MIDIInput: midimessage event
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
The midimessage
event of the Web MIDI API is fired when the MIDI port corresponding to this MIDIInput
finishes receiving one or more MIDI messages. An instance of MIDIMessageEvent
containing the message that was received is passed to the event handler.
Syntax
Use the event name in methods like addEventListener()
, or set an event handler property.
js
addEventListener("midimessage", (event) => {});
onmidimessage = (event) => {};
Event type
An MIDIMessageEvent
. Inherits from Event
.
Event 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.
Examples
In the following example midimessage
events are listened for on all input ports. When a message is received the MIDIMessageEvent.data
property is printed to the console.
js
inputs.forEach((input) => {
input.onmidimessage = (message) => {
console.log(message.data);
};
});
Specifications
Specification |
---|
Web MIDI API # dom-midiinput-onmidimessage |
Browser compatibility
BCD tables only load in the browser