BluetoothRemoteGATTCharacteristic: readValue() method
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
  The BluetoothRemoteGATTCharacteristic.readValue() method
  returns a Promise that resolves to a DataView 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
Specifications
| Specification | 
|---|
| Web Bluetooth  # dom-bluetoothremotegattcharacteristic-readvalue  | 
Browser compatibility
BCD tables only load in the browser