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The onconnect event handler of the SerialPort interface is called when the port has disconnected from the device. This method receives an Event object. This event is only fired for ports associated with removable devices such as those connected via USB. This event bubbles to the instance of Serial that returned this interface..


SerialPort.onconnect = function(event);
SerialPort.addEventListener('connect', function(event));


Web Serial API
# dom-serialport-onconnect

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