BluetoothRemoteGATTDescriptor: readValue() method
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
  The
  BluetoothRemoteGATTDescriptor.readValue()
  method 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.
Syntax
js
readValue()
Parameters
None.
Return value
A Promise that resolves to an ArrayBuffer.
Specifications
| Specification | 
|---|
| Web Bluetooth  # dom-bluetoothremotegattdescriptor-readvalue  | 
Browser compatibility
BCD tables only load in the browser