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BluetoothRemoteGATTDescriptor

 

Non-standard
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

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

In earlier versions of the spec, this was called BluetoothGATTDescriptor.

Interface

interface BluetoothRemoteGATTDescriptor {
  readonly attribute BluetoothGATTCharacteristic characteristic;
  readonly attribute UUID uuid;
  readonly attribute ArrayBuffer? value;
  Promise<ArrayBuffer> readValue();
  Promise<void> writeValue(BufferSource value);
};

Properties

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

Methods

BluetoothRemoteGATTDescriptor.readValue()
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()
Sets the value property to the bytes contained in an ArrayBuffer and returns a Promise.

Specifications

Specification Status Comment
Web Bluetooth
The definition of 'BluetoothRemoteGATTDescriptor' in that specification.
Draft Initial definition.

Browser Compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 57 ? ? 44 ?
Feature Android Webview Chrome for Android Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile
Basic support No support 57 ? ? ? 44 ?

Document Tags and Contributors

 Contributors to this page: jpmedley, chrisdavidmills
 Last updated by: jpmedley,