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
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 device 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
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 | Status | Comment |
---|---|---|
Web Bluetooth The definition of 'getAvailability()' in that specification. |
Draft | Initial definition. |
Browser compatibility
BCD tables only load in the browser