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Angular Design Patterns and Best Practices

Angular Design Patterns and Best Practices

By : Alvaro Camillo Neto
4.4 (14)
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Angular Design Patterns and Best Practices

Angular Design Patterns and Best Practices

4.4 (14)
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)
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1
Part 1: Reinforcing the Foundations
7
Part 2: Leveraging Angular’s Capabilities
12
Part 3: Architecture and Deployment

Creating a loader

In a frontend project, performance is not only about having faster requests but also improving the user’s perception of the application. A blank screen without any feedback signals to the user that the page did not load, that their internet is having a problem, or any other type of negative perception.

That’s why we always need to signal that the action the user expects is being performed. One way to show this is a loading indicator, and that’s what we’re going to do in this session. In the command line of our operating system, we will use the Angular CLI:

 ng generate component loading-overlay
 ng generate service loading-overlay/load
 ng generate interceptor loading-overlay/load

With that, we created the overlay component, the service that will control the loading state, and the interceptor that will control the beginning and end of the loading based on HTTP requests.

Let’s create the loading overlay screen in the HTML...

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