MIDIPort: statechange event

The statechange event of the MIDIPort interface is fired when a port changes from open to closed, or closed to open.

Use the event name in methods like addEventListener(), or set an event handler property.

addEventListener('statechange', event => { });

onstatechange = event => { };

A MIDIConnectionEvent. Inherits from Event.

MIDIConnectionEvent.portRead only

Returns a reference to a MIDIPort instance for a port that has been connected or disconnected.

In the following example the current MIDIPort.state is logged each time it changes.

port.onstatechange = event => {
  console.log(port.state);
}