Testing, Performance & Deployment
Angular Interview Questions for Freshers
Angular interviews concentrate on the framework’s distinctive concepts: components and modules, dependency injection, change detection, RxJS operators, forms, and — increasingly — signals and standalone components.
What is Interview Questions for Freshers in Angular?
Angular interviews concentrate on the framework’s distinctive concepts: components and modules, dependency injection, change detection, RxJS operators, forms, and — increasingly — signals and standalone components.
Key points to remember
- Expect to explain the async pipe and why unsubscribing matters.
- Be ready to write a small reactive form with validation on a whiteboard.
- Knowing standalone components and signals signals that you follow current Angular.
Frequently asked, with the answer in one line
| Question | Short answer |
|---|---|
| Angular vs AngularJS? | AngularJS is the 1.x JavaScript framework; Angular 2+ is a TypeScript rewrite with components and DI. |
| What is dependency injection? | Angular supplies a class the objects it declares it needs, instead of the class constructing them. |
| Component vs directive? | A component is a directive with a template; other directives modify existing elements. |
| What is change detection? | The process of checking bindings and updating the DOM after async events. |
| What does OnPush do? | Limits checks to input reference changes, internal events and async pipe emissions. |
| Observable vs Promise? | Observables emit many values, are lazy and cancellable; Promises resolve once. |
| switchMap vs mergeMap? | switchMap cancels the previous inner stream; mergeMap runs them concurrently. |
| Template-driven vs reactive forms? | The model lives in the template versus in the component class. |
| What is a route guard? | A function deciding whether navigation to a route may proceed. |
| What are signals? | Reactive values that track their readers so Angular updates only what depends on them. |
Angular Interview Questions for Freshers— Interview Questions & FAQs
What Angular topics are asked most in fresher interviews?+
Components and data binding, dependency injection and services, lifecycle hooks, RxJS basics with the async pipe, reactive forms, routing with guards, and change detection including OnPush.
Do I need RxJS knowledge for an Angular job?+
Yes — at least Observables, subscribe and unsubscribe, the async pipe, and the common operators map, filter, switchMap, debounceTime and catchError. RxJS appears in almost every Angular codebase.