Book Image

Learning Angular - Fourth Edition

By : Aristeidis Bampakos, Pablo Deeleman
5 (1)
Book Image

Learning Angular - Fourth Edition

5 (1)
By: Aristeidis Bampakos, Pablo Deeleman

Overview of this book

As Angular continues to reign as one of the top JavaScript frameworks, more developers are seeking out the best way to get started with this extraordinarily flexible and secure framework. Learning Angular, now in its fourth edition, will show you how you can use it to achieve cross-platform high performance with the latest web techniques, extensive integration with modern web standards, and integrated development environments (IDEs). The book is especially useful for those new to Angular and will help you to get to grips with the bare bones of the framework to start developing Angular apps. You'll learn how to develop apps by harnessing the power of the Angular command-line interface (CLI), write unit tests, style your apps by following the Material Design guidelines, and finally, deploy them to a hosting provider. Updated for Angular 15, this new edition covers lots of new features and tutorials that address the current frontend web development challenges. You’ll find a new dedicated chapter on observables and RxJS, more on error handling and debugging in Angular, and new real-life examples. By the end of this book, you’ll not only be able to create Angular applications with TypeScript from scratch, but also enhance your coding skills with best practices.
Table of Contents (17 chapters)
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Introduction to TypeScript

As we learned in the previous chapter, where we built our very first Angular application, the code of an Angular project is written in TypeScript. Writing in TypeScript and leveraging its static typing gives us a remarkable advantage over other scripting languages. This chapter is not a thorough overview of the TypeScript language. Instead, we’ll focus on the core elements and study them in detail on our journey through Angular. The good news is that TypeScript is not all that complex, and we will manage to cover most of its relevant parts.

In this chapter, we’re going to cover the following main topics:

  • The history of TypeScript
  • Types
  • Functions, lambdas, and execution flow
  • Common TypeScript features
  • Decorators
  • Advanced types
  • Modules

We will first investigate the background of TypeScript and the rationale behind its creation. We will also learn what tools and online resources are available to practice with TypeScript. We will emphasize the typing system, which is the main advantage of TypeScript, and learn how we can use it to create some basic types. We will expand our typing knowledge by learning how to use classes, interfaces, and advanced types in the Angular context. At the end of the chapter, we will explore how to organize the structure of an application by combining the typing system with modules.