Design Pattern Categorization

Learning JavaScript Design Patterns

 

 

Let us now proceed to review the table.

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Creational	Based on the concept of creating an object.
Class
Factory Method	This makes an instance of several derived classes based on interfaced data or events.
Object
Abstract Factory	Creates an instance of several families of classes without detailing concrete classes.
Builder	Separates object construction from its representation, always creates the same type of object.
Prototype	A fully initialized instance used for copying or cloning.
Singleton	A class with only a single instance with global access points.
Structural	Based on the idea of building blocks of objects
Class
Adapter	Match interfaces of different classes therefore classes can work together despite incompatible interfaces
Object
Adapter	Match interfaces of different classes therefore classes can work together despite incompatible interfaces
Bridge	Separates an object's interface from its implementation so the two can vary independently
Composite	A structure of simple and composite objects which makes the total object more than just the sum of its parts.
Decorator	Dynamically add alternate processing to objects.
Facade	A single class that hides the complexity of an entire subsystem.
Flyweight	A fine-grained instance used for efficient sharing of information that is contained elsewhere.
Proxy	A place holder object representing the true object
Behavioral	Based on the way objects play and work together.
Class
Interpreter	A way to include language elements in an application to match the grammar of the intended language.
Template         Method	Creates the shell of an algorithm in a method, then defer the exact steps to a subclass.
Object
Chain of        Responsibility	A way of passing a request between a chain of objects to find the object that can handle the request.
Command	Encapsulate a command request as an object to enable, logging and/or queuing of requests, and provides error-handling for unhandled requests.
Iterator	Sequentially access the elements of a collection without knowing the inner workings of the collection.
Mediator	Defines simplified communication between classes to prevent a group of classes from referring explicitly to each other.
Memento	Capture an object's internal state to be able to restore it later.
Observer	A way of notifying change to a number of classes to ensure consistency between the classes.
State	Alter an object's behavior when its state changes
Strategy	Encapsulates an algorithm inside a class separating the selection from the implementation
Visitor	Adds a new operation to a class without changing the class