help us dave

dontgetit.js

class dontGetIt {
  constructor() {
    this.foo = 'hello';
  }

  hello() {
    this.foo;
  }
}

dgi = new dontGetIt;
dgi.hello();


// why does line 12 return undefined and not 'hello'

how can I set values in the constructor that I can access in any of the included functions in the class? similar to instance variables in a ruby class