MIDIMessageEvent
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
The MIDIMessageEvent interface of the Web MIDI API represents the event passed to the midimessage event 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()-
Creates a new
MIDIMessageEventobject instance.
Instance properties
This interface also inherits properties from Event.
MIDIMessageEvent.data-
A
Uint8Arraycontaining the data bytes of a single MIDI message. See the MIDI specification for more information on its form.
Instance methods
This interface doesn't implement any specific methods, but inherits methods from Event.
Examples
The following example prints all MIDI messages to the console.
navigator.requestMIDIAccess().then((midiAccess) => {
Array.from(midiAccess.inputs).forEach((input) => {
input[1].onmidimessage = (msg) => {
console.log(msg);
};
});
});
Specifications
| Specification |
|---|
| Web MIDI API # midimessageevent-interface |
Browser compatibility
| desktop | mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
MIDIMessageEvent
|
|
|
|
|
|
|
|
|
|
|
|
|
MIDIMessageEvent() constructor
|
|
|
|
|
|
|
|
|
|
|
|
|
data
|
|
|
|
|
|
|
|
|
|
|
|
|
Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
- No support
- No support
- See implementation notes.