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Learning Angular

Learning Angular

By : Aristeidis Bampakos
4 (6)
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Learning Angular

Learning Angular

4 (6)
By: Aristeidis Bampakos

Overview of this book

Angular is an extremely fast, cross-platform JavaScript framework loved by millions. Learning Angular is a comprehensive introduction to the framework from an experienced Angular developer and Google Developer Expert. You’ll learn the Angular way of development as you build a real-world app from the ground up. Updated for Angular 19, this fifth edition tackles landmark changes in Angular after the “Angular Renaissance”. It covers app creation with standalone components, Angular Signals, and the new control flow syntax, while acknowledging differences in approach in older Angular code. You’ll also find a brand-new chapter on optimizing performance with SSR and hydration, as well as revamped content on TypeScript. Angular developers of all experience levels will benefit from this book. It is especially useful if you are new to Angular, as it will help you get to grips with the bare bones of the framework. By the end of this book, you'll be able to create Angular applications with TypeScript from scratch and apply best practices in any Angular codebase.
Table of Contents (15 chapters)
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Learning Angular, Fifth Edition: A practical guide to building web applications with modern Angular

Creating our first Angular service

To create a new Angular service, we use the ng generate command of the Angular CLI while passing the name of the service as a parameter:

ng generate service products

Running the preceding command will create the products service that consists of the products.service.ts file and its accompanying unit test file, products.service.spec.ts.

We usually name a service after the functionality that it represents. Every service has a business context or domain that operates. When it starts to cross boundaries between different contexts, this is an indication that you should break it into different services. A products service should be concerned with products. Similarly, orders should be managed by a separate orders service.

An Angular service is a TypeScript class marked with the @Injectable decorator. The decorator identifies the class as an Angular service that can be injected into other Angular artifacts such as components, directives, or even other services...

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