Book Image

Angular Design Patterns and Best Practices

By : Alvaro Camillo Neto
2 (1)
Book Image

Angular Design Patterns and Best Practices

2 (1)
By: Alvaro Camillo Neto

Overview of this book

Single page applications (SPAs) have become the standard for most web experiences. Angular, with its batteries-included approach, has emerged as a powerful framework for simplifying the development of these interfaces by offering a comprehensive toolbox. This book guides you through the Angular ecosystem, uncovering invaluable design patterns and harnessing its essential features. The book begins by laying a strong foundation, helping you understand when and why Angular should be your web development framework of choice. The next set of chapters will help you gain expertise in component design and architecting efficient, flexible, and high-performing communication patterns between components. You’ll then delve into Angular's advanced features to create forms in a productive and secure way with robust data model typing. You'll also learn how to enhance productivity using interceptors to reuse code for common functionalities, such as token management, across various apps. The book also covers micro frontend architecture in depth to effectively apply this architectural approach and concludes by helping you master the art of crafting tests and handling errors effortlessly. By the end of this book, you'll have unlocked the full potential of the Angular framework.
Table of Contents (19 chapters)
1
Part 1: Reinforcing the Foundations
7
Part 2: Leveraging Angular’s Capabilities
12
Part 3: Architecture and Deployment

Simplifying application states – Angular Signals

Controlling the state of a frontend application is one of the biggest challenges for a developer, as by nature, the interface is dynamic and needs to react to various user actions. Angular, with its stacks included philosophy, already had tools suitable for this task, and we studied in Chapters 5, Angular Services and the Singleton Pattern, and Chapter 9, Exploring Reactivity with RxJS, how to use these tools. However, despite being effective, the Angular community and team recognize that they are a bit complex for new developers and for simple cases of reactivity in frontend projects. To fill this gap, the Angular team introduced, from version 17 onward, a new element to the framework, called Signals.

According to the Angular documentation, a signal is a wrapper around a value that notifies consumers when that value changes. An analogy that you can associate with a signal is a cell in a spreadsheet. It can contain a value...