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Difference between AngularJS and Angular.
AngularJS (version 1.x) and Angular (version 2+) are both open-source front-end frameworks developed by Google for building web applications. Despite sharing a name, Angular is a complete rewrite of AngularJS with a fundamentally different architecture, language, and design philosophy.
AngularJS
AngularJS is a JavaScript-based framework mainly used to develop single-page applications. It extends static HTML into dynamic HTML using directives and follows the MVC (Model-View-Controller) design pattern. AngularJS reached end-of-life in December 2021.
Angular
Angular (version 2 and above) is a complete rewrite of AngularJS, built with TypeScript. It uses a component-based architecture, has Angular CLI for project scaffolding, supports mobile-friendly development, and uses a hierarchical dependency injection system.
Key Differences
| Feature | AngularJS (1.x) | Angular (2+) |
|---|---|---|
| Architecture | MVC (Model-View-Controller) | Component-based with directives |
| Language | JavaScript | TypeScript |
| Mobile Support | Not mobile-friendly | Mobile browser friendly |
| Data Binding Syntax |
{{ }} and ng-bind
|
( ) for events, [ ] for properties |
| Dependency Injection | Not used | Hierarchical DI system |
| Routing | $routeProvider.when() |
@Route configuration / RouterModule |
| CLI Tool | Not available | Angular CLI for scaffolding and builds |
| Scalability | Difficult to manage large codebases | Better structured for large applications |
| Status | End-of-life (Dec 2021) | Actively maintained |
Conclusion
AngularJS is a legacy framework that has reached end-of-life and should not be used for new projects. Angular (2+) is a modern, component-based framework written in TypeScript with better performance, mobile support, CLI tooling, and scalability for enterprise applications.
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