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

Manipulating data with pipes

Pipes allow us to filter and funnel the outcome of our expressions on a view level. They take data as input, transform it into the desired format, and display the output in the template. To better understand it, think of it like transforming a donkey into a unicorn:

Figure 4.2 – Conceptualized pipe transformation

Figure 4.2 – Conceptualized pipe transformation

The donkey may look like a unicorn, but it is always a donkey. That is, the transformation is applied only on a view level; the underlying data remains intact in its original form.

The syntax of a pipe is pretty simple, basically consisting of the pipe name following the expression that we want to transform, separated by a pipe symbol (hence the name). 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 in:

  • The uppercase/lowercase pipes transform a string into a particular case. The following snippet...