Book Image

JavaScript Design Patterns

By : Hugo Di Francesco
Book Image

JavaScript Design Patterns

By: Hugo Di Francesco

Overview of this book

Unlock the potential of JavaScript design patterns, the foundation for development teams seeking structured and reusable solutions to common software development challenges in this guide to improving code maintainability, scalability, and performance. Discover how these patterns equip businesses with cleaner and more maintainable code, promote team collaboration, reduce errors, and save time and costs. This book provides a comprehensive view of design patterns in modern (ES6+) JavaScript with real-world examples of their deployment in professional settings. You’ll start by learning how to use creational, structural, and behavioral design patterns in idiomatic JavaScript, and then shift focus to the architecture and UI patterns. Here, you’ll learn how to apply patterns for libraries such as React and extend them further to general web frontend and micro frontend approaches. The last section of the book introduces and illustrates sets of performance and security patterns, including messaging and events, asset and JavaScript loading strategies, and asynchronous programming performance patterns. Throughout the book, examples featuring React and Next.js, in addition to JavaScript and Web API examples, will help you choose and implement proven design patterns across diverse web ecosystems, transforming the way you approach development.
Table of Contents (16 chapters)
Part 1:Design Patterns
Part 2:Architecture and UI Patterns
Part 3:Performance and Security Patterns

Implementing Structural Design Patterns

Structural design patterns give us tools to handle connecting different objects; in other words, managing the relationships between objects. This includes techniques to reduce memory usage and develop functionality with existing classes without modifying these existing classes. In addition, JavaScript features allow us to more effectively apply these patterns. Modern JavaScript includes some built-ins that allow us to implement structural design patterns in a more efficient manner.

We’ll cover the following topics in this chapter:

  • Defining structural design patterns as a whole, and proxy, decorator, flyweight, and adapter specifically
  • An implementation of the proxy pattern with a class-based approach as well as an alternative using Proxy and Reflect
  • Multiple implementations of the decorator pattern, leveraging JavaScript first-class support for functions
  • An iterative approach to implementing flyweight in JavaScript...