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)

Running async events outside Angular with runOutsideAngular

Angular runs its change-detection mechanism on a couple of things, including—but not limited to—all browser events such as keyup, keydown, and so on. It also runs change detection on setTimeout, setInterval, and Ajax HTTP calls. If we had to avoid running change detection on any of these events, we'd have to tell Angular not to trigger change detection on them—for example, if you were using the setTimeout() method in your Angular component, it would trigger an Angular change detection each time its callback method was called. In this recipe, you'll learn how to execute code blocks outside of the ngZone service, using the runOutsideAngular() method.

Getting ready

The project for this recipe resides in Chapter12/start_here/run-outside-angula:

  1. Open the project in VS Code.
  2. Open the terminal and run npm install to install the dependencies of the project.
  3. Run the ng serve...