Bluetooth.getAvailability()

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

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The getAvailability() method of the Bluetooth interface returns true if the device has a Bluetooth adapter, and false otherwise (unless the user has configured the browser to not expose a real value).

Note: A user might not allow use of Web Bluetooth API, even if getAvailability() returns true (navigator.bluetooth.requestDevice() might not resolve with a BluetoothDevice). Also, a user can configure their browser 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 whether 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
Web Bluetooth
# dom-bluetooth-getavailability

Browser compatibility

BCD tables only load in the browser