Gang of Four (GoF). Design Patterns in JavaScript

This repository contains JavaScript implementation for all design patterns described in the Design Patterns: Elements of Reusable Object-Oriented Software book written by "Gang of Four".

Design Patterns described by GoF and implemented in this repository

Erich Gamma, Richard Helm, Ralph Johnson, and John Vlissides (1994). Design Patterns: Elements of Reusable Object-Oriented Software.1.8 How to Use a Design Pattern (pp. 28-29, Table 1.2)

Purpose	Design Pattern	Aspect(s) That Can Vary
Creational	Abstract Factory	families of product objects
	Builder	how a composite object gets created
	Prototype	class of object that is instantiated
	Singleton	the sole instance of a class
	Factory Method	create objects in parent class
Structural	Adapter	interface to an object
	Bridge	implementation of an object
	Composite	structure and composition of an object
	Decorator	responsibilities of an object without subclassing
	Facade	interface to a subsystem
	Flyweight	storage costs of objects
	Proxy	how an object is accessed; its location
Behavioral	Chain of Responsibility	object that can fulfill a request
	Command	when and how a request is fulfilled
	Interpreter	grammar and interpretation of a language
	Iterator	how an aggregate's elements are accessed, traversed
	Mediator	how and which objectsinteract with each other
	Memento	what private information isstored outside an object, and when
	Observer	number of objects that depend on another object; how the dependent objects stay up to date
	State	states of an object
	Strategy	an algorithm
	Template Method	steps of an algorithm
	Visitor	operations that can be applied to object(s) without changing their class(es)

How to run the code

You can run each design pattern implementation by executing the following command in the terminal:

node /<design-pattern-type>/<design-pattern-name>/index.js

License

EDSprog/design-patterns-javascript

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