Help Understanding Class functions

JavaScript
1

Am learning Javascript and trying to run some code to increase my understanding of using classes. Please find my code and comment on the last line for the assistance I need.

class MyApp {
  constructor(name) {
    this.name = name
  }

  getName() { return `${this.name}` }
}

const me = new MyApp("Prosper");

console.log(me.getName); // function getName() {...}

const func = (callback) => console.log(me.callback());

func(me.getName); // Why not printing "Prosper" here?
3

But I expected since callback is a parameter and I passed me.getName as an argument which is a function that exists in the me object’s prototype when I called func, it would resolve to

const func = (getName) => console.log(me.getName())

Where is my logic wrong?

5

OHH!, so the callback in the parameter and the callback in me.callback are not referencing the same thing?

6

Not at all. There is no such thing as me.callback. You would have to define it in the class for it to exist in the me instance.

1 Like
8

Hahaha, I feel so dumb and so wise at the same time now. Thank you for taking the time to explain it to me. I truly appreciate it