Navigator

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.

Properties

Doesn't inherit any properties, but implements those defined in NavigatorID, NavigatorLanguage, NavigatorOnLine, NavigatorContentUtils, NavigatorStorage, NavigatorStorageUtils, NavigatorConcurrentHardware, NavigatorPlugins, and NavigatorUserMedia.

Standard

NavigatorID.appCodeName Read only

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

NavigatorID.appName Read only

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

NavigatorID.appVersion Read only

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

Navigator.battery Read only

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

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.geolocation Read only

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

NavigatorConcurrentHardware.hardwareConcurrency Read only

Returns the number of logical processor cores available.

NavigatorPlugins.javaEnabled Read only

Returns a Boolean flag indicating whether the host browser is Java-enabled or not.

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.

NavigatorLanguage.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.

NavigatorLanguage.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 which provides methods for requesting a new Lock object and querying for an existing Lock object

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.maxTouchPoints Read only

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

NavigatorPlugins.mimeTypes Read only

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

Navigator.onLine Read only

Returns a Boolean 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.

NavigatorID.platform Read only

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

NavigatorPlugins.plugins Read only

Returns a PluginArray listing the plugins installed in the browser.

NavigatorID.product Read only

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

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.

NavigatorStorage.storage 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.

NavigatorID.userAgent Read only

Returns the user agent string for the current browser.

Navigator.xr Read only

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

Non-standard

Navigator.buildID

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.credentials

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.doNotTrack

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.mediaDevices

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

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.mozNotification Deprecated since Gecko 22

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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.

Navigator.webkitNotification

Returns a notification object you can use to deliver notifications to the user from your web application.

Navigator.oscpu

Returns a string that represents the current operating system.

Navigator.productSub

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

Navigator.securitypolicy

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

Navigator.standalone

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

Navigator.storageQuota Read only

Returns a StorageQuota interface which provides means to query and request storage usage and quota information.

Navigator.vendor

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

Navigator.vendorSub

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

Navigator.webkitPointer

Returns a PointerLock object for the Mouse Lock API.

Methods

Doesn't inherit any method, but implements those defined in NavigatorID, NavigatorContentUtils, NavigatorUserMedia, and NavigatorStorageUtils.

Standard

Navigator.canShare()

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

Navigator.getUserMedia()

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

Navigator.registerContentHandler() Obsolete since Gecko 59

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

Navigator.registerProtocolHandler()

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

Navigator.requestMediaKeySystemAccess()

Returns a Promise for a MediaKeySystemAccess object.

Navigator.sendBeacon()

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

Navigator.share()

Invokes the native sharing mechanism of the current platform.

NavigatorID.taintEnabled() Deprecated since Gecko 1.7.8 Obsolete since Gecko 9.0

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

Navigator.vibrate()

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

Non-standard

Navigator.mozIsLocallyAvailable()

Lets code check to see if the document at a given URI is available without using the network.

Specifications

Browser compatibility