Now that we've already covered the basics of AngularJS and data binding, let's take a deep dive into Angular and see what dependency injection is, why it is needed, and how to do dependency injection in Angular. We'll also see the role of filters and how to write custom filters. Then, we'll see how to call remote APIs using the $http service and the $resource service. Finally, we'll study how the $resource service is an abstraction on top of the $http service and how it makes communication with RESTful APIs easier. So, let's get started.

In this chapter, we will cover the following topics: