CODEWITHSUNDEEP
javascriptnode.jsinheritanceprototype
user4002542
user4002542

Reputation:

Inhering properties of constructor function

i'm trying to inherit properties from one constructor function in other constructor function.

I have my Event constructor function:

var Controller  = require('./controller');

var Event = function() {
  this.element = 'element';

  Controller.call(this);
};

var event = new Event();

And my Controller constructor function:

var Controller = function() {
  console.log(this.element) // prints 'element'.

  this.method(); // < error
};

Controller.prototype.method = function() {
  console.log(this.element);
};

module.exports = Controller;

I already can access the Event properties and methods in the Controller, but i can't create my own controller methods.

Can by solved?

Thanks.

Upvotes: 0

Views: 46

Answers (1)

Matt
Matt

Reputation: 75317

You should set the prototype of Event. This will add Controller to Event's prototype chain, resulting in the Controller's methods being available on the Event's instance.

var Controller  = require('./controller');

var Event = function() {
  this.element = 'element';

  Controller.call(this);
};

// See here!
Event.prototype = Object.create(Controller.prototype);

// Note other Event.prototype additions must be *after* the above line.
Event.prototype.another = function () {
    console.log('Another');

    this.method();
};

var event = new Event();

Upvotes: 1

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