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 property, but implements those defined in NavigatorID (en-US), NavigatorLanguage, NavigatorOnLine, NavigatorGeolocation (en-US), NavigatorPlugins, NavigatorUserMedia, and NetworkInformation (en-US).


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 (en-US) 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 (en-US). Do not rely on this property to return the correct value.
Navigator.battery (en-US) Read only
Returns a BatteryManager (en-US) object you can use to get information about the battery charging status.
NetworkInformation.connection (en-US) Read only
Provides a Connection (en-US) with information about the network connection of a device.
NavigatorGeolocation.geolocation (en-US) Read only
Returns a Geolocation (en-US) object allowing accessing the location of the device.
NavigatorPlugins.javaEnabled Read only
Returns a Boolean (en-US) flag indicating whether the host browser is Java-enabled or not.
NavigatorLanguage.language Read only
Returns a DOMString (en-US) 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 (en-US) Read only
Returns an array of DOMString (en-US) representing the languages known to the user, by order of preference.
NavigatorPlugins.mimeTypes Read only
Returns an MimeTypeArray (en-US) listing the MIME types supported by the browser.
NavigatorOnLine.onLine Read only
Returns a Boolean (en-US) indicating whether the browser is working online.
Returns a string that represents the current operating system.
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 (en-US) 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.
NavigatorID.userAgent (en-US) Read only
Returns the user agent string for the current browser.
Navigator.serviceWorker (en-US) Read only
Returns a ServiceWorkerContainer (en-US) object, which provides access to registration, removal, upgrade, and communication with the ServiceWorker (en-US) objects for the associated document.


Returns the build identifier of the browser (e.g., "2006090803").
Returns a boolean indicating whether cookies are enabled in the browser or not.
navigator.doNotTrack (en-US)
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.
Returns the id object which you can use to add support for BrowserID to your web site.
Returns an Apps object you can use to install, manage, and control Open Web apps.
The navigator.mozAudioChannelManager object provides access to the mozAudioChannelManager interface, which is used to manage your Firefox OS device's audio channels, including setting what channel's volume to affect when the volume buttons are pressed inside a particular app.
navigator.mozNotification Wycofywany Gecko 22
Returns a notification object you can use to deliver notifications to the user from your web application.
The Object, returned by the navigator.mozSocial property, is available within the social media provider's panel to provide functionality it may need.
Returns the build number of the current browser (e.g., "20060909").
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.
Returns the vendor name of the current browser (e.g., "Netscape6").
Returns the vendor version number (e.g. "6.1").
Returns a PointerLock object for the Mouse Lock API.


Doesn't inherit any method, but implements those defined in NavigatorID (en-US), NavigatorContentUtils, NavigatorUserMedia, and NavigatorStorageUtils.


After having prompted the user for permission, returns the audio or video stream associated to a camera or microphone on the local computer.
Allows web sites to register themselves as a possible handler for a given MIME type.
Allows web sites to register themselves as a possible handler for a given protocol.
NavigatorID.taintEnabled() (en-US) Wycofywany Gecko 1.7.8 Przestarzały Gecko 9.0
Returns false. JavaScript taint/untaint functions removed in JavaScript 1.2.
Navigator.vibrate() (en-US)
Causes vibration on devices with support for it. Does nothing if vibration support isn't available.

Non standard

Lets code check to see if the document at a given URI is available without using the network.
Allows in-app payment.
navigator.preference Przestarzały Gecko 2.0
Sets a user preference. This method is only available to privileged code and is obsolete; you should use the XPCOM Preferences API instead.
Request a wake lock for a resource. A wake lock prevents a specific part of a device from being turned off automatically.