Book Image

Learning Angular - Third Edition

By : Aristeidis Bampakos, Pablo Deeleman
Book Image

Learning Angular - Third Edition

By: Aristeidis Bampakos, Pablo Deeleman

Overview of this book

Angular, loved by millions of web developers around the world, continues to be one of the top JavaScript frameworks thanks to its regular updates and new features that enable fast, cross-platform, and secure frontend web development. With Angular, you can achieve high performance using the latest web techniques and extensive integration with web tools and integrated development environments (IDEs). Updated to Angular 10, this third edition of the Learning Angular book covers new features and modern web development practices to address the current frontend web development landscape. If you are new to Angular, this book will give you a comprehensive introduction to help you get you up and running in no time. 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. The book is especially useful for beginners to get to grips with the bare bones of the framework needed to start developing Angular apps. 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 (19 chapters)
1
Section 1: Getting Started with Angular
4
Section 2: Components – the Basic Building Blocks of an Angular App
9
Section 3: User Experience and Testability
15
Section 4: Deployment and Practice

Strategies for handling asynchronous information

Consuming information from an API is a typical operation in our daily development workflow. We consume data over HTTP all the time, such as when authenticating users by sending out credentials to an authentication service. We also use HTTP when fetching the latest tweets in our favorite Twitter widget. Modern mobile devices have introduced a unique way of consuming remote services. They defer requests and response consumption until mobile connectivity is available. Responsivity and availability have become a big deal. Although internet connections are high-speed nowadays, there is always a response time involved when serving such information. Thus, as we will see in the following sections, we put in place mechanisms to handle states in our applications in a transparent way for the end user.

Shifting from callback hell to promises

Sometimes, we might need to build functionalities in our application that change its state asynchronously...