JavaScript and OO Inheritance

dog.js

// Child class
function Dog() {
    
	// Call parent constructor
	Pet.call(this);

	// Override parents name-property
	this.name = 'Ceasar';
}

// Is child of pet
Dog.prototype = new Pet();

// Uses its own constructor
Dog.prototype.constructor = Dog;

// Override public method: whatPet
Dog.prototype.whatPet = function() {
	return 'Im a flying superdog';
}

pet.js

// Parent class
function Pet() {
    
	// Privileged property
	this.name = 'Nyan';

	// Privileged function
	this.getName = function() {
		return this.name;
	}

	// Privileged function
	this.setName = function(_name) {
		this.name = _name;
	}
}

// Public method
Pet.prototype.whatPet = function() {
	return 'Im just a generic pet!';
}