Web/API/Bluetooth/getAvailability

Secure contextThis feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

This is an experimental technologyCheck the Browser compatibility table carefully before using this in production.

The getAvailability() method of Bluetooth interface of Web Bluetooth API interface exposes the Bluetooth capabilities of the current device. For a returns a Boolean which is true if the deveice has a Bluetooth adapter and false otherwise (unless user configured User Agent not to expose a real value).

Note: User might not allow use of Web Bluetooth API, even if getAvailability() returned true (navigator.bluetooth.requestDevice() might not resolve with a BluetoothDevice). Also, user can configure User Agent to return a fixed value instead of a real one.

Syntax

var readerPromise = Bluetooth.getAvailability();

Parameters

None.

Return value

A Promise that resolves with Boolean.

Exceptions

This method doesn't throw any exceptions.

Examples

The following snippet prints out a message in the console specifying wheter or not Bluetooth is supported:

navigator.bluetooth.getAvailability().then(available => {
  if (available)
      console.log("This device supports Bluetooth!");
  else
      console.log("Doh! Bluetooth is not supported");
});

Specifications

Specification	Status	Comment
Web BluetoothThe definition of 'getAvailability()' in that specification.	Draft	Initial definition.

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`getAvailability` Experimental'	Chrome Full support 56 Notes' Full support 56 Notes' Notes' macOS only. Full support 56 Notes' Disabled' Notes' Linux and versions of Windows earlier than 10. Disabled' From version 56: this feature is behind the `#enable-experimental-web-platform-features` preference (needs to be set to `enabled`). To change preferences in Chrome, visit chrome://flags. Full support 70 Notes' Notes' Windows 10.	Edge Full support ≤79 Notes' Full support ≤79 Notes' Notes' macOS only. Full support ≤79 Notes' Disabled' Notes' Linux and versions of Windows earlier than 10. Disabled' From version ≤79: this feature is behind the `#enable-experimental-web-platform-features` preference (needs to be set to `enabled`). Full support ≤79 Notes' Notes' Windows 10.	Firefox No support No	IE No support No	Opera Full support 43 Notes' Full support 43 Notes' Notes' macOS only. Full support 43 Notes' Disabled' Notes' Linux and versions of Windows earlier than 10. Disabled' From version 43: this feature is behind the `#enable-experimental-web-platform-features` preference (needs to be set to `enabled`). Full support 57 Notes' Notes' Windows 10.	Safari No support No	WebView Android No support No	Chrome Android Full support 56	Firefox Android No support No	Opera Android Full support 43	Safari iOS No support No	Samsung Internet Android Full support 6.0

Legend

Full support: Full support
No support: No support
Experimental. Expect behavior to change in the future.': Experimental. Expect behavior to change in the future.
See implementation notes.': See implementation notes.
User must explicitly enable this feature.': User must explicitly enable this feature.

Bluetooth.getAvailability() by Mozilla Contributors is licensed under CC-BY-SA 2.5.