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 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
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
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
getAvailability |
56 |
79 |
No |
No |
43 |
No |
No |
56 |
No |
43 |
No |
6.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/Bluetooth/getAvailability