MIDIPort: statechange event
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
The statechange event of the MIDIPort interface is fired when a port changes from open to closed, or closed to open.
Syntax
Use the event name in methods like addEventListener(), or set an event handler property.
addEventListener("statechange", (event) => {});
onstatechange = (event) => {};
Event type
A MIDIConnectionEvent. Inherits from Event.
Event properties
MIDIConnectionEvent.portRead only-
Returns a reference to a
MIDIPortinstance for a port that has been connected or disconnected.
Example
In the following example the current MIDIPort.state is logged each time it changes.
port.onstatechange = (event) => {
console.log(port.state);
};
Specifications
| Specification |
|---|
| Web MIDI API # dom-midiport-onstatechange |
Browser compatibility
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