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

Communicating with other components

In a nutshell, Angular components expose a public API that allows them to communicate with other components. This API encompasses input properties, which we use to feed the component with data. It also exposes output properties we can bind event listeners to, thereby getting timely information about changes in the state of the component.

Let's take a look at how Angular solves the problem of injecting data into and removing data from components through quick and easy examples in the following sections.

Passing data using input binding

In the Creating our first component section, we learned how to create a new component in an Angular project. The Angular CLI created a template with static HTML content for our new component by default:

<p>hero works!</p>

To see the new component in action, do the following:

  1. Navigate to the app folder that exists inside the src folder.
  2. Open the template of the main component...