AngularJS (or Angular 1) released in 2009 is the first version of this JavaScript-based web framework. In the subsequent years, AngularJS got its versions one by one, and the latest version of them all is the AngularJS 1.6. The low performance and the vulnerabilities of AngularJS paved the way for what we currently know as Angular (or Angular 2). The Angular is a complete incompatible rewrite of AngularJS and apparently, becomes the first version of Angular.