Introduction to Angular
Angular is an open source project maintained by Google and a community of developers. The new Angular platform is vastly different from the legacy framework you may have used in the past. In collaboration with Microsoft, Google made TypeScript the default language for Angular. TypeScript is a superset of JavaScript that enables developers to target legacy browsers such as Internet Explorer 11, while allowing them to write modern JavaScript code that works in evergreen browsers such as Chrome, Firefox, and Edge. The legacy versions of Angular, versions in the 1.x.x range, are referred to as AngularJS. Version 2.0.0 and higher versions are called Angular. Where AngularJS is a monolithic JavaScript SPA framework, Angular is a platform that is capable of targeting browsers, hybrid-mobile frameworks, desktop applications, and server-side rendered views.
Upgrading to the new AngularJS was risky and costly because even minor updates introduced new coding...