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
MIDIMessageEvent
object instance.
Instance properties
This interface also inherits properties from Event
.
MIDIMessageEvent.data
-
A
Uint8Array
containing 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
Report problems with this compatibility data on GitHubdesktop | mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
MIDIMessageEvent | ||||||||||||
MIDIMessageEvent() constructor | ||||||||||||
data |
Legend
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- Full support
- Full support
- No support
- No support
- See implementation notes.