You can check the console debug logs for added details.
You can download a virtual MIDI I/O controller for windwos here:
http://www.tobias-erichsen.de/software/loopmidi.html
This code uses the WebMIDI.js library, referenced here:
https://github.com/djipco/webmidi
Below you can test the
MIDI hotkey commands for VDO.Ninja below: