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

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
BluetoothRemoteGATTDescriptor
Experimental
characteristic
Experimental
readValue
Experimental
uuid
Experimental
value
Experimental
writeValue
Experimental

Legend

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Full support
Full support
Partial support
Partial support
No support
No support
Experimental. Expect behavior to change in the future.
See implementation notes.
Has more compatibility info.