Question

I am using “constructor chaining” to define a base class (Super).

function Super () {
  this.member1 = 'superMember1';
  this.member2 = 'superMember2';
}

function Sub() {
  Super.call(this, arguments);
  this.member3 = 'subMember3';
  var t = this.hasOwnProperty("member1"); // gives me true, so I cannot use it
}

How can I test whether a member (1,2,3) is defined (belonging) in my Sub class or in the Super class?

Remark: `this[“name”]’ is not the way, because I can only decide whether a value has been assigned – not if it is belonging to Super or Sub.

As Darhazer comments below, constructor chaining copies the members, so it might be tricky.

Answer 1

Obviously as of the answers so far, not possible. Hence will be closed.