Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The BluetoothRemoteGATTDescriptor interface of the Web Bluetooth API provides a GATT Descriptor, which provides further information about a characteristic's value.
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 theClient 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.
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.
| Specification |
|---|
| Web Bluetooth # bluetoothgattdescriptor-interface |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
BluetoothRemoteGATTDescriptor |
57Before Chrome 70, this feature was only supported in macOS. In Chrome 70, support was added for Windows 10. Linux support is not enabled by default.57In Linux and versions of Windows earlier than 10, this flag must be enabled. |
79Supported by default only on macOS and Windows 10. Linux support is not enabled by default.79In Linux and versions of Windows earlier than 10, this flag must be enabled. |
No | No |
44Before Opera 57, this feature was only supported in macOS. In Opera 57, support was added for Windows 10. Linux support is not enabled by default.44In Linux and versions of Windows earlier than 10, this flag must be enabled. |
No | No | 57 | No | 44 | No | 7.0 |
characteristic |
57 | 79 | No | No | 44 | No | No | 57 | No | 44 | No | 7.0 |
readValue |
57 | 79 | No | No | 44 | No | No | 57 | No | 44 | No | 7.0 |
uuid |
57 | 79 | No | No | 44 | No | No | 57 | No | 44 | No | 7.0 |
value |
57 | 79 | No | No | 44 | No | No | 57 | No | 44 | No | 7.0 |
writeValue |
57 | 79 | No | No | 44 | No | No | 57 | No | 44 | No | 7.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/BluetoothRemoteGATTDescriptor