JS Inheritance

example.js

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

function Author(name, books) {
    Author.superClass.constructor.call(this, name);
    this.books = books;
}
extend(Author, Person);
Author.prototype.getBooks = function() {
    return this.books;
};
Author.prototype.getName = function() {
    var name = Author.superclass.getName.call(this);
    return name + ", Author of " + this.getBooks().join(', ');
};


// example
var MichaelCrichton = new Author('Michael Crichton', ['Jurassic Park', 'The Andromeda Strain', 'Congo']);
console.log( MichaelCrichton.getName() ); // Michael Crichton, Author of Jurassic Park, The Andromeda Strain, Congo

extend.js

function extend(subClass, superClass) {
    var F = function() {};
    F.prototype = superClass.prototype;
    subClass.prototype = new F();
    subClass.prototype.constructor = subClass;

    subClass.superClass = superClass.prototype;
    if (superClass.prototype.constructor == Object.prototype.constructor)
        superClass.prototype.constructor = superClass;
}