The Navigator interface represents the state and the identity of the user agent. It allows scripts to query it and to register themselves to carry on some activities.

A Navigator object can be retrieved using the read-only window.navigator property.


Doesn't inherit any properties.

Standard properties

Navigator.connection Read only

Provides a NetworkInformation object containing information about the network connection of a device.

Navigator.cookieEnabled Read only

Returns false if setting a cookie will be ignored and true otherwise.

Navigator.credentials Read only

Returns the CredentialsContainer interface which exposes methods to request credentials and notify the user agent when interesting events occur such as successful sign in or sign out.

Navigator.deviceMemory Read only

Returns the amount of device memory in gigabytes. This value is an approximation given by rounding to the nearest power of 2 and dividing that number by 1024.

Navigator.geolocation Read only

Returns a Geolocation object allowing accessing the location of the device.

Navigator.hid Read only

Returns an HID object providing methods for connecting to HID devices, listing attached HID devices, and event handlers for connected HID devices.

Navigator.hardwareConcurrency Read only

Returns the number of logical processor cores available.

Navigator.keyboard Read only

Returns a Keyboard object which provides access to functions that retrieve keyboard layout maps and toggle capturing of key presses from the physical keyboard.

Navigator.language Read only

Returns a DOMString representing the preferred language of the user, usually the language of the browser UI. The null value is returned when this is unknown.

Navigator.languages Read only

Returns an array of DOMString representing the languages known to the user, by order of preference.

Navigator.locks Read only

Returns a LockManager object that provides methods for requesting a new Lock object and querying for an existing Lock object.

Navigator.maxTouchPoints Read only

Returns the maximum number of simultaneous touch contact points are supported by the current device.

Navigator.mediaCapabilities Read only

Returns a MediaCapabilities object that can expose information about the decoding and encoding capabilities for a given format and output capabilities.

Navigator.mediaDevices Read only

Returns a reference to a MediaDevices object which can then be used to get information about available media devices (MediaDevices.enumerateDevices()), find out what constrainable properties are supported for media on the user's computer and user agent (MediaDevices.getSupportedConstraints()), and to request access to media using MediaDevices.getUserMedia().

Navigator.mediaSession Read only

Returns MediaSession object which can be used to provide metadata that can be used by the browser to present information about the currently-playing media to the user, such as in a global media controls UI.

Navigator.onLine Read only

Returns a boolean value indicating whether the browser is working online.

Navigator.permissions Read only

Returns a Permissions object that can be used to query and update permission status of APIs covered by the Permissions API.

Navigator.presentation Read only

Returns a reference to the Presentation API.

Navigator.serial Read only

Returns a Serial object, which represents the entry point into the Web Serial API to enable the control of serial ports.

Navigator.serviceWorker Read only

Returns a ServiceWorkerContainer object, which provides access to registration, removal, upgrade, and communication with the ServiceWorker objects for the associated document. Read only

Returns the singleton StorageManager object used for managing persistence permissions and estimating available storage on a site-by-site/app-by-app basis.

Navigator.userAgent Read only

Returns the user agent string for the current browser.

Navigator.userAgentData Read only

Returns a NavigatorUAData object, which gives access to information about the browser and operating system of the user.

Navigator.vendor Read only

Returns the vendor name of the current browser (e.g., "Netscape6").

Navigator.webdriver Read only

Indicates whether the user agent is controlled by automation.

Navigator.windowControlsOverlay Read only

Returns the WindowControlsOverlay interface which exposes information about the geometry of the title bar in desktop Progressive Web Apps, and an event to know whenever it changes.

Navigator.xr Read only

Returns XRSystem object, which represents the entry point into the WebXR API.

Non-standard properties


Returns the build identifier of the browser. In modern browsers this property now returns a fixed timestamp as a privacy measure, e.g. 20181001000000 in Firefox 64 onwards.

Navigator.contacts Read only

Returns a ContactsManager interface which allows users to select entries from their contact list and share limited details of the selected entries with a website or application.


Returns an empty string. In Netscape 4.7x, returns "US & CA domestic policy" or "Export policy".


Returns a boolean indicating whether the browser is running in standalone mode. Available on Apple's iOS Safari only.

Navigator.wakeLock Read only

Returns a WakeLock interface you can use to request screen wake locks and prevent screen from dimming, turning off, or showing a screen saver.

Deprecated properties

Navigator.appCodeName Read only

Returns the internal "code" name of the current browser. Do not rely on this property to return the correct value.

Navigator.appName Read only

Returns a DOMString with the official name of the browser. Do not rely on this property to return the correct value.

Navigator.appVersion Read only

Returns the version of the browser as a DOMString. Do not rely on this property to return the correct value.

Navigator.activeVRDisplays Read only

Returns an array containing every VRDisplay object that is currently presenting (VRDisplay.ispresenting is true).

Navigator.battery Read only

Returns a BatteryManager object you can use to get information about the battery charging status.

Navigator.doNotTrack Read only

Reports the value of the user's do-not-track preference. When this value is "yes", your web site or application should not track the user.

Navigator.mimeTypes Read only

Returns an MimeTypeArray listing the MIME types supported by the browser.

Navigator.oscpu Read only

Returns a string that represents the current operating system.

Navigator.platform Read only

Returns a string representing the platform of the browser. Do not rely on this function to return a significant value.

Navigator.plugins Read only

Returns a PluginArray listing the plugins installed in the browser.

Navigator.product Read only

Always returns 'Gecko', on any browser. This property is kept only for compatibility purpose.

Navigator.productSub Read only

Returns the build number of the current browser (e.g., "20060909").

Navigator.vendorSub Read only

Returns the vendor version number (e.g. "6.1").


Doesn't inherit any method.


Returns true if a call to Navigator.share() would succeed.


Clears a badge on the current app's icon and returns a Promise that resolves with undefined.


Returns a promise that resolves with a BatteryManager object that returns information about the battery charging status.

Navigator.javaEnabled() Read only

Returns false.


Allows web sites to register themselves as a possible handler for a given protocol.


Returns a Promise for a MediaKeySystemAccess object.


Used to asynchronously transfer a small amount of data using HTTP from the User Agent to a web server.


Sets a badge on the icon associated with this app and returns a Promise that resolves with undefined.


Invokes the native sharing mechanism of the current platform.


Causes vibration on devices with support for it. Does nothing if vibration support isn't available.

Deprecated methods


Returns a promise that resolves to an array of VRDisplay objects representing any available VR devices connected to the computer.


After having prompted the user for permission, returns the audio or video stream associated to a camera or microphone on the local computer.


Returns false. JavaScript taint/untaint functions removed in JavaScript 1.2.


HTML Standard (HTML)
# the-navigator-object

Browser compatibility

BCD tables only load in the browser