BluetoothRemoteGATTDescriptor.readValue()
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
BluetoothRemoteGATTDescriptor.readValue().then(function(value[]) { /* ... */ })
Returns
A Promise that resolves to an ArrayBuffer.
Specifications
| Specification | 
|---|
| Web Bluetooth  # dom-bluetoothremotegattdescriptor-readvalue  | 
Browser compatibility
BCD tables only load in the browser