The MIDIInput interface of the Web MIDI API receives messages from a MIDI input port.

This interface doesn't implement any specific properties, but inherits properties from MIDIPort.

This interface doesn't implement any specific methods, but inherits methods from MIDIPort.

midimessage

Fired when the current port receives a MIDI message.

In the following example the name of each MIDIInput is printed to the console. Then, midimessage events are listened for on all input ports. When a message is received the MIDIMessageEvent.data property is printed to the console.

inputs.forEach((input) => {
  console.log(input.name); /* inherited property from MIDIPort */
  input.onmidimessage = (message) => {
    console.log(message.data);
  };
});