Function in Javascript

In Javascript, functions double as constructors. You call a function as a constructor by using the new operator.

Javascript Prototype

Advantage of using the prototype object to add functions

• No matter how many objects you create, functions are loaded only once into memory
• Allows you to override function if required

Encapsulation

• Concept: enclosing all the functionalities of an object within that object.
• Then we can instantiate an instance of User using User constructor.

Inheritance

In JavaScript, we don't have the concept of class, so inheritance in JavaScript is prototype based. This means to implement inheritance in JavaScript, an object inherits from another object.

Polymorphism

The ability to redefine methods for derived classes.

Homework

https://learn.javascript.ru/oop ООП в функциональном стиле

https://learn.javascript.ru/prototypes ООП в прототипном стиле

http://habrahabr.ru/post/144646 Понимание ООП в JavaScript

http://habrahabr.ru/post/144646 Javascript: ООП, прототипы, замыкания, «класс» Timer.js

http://tobyho.com/2010/11/22/javascript-constructors-and Javascript Constructors and Prototypes

https://raw.githubusercontent.com/coodict/javascript-in-one-pic/master/js%20in%20one%20pic.png All JavaScript ( taken from GitHub)

http://www.internet-technologies.ru/articles/article_2723.html Модель-Представление-Контроллер (MVC) с помощью JavaScript

Task

Can be found in the OneDrive folder