Question about "Passing arguments and this to listeners" section

[iggeehu]

Affected URL(s)

https://nodejs.org/api/events.html#class-eventemitter

Description of the problem

Hi guys, why does "this" in the listener function log as the class MyEmitter, rather than the instance myEmitter, of the class?
The text said that the "this" keyword is set to the EventEmitter instance to which the listener is attached, but isn't the listener attached to myEmitter instead?

This is the text on the doc
"
The eventEmitter.emit() method allows an arbitrary set of arguments to be passed to the listener functions. Keep in mind that when an ordinary listener function is called, the standard this keyword is intentionally set to reference the EventEmitter instance to which the listener is attached.

const myEmitter = new MyEmitter();
myEmitter.on('event', function(a, b) {
  console.log(a, b, this, this === myEmitter);
  // Prints:
  //   a b MyEmitter {
  //     _events: [Object: null prototype] { event: [Function (anonymous)] },
  //     _eventsCount: 1,
  //     _maxListeners: undefined,
  //     [Symbol(kCapture)]: false
  //   } true
});
myEmitter.emit('event', 'a', 'b');

Thanks!

[mscdex]

console.log() shows the class name where available to let you know the type of object you're logging. In this case, myEmitter is an instance of MyEmitter, so it shows that class name. The properties shown in the output are those that belong to that specific instance (this) and not the class/constructor.