close() method of the
MIDIPort interface makes the access to the MIDI device connected to this
If the port is successfully closed a new
MIDICOnnectionEvent is queued to the
MIDIAccess.onstatechange event handlers, and the
MIDIPort.connection property is changed to
Promise which resolves once the port has been closed.
The following example shows an output port being closed.
let output = midiAccess.outputs.get(portID); output.close(); // closes the port
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