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The onstatechange EventHandler of the MIDIPort interface is an EventHandler that processes state change events.

The event fires when a port changes from open to closed, or closed to open.


MIDIPort.onstatechange = function;
MIDIPort.addEventListener('statechange', function);


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

port.onstatechange = function() {


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