good example for how to use portsChanged

[cristianvogel]

Hi!

Would it be too much to ask for a code example of how to listen to portsChanged?

https://webmidijs.org/api/classes/WebMidi#event-portschanged

I can't really figure out how to set up a listener for this event, because it is not coming from a midi port? I specifically want to know if the output ports have changed.

[djipco]

Hello Christian,

When listening to an event, you have to add the listener on the object that dispatches the event. In this case, the event is being dispatched by the WebMidi object, so this is how you would do it:

WebMidi.addListener("portschanged", e => {
   console.log(e)
});

Hope this helps!