Book Image

Angular Cookbook

By : Muhammad Ahsan Ayaz
Book Image

Angular Cookbook

By: Muhammad Ahsan Ayaz

Overview of this book

The Angular framework, powered by Google, is the framework of choice for many web development projects built across varying scales. It’s known to provide much-needed stability and a rich tooling ecosystem for building production-ready web and mobile apps. This recipe-based guide enables you to learn Angular concepts in depth using a step-by-step approach. You’ll explore a wide range of recipes across key tasks in web development that will help you build high-performance apps. The book starts by taking you through core Angular concepts such as Angular components, directives, and services to get you ready for building frontend web apps. You’ll develop web components with Angular and go on to cover advanced concepts such as dynamic components loading and state management with NgRx for achieving real-time performance. Later chapters will focus on recipes for effectively testing your Angular apps to make them fail-safe, before progressing to techniques for optimizing your app’s performance. Finally, you’ll create Progressive Web Apps (PWA) with Angular to provide an intuitive experience for users. By the end of this Angular book, you’ll be able to create full-fledged, professional-looking Angular apps and have the skills you need for frontend development, which are crucial for an enterprise Angular developer.
Table of Contents (15 chapters)

Precaching requests using an Angular service worker

With the addition of service workers in our previous recipes, we've seen that they already cache the assets and serve them using the service worker if we go into Offline mode. But what about network requests? If the user goes offline and refreshes the application right now, the network requests fail because they're not cached with the service worker. This results in a broken offline user experience. In this recipe, we'll configure the service worker to precache network requests so the app works fluently in Offline mode as well.

Getting ready

The project that we are going to work with resides in chapter13/start_here/precaching-requests inside the cloned repository:

  1. Open the project in Visual Studio Code.
  2. Once done, run ng build --configuration production.
  3. Now run http-server dist/precaching-requests -p 8300 to serve it.
  4. Navigate to http://localhost:8300. Refresh the app once. Then switch to...