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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Manipulating data with pipes

Pipes allow us to transform the outcome of our expressions at the view level. They take data as input, transform it into the desired format, and display the output in the template.

The syntax of a pipe is pretty simple, consisting of the pipe name following the expression we want to transform, separated by a pipe symbol (|). Pipes are usually used with interpolation in Angular templates and can be chained to each other. Angular has a wide range of pipe types already baked into it.

Before moving on to explore some of the built-in Angular pipes, we will make a change to our Angular working application to demonstrate their use better. The products array in the product list component is currently an array of string values. We will convert it into an array of product objects using interfaces:

  1. Run the following Angular CLI command inside the src\app\products folder to create a product interface:
    ng generate interface product...