Is it ok to return an object in Javascript class?

Question

What happens if return an object when defining a class constructor? can I use it for security and avoid accessing the class methods and ...?

for example I have below code:

class X {
  y = ''
  x = 0

  constructor(
    p1,
    p2,

  ) {
    this.p1 = p1
    this.p2 = p2
    return {
      getp1: this.getp1
    }
  }
 getp1 = () => this.p1
}

let x = new X("fo", "bar")
console.log(x.p1) // will be undefined
console.log(x.getp1() ) // will be "fo"

as you see x.p1 is not accessible directly, but I can get p1 by getp1 method. can I use it for private and public methods in javascript?

What's the point of creating an object if you can't access its attributes or methods? — Barmar
– Barmar, Commented Oct 18, 2021 at 21:18
why do you want this? if the class does not returnitself, you get the custom object. — Nina Scholz
– Nina Scholz, Commented Oct 18, 2021 at 21:18
I neither understand what you mean by "for security" nor by "avoid accessing the class methods" — Bergi
– Bergi, Commented Oct 18, 2021 at 21:21
But you've effectively made everything private, since you never get the object. — Barmar
– Barmar, Commented Oct 18, 2021 at 21:22
@MHS ... "Assume everything operates automatically and does not need any public method" ... in that case a function, or, in order to meet the aspect of some lifetime, a closure are already sufficient enough. — Peter Seliger
– Peter Seliger, Commented Oct 18, 2021 at 21:32

AnanthDev · Accepted Answer · 2021-10-18 21:19:28Z

5

This would be a better approach.

You can use # to make a property or a method "private" which means it can only be accessed by methods or properties inside of that class. the code below demonstrates its usage

class Test {
    #privateValue;
    constructor() {
        this.#privateValue = 10;
    }

    test() {
        return this.#privateValue;
    }
}

const test = new Test();
console.log(test.privateValue)
console.log(test.test())

answered Oct 18, 2021 at 21:19

AnanthDev

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