Book Image

Essential Angular

By : Victor Savkin, Jeff Cross
Book Image

Essential Angular

By: Victor Savkin, Jeff Cross

Overview of this book

Essential Angular is a concise, complete overview of the key aspects of Angular, written by two Angular core contributors. The book covers the framework's mental model, its API, and the design principles behind it. This book is fully up to date with the latest release of Angular. Essential Angular gives you a strong foundation in the core Angular technology. It will help you put all the concepts into the right places so you will have a good understanding of why the framework is the way it is. Read this book after you have toyed around with the framework, but before you embark on writing your first serious Angular application. This book covers concepts such as the differences between Just-In-Time (JIT) and Ahead-Of-Time (AOT) compilation in Angular, alongside NgModules, components and directives. It also goes into detail on Dependency Injection and Change Detection: essential skills for Angular developers to master. The book finishes with a look at testing, and how to integrate different testing methodologies in your Angular code.
Table of Contents (11 chapters)


An Angular application is a reactive system. And that's why we need to understand reactive programming to be productive with Angular.

Reactive programming works with event streams and the state. And it can be divided into transparent and reified.

Since the very beginning the framework has had excellent support for transparent reactive programming. It was used both to propagate the state and to handle events. It is simple and fast. And the new versions of the framework still support it.

But it can also be limiting at times and make solving certain problems difficult. That's why Angular now comes with support for reified reactive programming, using observables.

The Angular ecosystem embraced these ideas as well. The reactive forms module, the router, and other libraries like NgRx, all provide observable-based APIs.