Summary
In this chapter, we saw what separation of concerns is and how AngularJS is designed to solve this problem. We quickly went through some of the key AngularJS components that we would use while working with Ionic. You also saw how to create custom directives and custom services, and learned about their usage. The rule of thumb while creating reusable pieces of code when working with AngularJS is to use directives when dealing with HTML elements (DOM), and services/factories otherwise.
You also understood that Ionic uses these AngularJS components to expose an easy-to-use API while building mobile hybrid apps.
In the next chapter, you will be introduced to Ionic. You will learn how to set it up, scaffold a basic app, and understand the project structure. You will also take a look at the bigger picture of developing a mobile hybrid application.