How Angular was design or History of Angular?
Angular JS (version 1.0) the very first version was developed/Invented by two developer’s names Misko Hevery and Adam Abrons in 2009 as a side project. These two developers created a project called GetAngular, which is end to end (e2e) the agenda for creating this side project was make developing web application ease for couple of internal projects they were working on, that allowed web designers or developers to interact with both the front- end (HTML, CSS, JavaScript, Angular) and the back-end ( APIs that are connected with database).
Later Google took this side project rename it as Angular JS and built a team to create and maintain it within Google. It started to develop the entire framework afterwards Google released the first version 1.0 of AngularJS in May 2011. From version 2.0 Google rename the project from Angular JS to Angular.
Angular is complete re-write of Angular JS.
Initially, the rewrite of AngularJS was called "Angular 2", but this caused the confusion between developers. To avoid the confusion the Google Team announced the separate word should be used for each framework version. For AngularJS should referred to the 1.x version and Angular without JS should refer to version 2 and above (4, 5… etc.). Both Angular JS and Angular frameworks are based on Typescript, a superset of JavaScript.
Angular (version2 and above)is different than Angular JS as it is completely re- written from the scratch using TypeScript language.