Angular Interview Questions

Angular is a TypeScript-based open-source web application framework led by the Angular Team at Google and the community.

It provides a complete solution for building dynamic client-side applications.

Features include dependency injection, declarative templates, end-to-end tooling, and built-in support for routing, HTTP, and forms.

Angular is used for building single-page applications (SPAs) with modular, testable, and maintainable code.

It follows MVC and MVVM patterns and is opinionated, enforcing a consistent code structure.

Two-way data binding in Angular keeps the model and view in sync automatically.

It is achieved using the [(ngModel)] directive in forms and input fields.

Changes in the UI update the model, and vice versa.

This contrasts with one-way binding, where data flows in one direction only.

Two-way binding simplifies form handling but can be less predictable in complex applications.

Angular services are singleton classes with a narrow, well-defined purpose, such as data fetching, logging, or business logic.

They are injected into components using Dependency Injection (DI) to promote loose coupling and reusability.

Services are created with @Injectable() and can be providedIn: 'root' for application-wide access.

They keep components lean and encapsulate business logic for testing and reuse.