The WorkerNavigator interface represents a subset of the Navigator interface allowed to be accessed from a Worker. Such an object is initialized for each worker and is available via the self.navigator property.
The WorkerNavigator interface represents a subset of the Navigator interface allowed to be accessed from a Worker. Such an object is initialized for each worker and is available via the self.navigator property.
The WorkerNavigator interface doesn't inherit any property.
WorkerNavigator.appCodeName Deprecated Read only
Always returns 'Mozilla', in any browser. This property is kept only for compatibility purposes.
WorkerNavigator.appName Deprecated Read only
Returns the official name of the browser. Do not rely on this property to return the correct value.
WorkerNavigator.appVersion Deprecated Read only
Returns the version of the browser as a string. Do not rely on this property to return the correct value.
WorkerNavigator.connection Read only
Provides a NetworkInformation object containing information about the network connection of a device.
WorkerNavigator.globalPrivacyControl Read only Experimental
Returns a boolean indicating a user's consent to their information being shared or sold.
WorkerNavigator.gpu Read only Experimental
Returns the GPU object for the current worker context. The entry point for the WebGPU API.
WorkerNavigator.hardwareConcurrency Read only
Returns the number of logical processor cores available.
WorkerNavigator.language Read only
Returns a string representing the preferred language of the user, usually the language of the browser UI. The null value is returned when this is unknown.
WorkerNavigator.languages Read only
Returns an array of strings representing the languages known to the user, by order of preference.
WorkerNavigator.locks Read only
Returns a LockManager object which provides methods for requesting a new Lock object and querying for an existing Lock object.
WorkerNavigator.mediaCapabilities Read only
Returns a MediaCapabilities object that can expose information about the decoding and encoding capabilities for a given format and output capabilities.
WorkerNavigator.onLine Read only
Returns a boolean value indicating whether the browser is online.
WorkerNavigator.permissions Read only
Returns a Permissions object that can be used to query and update permission status of APIs covered by the Permissions API.
WorkerNavigator.platform Deprecated Read only
Returns a string representing the platform of the browser. Do not rely on this property to return the correct value.
WorkerNavigator.product Deprecated Read only
Always returns 'Gecko', on any browser. This property is kept only for compatibility purposes.
WorkerNavigator.serial Read only Experimental
Returns a Serial object, which represents the entry point into the Web Serial API to enable the control of serial ports.
WorkerNavigator.storage Read only
Returns a StorageManager interface for managing persistence permissions and estimating available storage.
WorkerNavigator.userAgent Read only
Returns the user agent string for the current browser.
WorkerNavigator.userAgentData Read only Experimental
Returns a NavigatorUAData object, which gives access to information about the browser and operating system of the user.
The WorkerNavigator interface neither inherits nor implements any method.
| Specification |
|---|
| HTML Standard # the-workernavigator-object |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
WorkerNavigator |
4 | 12 | 3.5 | 10 | ≤12.1 | 4 | 4.4 | 18 | 4 | ≤12.1 | 5 | 1.0 |
appCodeName |
4 | 12 | 3.5 | 10 | 15 | 10 | 4.4 | 18 | 4 | 14 | 10 | 1.0 |
appName |
4 | 12 | 3.5 | 10 | ≤12.1 | 4 | 4.4 | 18 | 4 | ≤12.1 | 5 | 1.0 |
appVersion |
4 | 12 | 3.5 | 10 | ≤12.1 | 4 | 4.4 | 18 | 4 | ≤12.1 | 5 | 1.0 |
connection |
61 | 79 | No | No | 48 | No | 50 | 38 | 53–99 | 37 | No | 3.0 |
deviceMemory |
65 | 79 | No | No | 52 | No | 65 | 65 | No | 47 | No | 9.0 |
globalPrivacyControl |
No | No | previewOpt-in to GPC by setting the preferenceprivacy.globalprivacycontrol.enabled to true. |
No | No | No | No | No | NoOpt-in to GPC by setting the preferenceprivacy.globalprivacycontrol.enabled to true. |
No | No | No |
gpu |
113Currently supported on ChromeOS, macOS, and Windows only. |
113Currently supported on ChromeOS, macOS, and Windows only. |
No | No | 99Currently supported on ChromeOS, macOS, and Windows only. |
No | No | No | No | No | No | No |
hardwareConcurrency |
37 | 15 | 48 | No | 24 | 10.1–11 | 37 | 37 | 48 | 24 | 10.3–11 | 3.0 |
language |
4 | 12 | 3.5Before Firefox 4, this property's value was also part of the user agent string, as reported bynavigator.userAgent. Starting in Firefox 5, this property's value is based on the value of the Accept-Language HTTP header. |
11Closest available (non-standard) properties areuserLanguage and browserLanguage. |
4 | 10 | 4.4 | 18 | 4 | 10.1 | 10 | 1.0 |
languages |
37Before Chrome 65,navigator.languages[0] is not guaranteed to equal navigator.language. |
16 | 32In Firefox, thenavigator.languages property's value is taken from the intl.accept_languages preference. |
NoClosest available (non-standard) properties areuserLanguage and browserLanguage. |
24 | 10.1 | 37Before version 65,navigator.languages[0] is not guaranteed to equal navigator.language. |
37Before Chrome 65,navigator.languages[0] is not guaranteed to equal navigator.language. |
32In Firefox, thenavigator.languages property's value is taken from the intl.accept_languages preference. |
24 | 10.3 | 3.0 |
locks |
69 | 79 | 96 | No | 56 | 15.4 | 69 | 69 | 96 | 48 | 15.4 | 10.0 |
mediaCapabilities |
76 | 79 | 63 | No | 63 | 15.4 | 76 | 76 | 63 | 54 | 15.4 | 12.0 |
onLine |
4 | 12 | 3.5Since Firefox 4 the browser returnstrue when 'Work Offline' mode is disabled and false when it is enabled, regardless of actual connectivity. Since Firefox 41, on OS X and Windows, the returned values follow the actual network connectivity, unless 'Work offline' mode is selected (where it will always return false). |
10 | 10.6From Opera 11.1 until Opera 12.1, the browser returnstrue when 'Work Offline' mode is disabled and false when it is enabled, regardless of actual connectivity. |
4 | 4.4Can incorrectly return true, see bug 811122. |
18 | 4 | 11From Opera 11.1 until Opera 12.1, the browser returnstrue when 'Work Offline' mode is disabled and false when it is enabled, regardless of actual connectivity. |
5 | 1.0 |
permissions |
43 | 79 | No | No | 30 | 16.4 | No | 43 | No | 30 | 16.4 | 4.0 |
platform |
4 | 12 | 3.5["Before Firefox 69,platform would report running on a 32-bit CPU if running the 32-bit version of Firefox on a 64-bit system.", "You can override the value returned by platform by setting the preference general.platform.override to the string you wish to be returned instead."] |
10 | ≤12.1 | 4 | 4.4 | 18 | 4 | ≤12.1 | 5 | 1.0 |
product |
4 | 12 | 3.5 | 11 | 15 | 10 | 4.4 | 18 | 4 | 14 | 10 | 1.0 |
serial |
89 | 89 | No | No | No | No | No | No | No | No | No | No |
serviceWorker |
No | No | No | No | No | 11.1 | No | No | No | No | 11.3 | No |
storage |
55 | 79 | 57 | No | 42 | 15.2 | 55 | 55 | 57 | 42 | 15.2 | 6.0 |
usb |
70 | 79 | No | No | 57 | No | 70 | No | 49 | No | 10.0 | |
userAgent |
4 | 12 | 3.5 | 10 | ≤12.1 | 4 | 4.4 | 18 | 4 | ≤12.1 | 5 | 1.0 |
userAgentData |
90 | 90 | No | No | 76 | No | No | 90 | No | No | No | 15.0 |
Worker, WorkerLocation, and WorkerGlobalScope
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https://developer.mozilla.org/en-US/docs/Web/API/WorkerNavigator