How to access class variables in the constructor? (node.js OOP)

Question

Is there some way to access a class variable in the constructor?

var Parent = function() {
  console.log(Parent.name);
};
Parent.name = 'parent';

var Child = function() {
  Parent.apply(this, arguments);
}
require('util').inherits(Child, Parent);
Child.name = 'child';

i.e Parent's constructor should log "parent" and child's Constructor should log "child" based one some class variable in each class.

The above code doesn't work as I expect.

generalhenry · Accepted Answer · 2011-12-17 05:55:07Z

1

Here it is in vanilla js:

var Parent = function() {
  console.log(this.name);
};
Parent.prototype.name = 'parent';

var Child = function() {
  Parent.apply(this, arguments);
}

Child.prototype = new Parent();
Child.prototype.constructor = Child;
Child.prototype.name = 'child';

var parent = new Parent();
var child = new Child();

utils.inherits just simplifies the

Child.prototype = new Parent();
Child.prototype.constructor = Child;

into

util.inherits(Child, Parent);

edited Dec 17, 2011 at 5:55

answered Dec 17, 2011 at 5:49

generalhenry

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1 Comment

Tobias Cudnik Over a year ago

utils.inherits does more than described (no instance of a subclass).

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