollsnapchanging` \nExperimental\n \n \n Fired on the scroll container when the browser determines a new scroll snap target is pending, i.e. it will be selected when the current scroll gesture ends. \n \n "}},{"type":"prose","value":{"id":"deprecated_events","title":"Deprecated events","isH3":true,"content":" \n `vrdisplaydisconnect` \nDeprecated\n \nNon-standard\n \n \n Fired when a compatible VR device has been disconnected from the computer. \n \n `beforeinput` \n `canplaythrough` \n `contextlost` \n `cuechange` \n `dragend` \n `dragstart` \n `ended` \n `keydown` \n `loadedmetadata` \n `mouseleave` \n `mouseup` \n `playing` \n `scrollend` \n `select` \n `suspend` \n `waiting` \n `<body>` (or the deprecated `caches` `crossOriginIsolated` `document` `fence`\nExperimental\n `history` `isSecureContext` `location` `mozInnerScreenY`\nNon-standard\n `opener` `outerHeight` `personalbar` `screenTop` `scrollMaxX`\nNon-standard\n `self` `status`\nDeprecated\n `trustedTypes` `atob()` `cancelAnimationFrame()` `clearInterval()` `createImageBitmap()` `focus()` `getScreenDetails()`\nExperimental\n `moveTo()` `prompt()` `reportError()` `resizeBy()` `scrollByLines()`\nNon-standard\n `setInterval()` `showModalDialog()`\nNon-standard\n\nDeprecated\n `stop()` `afterprint` `beforeunload` `devicemotion` `focus` `languagechange` `offline` `pagereveal` `popstate` `scrollsnapchanging`\nExperimental\n `vrdisplayactivate`\nNon-standard\n\nDeprecated\n `vrdisplaypresentchange`\nNon-standard\n\nDeprecated\n Inheritance `AbstractRange` `Comment` `DOMImplementation` `DOMRect` `DocumentType` `HTMLCollection` `Node` `Range` `TextEncoder` `XMLDocument` ","source":{"folder":"en-us/web/api/window","github_url":"https://github.com/mdn/content/blob/main/files/en-us/web/api/window/index.md","last_commit_url":"https://github.com/mdn/content/commit/05187b0fecf39b9176d4a101623589309cf44dd0","filename":"index.md"},"summary":"The Window interface represents a window containing a DOM document; the document property points to the DOM document loaded in that window.","title":"Window","toc":[{"text":"Instance properties","id":"instance_properties"},{"text":"Instance methods","id":"instance_methods"},{"text":"Events","id":"events"},{"text":"Interfaces","id":"interfaces"},{"text":"Listening for events on Window","id":"listening_for_events_on_window"},{"text":"Specifications","id":"specifications"},{"text":"Browser compatibility","id":"browser_compatibility"}],"baseline":{"baseline":"high","baseline_low_date":"2015-07-29","baseline_high_date":"2018-01-29","support":{"chrome":"1","chrome_android":"18","edge":"12","firefox":"1","firefox_android":"4","safari":"1","safari_ios":"1"},"asterisk":true},"browserCompat":["api.Window"],"pageType":"web-api-interface"}} Follow Lee on X/Twitter - Father, Husband, Serial builder creating AI, crypto, games & web tools. We are friends :) AI Will Come To Life! Check out: eBank.nz (Art Generator) \| Netwrck.com (AI Tools) \| Text-Generator.io (AI API) \| BitBank.nz (Crypto AI) \| ReadingTime (Kids Reading) \| RewordGame \| BigMultiplayerChess \| WebFiddle \| How.nz \| Helix AI Assistant

Product help

JavaScript Reference and the \n \n \n EventTarget\n \n CacheStorage object associated with the current context. This object enables functionality such as storing assets for offline use, and generating custom responses to requests.

\n\n

Window.cookieStore Read only Secure context

Returns a reference to the IFrame credentialless for more details.

Window.customElements Read only

Returns a reference to the Window.document Read only\n

Returns a reference to the document that the window contains.

Fence object instance for the current document context. Available only to documents embedded inside a Window.fullScreen \n\n

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

Window.innerHeight Read only

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

progressive web app (PWA) is launched with a window.frames.

\n\n

Window.menubar Read only

Returns the menubar object.

Window.navigation Read only \n\n

Returns the current window's associated Window.opener\n

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

Window.outerWidth Read only

Gets the width of the outside of the browser window.

window.scrollY.

\n\n

timing and Window.personalbar Read only

Returns the personalbar object.

Window.screen Read only

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

Window.screenTop Read only

Both properties return the vertical distance from the top border of the user's browser viewport to the top side of the screen.

Window.scrollX Read only

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

Window.sharedStorage Read only \n\n Secure context

Returns the SpeechSynthesis object, which is the entry point into using Window.top Read only\n

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

Window.visualViewport Read only

Returns a Window.event \nDeprecated\n Read only\n

Returns the current event, which is the event currently being handled by the JavaScript code's context, or undefined if no event is currently being handled. The Window.status \nDeprecated\n\n

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

\n"}},{"type":"prose","value":{"id":"instance_methods","title":"Instance methods","isH3":false,"content":"

This interface inherits methods from the Window.blur() \nDeprecated\n\n

\n
Sets focus away from the window.
\n

\n
Window.cancelIdleCallback()
\n
\n
Enables you to cancel a callback previously scheduled with Window.clearTimeout()\n
\n
Cancels the delayed execution set using Window.createImageBitmap()\n
\n
Accepts a variety of different image sources, and returns a Window.fetch()\n
\n
Starts the process of fetching a resource from the network.
\n
\n
Window.getDefaultComputedStyle() \nNon-standard\n
\n
\n
Gets default computed style for the specified element, ignoring author stylesheets.
\n
\n
Window.getSelection()
\n
\n
Returns the selection object representing the selected item(s).
\n
\n
Window.moveTo()
\n
\n
Moves the window to the specified coordinates.
\n
\n
Window.prompt()
\n
\n
Returns the text entered by the user in a prompt dialog.
\n
\n
Window.queueMicrotask()
\n
\n
Queues a microtask to be executed at a safe time prior to control returning to the browser's event loop.
\n
\n
Window.resizeBy()
\n
\n
Resizes the current window by a certain amount.
\n
\n
Window.scrollByLines() \nNon-standard\n
\n
\n
Scrolls the document by the given number of lines.
\n
\n
Window.setTimeout()
\n
\n
Schedules a function to execute in a given amount of time.
\n
\n
Window.sizeToContent() \nNon-standard\n
\n
\n
Sizes the window according to its content.
\n
\n
structured clone algorithm.
\n\n"}},{"type":"prose","value":{"id":"deprecated_methods","title":"Deprecated methods","isH3":true,"content":"
\n
Window.clearImmediate() \nNon-standard\n \nDeprecated\n
\n
\n
Cancels the repeated execution set using setImmediate().
\n
\n
Window.requestFileSystem() \nNon-standard\n \nDeprecated\n
\n
\n
Lets a website or app gain access to a sandboxed file system for its own use.
\n
\n
Window.webkitConvertPointFromNodeToPage() \nNon-standard\n \nDeprecated\n
\n
\n
Transforms a addEventListener() or by assigning an event listener to the oneventname property of this interface. In addition to the events listed below, many events can bubble from the resize
\n
\n
Fired when the window has been resized.
\n
\n
cut
\n
\n
Fired when the user initiates a cut action through the browser's user interface.\nAlso available via the offline\n
\n
Fired when the browser has lost access to the network and the value of navigator.onLine has switched to false.
\n
\n
deviceorientationabsolute Secure context
\n
\n
Fired when fresh data is available from the magnetometer orientation sensor about the current absolute orientation of the device as compared to the Earth coordinate frame.
\n
\n"}},{"type":"prose","value":{"id":"focus_events","title":"Focus events","isH3":true,"content":"
\n
gamepaddisconnected
\n
\n
Fired when the browser detects that a gamepad has been disconnected.
\n
\n
"}},{"type":"prose","value":{"id":"history_events","title":"History events","isH3":true,"content":"
\n
back/forward cache (bfcache) or popstate
\n
\n
Fired when the active history entry changes.
\n
\n
"}},{"type":"prose","value":{"id":"load_unload_events","title":"Load & unload events","isH3":true,"content":"
\n
appinstalled
\n
\n
Fired when the browser has successfully installed a page as an application.
\n
\n
messageerror
\n
\n
Fired when a Window object receives a message that can't be deserialized.
\n
\n
"}},{"type":"prose","value":{"id":"print_events","title":"Print events","isH3":true,"content":"
\n
Promise is rejected, regardless of whether or not there is a handler in place to catch the rejection.
\n\n
scrollsnapchanging \nExperimental\n
\n
\n
Fired on the scroll container when the browser determines a new scroll snap target is pending, i.e. it will be selected when the current scroll gesture ends.
\n
\n
"}},{"type":"prose","value":{"id":"deprecated_events","title":"Deprecated events","isH3":true,"content":"
\n
vrdisplaydisconnect \nDeprecated\n \nNon-standard\n
\n
\n
Fired when a compatible VR device has been disconnected from the computer.
\n
\n
beforeinput

\n
canplaythrough
\n
contextlost
\n
cuechange
\n
dragend
\n
dragstart
\n
ended
\n
keydown
\n
loadedmetadata
\n
mouseleave
\n
mouseup
\n
playing
\n
scrollend
\n
select
\n
suspend
\n
waiting
\n
<body> (or the deprecated caches
crossOriginIsolated
document
fence\nExperimental\n
history
isSecureContext
location
mozInnerScreenY\nNon-standard\n
opener
outerHeight
personalbar
screenTop
scrollMaxX\nNon-standard\n
self
status\nDeprecated\n
trustedTypes
atob()
cancelAnimationFrame()
clearInterval()
createImageBitmap()
focus()
getScreenDetails()\nExperimental\n
moveTo()
prompt()
reportError()
resizeBy()
scrollByLines()\nNon-standard\n
setInterval()
showModalDialog()\nNon-standard\n\nDeprecated\n
stop()
afterprint
beforeunload
devicemotion
focus
languagechange
offline
pagereveal
popstate
scrollsnapchanging\nExperimental\n
vrdisplayactivate\nNon-standard\n\nDeprecated\n
vrdisplaypresentchange\nNon-standard\n\nDeprecated\n
Inheritance
AbstractRange
Comment
DOMImplementation
DOMRect
DocumentType
HTMLCollection
Node
Range
TextEncoder
XMLDocument
","source":{"folder":"en-us/web/api/window","github_url":"https://github.com/mdn/content/blob/main/files/en-us/web/api/window/index.md","last_commit_url":"https://github.com/mdn/content/commit/05187b0fecf39b9176d4a101623589309cf44dd0","filename":"index.md"},"summary":"The Window interface represents a window containing a DOM document; the document property points to the DOM document loaded in that window.","title":"Window","toc":[{"text":"Instance properties","id":"instance_properties"},{"text":"Instance methods","id":"instance_methods"},{"text":"Events","id":"events"},{"text":"Interfaces","id":"interfaces"},{"text":"Listening for events on Window","id":"listening_for_events_on_window"},{"text":"Specifications","id":"specifications"},{"text":"Browser compatibility","id":"browser_compatibility"}],"baseline":{"baseline":"high","baseline_low_date":"2015-07-29","baseline_high_date":"2018-01-29","support":{"chrome":"1","chrome_android":"18","edge":"12","firefox":"1","firefox_android":"4","safari":"1","safari_ios":"1"},"asterisk":true},"browserCompat":["api.Window"],"pageType":"web-api-interface"}}
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