MIDIOutput

{{securecontext_header}}{{APIRef("Web MIDI API")}}

The MIDIOutput interface of the {{domxref('Web MIDI API','','',' ')}} provides methods to add messages to the queue of an output device, and to clear the queue of messages.

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Instance properties

This interface doesn't implement any specific properties, but inherits properties from {{domxref("MIDIPort")}}.

Instance methods

This interface also inherits methods from {{domxref("MIDIPort")}}.

• {{domxref("MIDIOutput.send()")}}
  • : Queues a message to be sent to the MIDI port.
• {{domxref("MIDIOutput.clear()")}}
  • : Clears any pending send data from the queue.

Examples

The following example sends a middle C immediately on MIDI channel 1.

function sendMiddleC(midiAccess, portID) {
  const noteOnMessage = [0x90, 60, 0x7f]; // note on, middle C, full velocity
  const output = midiAccess.outputs.get(portID);
  output.send(noteOnMessage); // sends the message.
}

Specifications

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Browser compatibility

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