Although the content of this book can be properly digested without any prior AngularJS or Angular experience, you will get most of the book if you are familiar with the basics of AngularJS and you are willing to switch to Angular.
On the internet, often AngularJS and Angular 1 are used interchangeably to refer to the AngularJS framework. This misconception leaves AngularJS experts confused about the Angular versioning. Very often, in many community events, I get questions similar to this one:
Here, you can replace X with any number bigger than 2.
The short answer to this question is: no, you don't have to learn a new framework when a new major version is released. In fact, the API deprecations between Angular 2 and Angular 5 can be listed on a few lines.
This confusion was brought mostly by incorrectly referring to AngularJS as Angular 1, which makes developers believe that every new version of Angular will be as different from the old one as Angular is from AngularJS.
Along the remaining sections of this chapter and in Chapter 2, Get Going with Angular, we will explain how Angular differs from AngularJS and why the development of a new framework was required.
