What is Angular, and how is it different from AngularJS?

Question

Accepted Answer

Angular is a TypeScript-based frontend framework by Google for building single-page applications. The current version (Angular 17+) is a complete rewrite of the original AngularJS (1.x) released in 2010. Language — Angular uses TypeScript ; AngularJS used plain JavaScript. Architecture — Angular is component-based with one-way data flow; AngularJS used controllers and two-way $scope binding. Mobile-first — Angular built for performance on mobile devices; AngularJS was desktop-only. CLI tooling — Angular ships Angular CLI for scaffolding, build, and test; AngularJS had no official CLI. Modular structure — NgModules + standalone components in modern Angular; AngularJS used directives and controllers. RxJS-driven — reactive observable patterns built in. AngularJS reached EOL — ended Long-Term Support in January 2022; new projects use Angular. Never call modern Angular 'AngularJS' — instant junior tell. AngularJS = 1.x (2010, $scope); Angular = 2+ rewrite (TypeScript, components, signals).