MIDIMessageEvent

The MIDIMessageEvent interface of the Web MIDI API represents the event passed to the onmidimessage event handler of the MIDIInput interface. A midimessage event is fired every time a MIDI message is sent from a device represented by a MIDIInput, for example when a MIDI keyboard key is pressed, a knob is tweaked, or a slider is moved.

Constructor

MIDIMessageEvent.MIDIMessageEvent

Creates a new MIDIMessageEvent object instance.

Properties

MIDIConnectionEvent.data

A Uint8Array containing the data bytes of a single MIDI message. See the MIDI specification for more information on its form.

Examples

// Printing all messages to console
navigator.requestMIDIAccess().then(midiAccess => {
  Array.from(midiAccess.inputs).forEach(input => {
    input[1].onmidimessage = console.log;
  })
});

Specifications

Browser compatibility