Advanced JavaScript Design Patterns
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About this ebook
"JavaScript is the Most popular programming language used by professional developers today"
Immerse yourself in the world ofDesign Patterns in JavaScriptwith this comprehensive guide that explores the practical application of the most relevant patterns.
✅From theModule pattern to the observer pattern, each section of this guide is carefully crafted to help you tackle development challenges with confidence and clarity.
✅Designed for both beginners and experienced developers, this guide will provide you with the necessary tools to effectively understand and apply design patterns, thus elevating the quality and sustainability of your projects in JavaScript.
Buy NOW and Transform your Coding Skills!
Hernando Abella
Hernando Abella is a developer who thoroughly enjoys sharing all the knowledge he has accumulated through his extensive experience. After completing his studies at INCCA University of Colombia, he has dedicated himself to writing programming languages, including Java, C, C++,C#, among others. He has been immersed in the world of programming since the age of 14 and has always harbored a profound passion for coding. his hobbies include cycling and swimming. More About me on : X : Hernando Abella
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Advanced JavaScript Design Patterns - Hernando Abella
Introduction
Immerse yourself in the world of design patterns in JavaScript with this comprehensive guide that explores the practical application of the most relevant patterns. From the module pattern to the observer pattern, each section of this guide is carefully crafted to help you tackle development challenges with confidence and clarity. Designed for both beginners and experienced developers, this guide will provide you with the necessary tools to effectively understand and apply design patterns, thus elevating the quality and sustainability of your projects in JavaScript.
What are Design Patterns?
Design patterns are proven and robust solutions for addressing common problems in software design and other contexts related to interaction and interfaces. These techniques provide structured and effective approaches to solving recurring challenges, promoting efficiency, reusability, and clarity in software development.
A design pattern is considered a mature and consolidated solution for a specific design problem. To earn the recognition of being a pattern, it must exhibit certain key characteristics. Firstly, it must have demonstrated its effectiveness in solving similar problems in previous situations. Additionally, a pattern should be highly reusable, meaning it is applicable in various contexts and design challenges.
Types of Design Patterns
There are three main categories of design patterns, each focusing on a particular dimension of software design:
Creational Patterns: These patterns center around how class instances and objects are created. They offer flexible solutions for object creation in various scenarios.
Structural Patterns: Structural patterns deal with the composition of classes and objects to form larger structures. They facilitate the creation of efficient and flexible relationships between parts of the system.
Behavioral Patterns: These patterns focus on the interaction between objects and how they communicate with each other. They help define workflows and collaborative behaviors.
Creational Design Patterns
Creational design patterns focus on how objects are created, providing solutions for instantiating objects appropriately for the situation. They address design and complexity problems that can arise when creating objects in the most basic form. These patterns solve these problems by controlling the object creation in some way.
Below are the most common creational design patterns in JavaScript:
Factory Method: Provides an interface for creating objects, allowing subclasses to alter the type of objects that will be created. It's useful when flexible and adaptable creation logic is needed.
Abstract Factory: Provides an interface for creating families of related or dependent objects without specifying their concrete classes. This promotes the creation of consistent and compatible objects.
Builder: Is used to construct an object step by step. It allows the creation of complex objects by specifying their type and content incrementally.
Prototype: Focuses on creating new objects by copying an existing object, called a prototype. It's useful when creating an object is more efficient by duplicating an existing object rather than building it from scratch.
Singleton: Ensures that a class has a single instance and provides a global point of access to that instance. It is used when a single instance of a class needs to coordinate actions throughout the system.
Factory Method
The Factory Method design pattern is a software design technique that relies on creating objects of a specific subtype through a common interface. This pattern is achieved by using an abstract creator class that contains both concrete and abstract methods. The concrete methods handle object creation, while the abstract methods are implemented by concrete subclasses. Depending on the subclass used, specific behavior is obtained.
Example: To better understand the Factory Method, let's consider a concrete example related to creating points in a two-dimensional plane. Imagine that we are developing an application that needs to work with points in Cartesian and polar coordinates.
First, we create a class called Point that