MIDIPort: statechange event
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
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.
js
addEventListener("statechange", (event) => {});
onstatechange = (event) => {};
Event type
A MIDIConnectionEvent
. Inherits from Event
.
Event properties
MIDIConnectionEvent.port
Read only-
Returns a reference to a
MIDIPort
instance for a port that has been connected or disconnected.
Example
In the following example the current MIDIPort.state
is logged each time it changes.
js
port.onstatechange = (event) => {
console.log(port.state);
};
Specifications
Specification |
---|
Web MIDI API # dom-midiport-onstatechange |
Browser compatibility
BCD tables only load in the browser