BluetoothRemoteGATTDescriptor

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

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

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

The BluetoothRemoteGATTDescriptor interface of the Web Bluetooth API provides a GATT Descriptor, which provides further information about a characteristic's value.

Instance properties

BluetoothRemoteGATTDescriptor.characteristic Read only Experimental: Returns the BluetoothRemoteGATTCharacteristic this descriptor belongs to.
BluetoothRemoteGATTDescriptor.uuid Read only Experimental: Returns the UUID of the characteristic descriptor, for example '00002902-0000-1000-8000-00805f9b34fb' for the Client Characteristic Configuration descriptor.
BluetoothRemoteGATTDescriptor.value Read only Experimental: Returns the currently cached descriptor value. This value gets updated when the value of the descriptor is read.

Instance methods

BluetoothRemoteGATTDescriptor.readValue() Experimental: Returns a Promise that resolves to an ArrayBuffer holding a duplicate of the value property if it is available and supported. Otherwise it throws an error.
BluetoothRemoteGATTDescriptor.writeValue() Experimental: Sets the value property to the bytes contained in an ArrayBuffer and returns a Promise.

Specifications

Specification
Web Bluetooth # bluetoothgattdescriptor-interface

Browser compatibility

BCD tables only load in the browser