Prototypal inheritance /w and /wo ECMAScript 5

prototypal_inheritance.js

function object(o) { // Simple prototypal inheritance
    function Proxy() {}
    Proxy.prototype = o;
    return new Proxy();
}

function Person() {
    this.name = "Vladimir"
}
Person.prototype.getName = function () {
    return this.name;
};

// Create a new person
var parent = new Person();
var child = object(parent); // Inherit from parent

child.getName(); // "Vladimir"
// In this example, child inherit both the prototype functionality and properties
// ------------------------------------------------------------------------------
function Person() {
    this.name = "Sljubura"
}
Person.prototype.getName = function () {
    return this.name;
};

var child = object(Person.prototype); // There is no need to instantiate Person() object
typeof child.getName; // "function" - inherits from prototype
typeof child.name; // "undefined" - only prototype is inherited
// ------------------------------------------------------------------------------
// ECMAScript 5
var child = Object.create(parent); // or
var child = Object.create(parent, {
    age: { value: 2 }
});
child.hasOwnProperty("age");