The original 23 Design Patterns were published in 1995 by the Gang of Four (GoF).
Many of these are highly relevant to JavaScript, whereas others are less so.
This section reviews each of the Classic Patterns and for each one its 'frequency-of-use' is indicated.
Gang-of-Four | |
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Introduction | Introduction to the JavaScript Classic Patterns |
Creational Patterns | |
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Abstract Factory | Creates an instance of several object families |
Builder | Separates object construction from its representation |
Factory Method | Creates an instance of several related objects |
Prototype | A fully initialized instance to be copied or cloned |
Singleton | An object of which only a single instance can exist |
Structural Patterns | |
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Adapter | Match interfaces of different objects |
Bridge | Separates an object’s interface from its implementation |
Composite | A tree structure of simple and composite objects |
Decorator | Add responsibilities to objects dynamically |
Façade | A single object that represents an entire subsystem |
Flyweight | A fine-grained instance used for efficient sharing |
Proxy | An object representing another object |
Behavioral Patterns | |
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Chain of Resp. | A way of passing a request between a chain of objects |
Command | Encapsulate a command request as an object |
Interpreter | A way to include language elements in a program |
Iterator | Sequentially access the elements of a collection |
Mediator | Defines simplified communication between objects |
Memento | Capture and restore an object's internal state |
Observer | A way of notifying change to a number of objects |
State | Alter an object's behavior when its state changes |
Strategy | Encapsulates an algorithm inside an object |
Template Method | Defer the exact steps of an algorithm to another object |
Visitor | Defines a new operation to an object without change |