What is the correct way to refer to the setter of the parent class in the child in JavaScript?

Question

JavaScript

If I declare a property in the prototype of the parent class, in the following way:

Foo.prototype = {
    get target() {
        return this._target;
    },

    set target(value) {
        this._target = value;
    }
}

How can I call the parent setter in the child class?
The only way I see is through the getOwnPropertyDescriptor call. If so, is this method costly in terms of performance, i.e. getOwnPropertyDescriptor. every time descriptor object and what is it worth?

Answer 1

Yes, the only one. Yes, costly. If you don't like it, cache the parent descriptor.

var P = {
  set a(it){
    console.log('P');
  }
}
var C = {
  __proto__: P,
  set a(it){
    a.set.call(this, it);
    console.log('C');
  }
}
var a = Object.getOwnPropertyDescriptor(P, 'a');
C.a = 42;