Angular Interview Questions

Q21 What is FormBuilder in Angular? Generate → Q22 How does Angular handle HTTP requests? Generate → Q23 What are Observables in Angular? ✓ Answered → Q24 What is RxJS and why is it used in Angular? Generate → Q25 What is the difference between Promise and Observable? ✓ Answered → Q26 How do you handle errors in Angular HTTP calls? ✓ Answered → Q27 Explain Angular component lifecycle hooks in detail. ✓ Answered → Q28 What is the difference between ngOnInit and constructor? ✓ Answered → Q29 How does Angular change detection work? ✓ Answered → Q30 What is Zone.js and why does Angular use it? ✓ Answered → Q31 Explain dependency injection hierarchy in Angular. ✓ Answered → Q32 What are Angular services and how are they provided? ✓ Answered → Q33 What is providedIn: root in Angular services? ✓ Answered → Q34 Explain the difference between BehaviorSubject and Subject. ✓ Answered → Q35 What is the async pipe and how does it work? ✓ Answered → Q36 How does Angular routing work internally? ✓ Answered → Q37 What is lazy loading and how is it implemented? ✓ Answered → Q38 What are route resolvers? ✓ Answered → Q39 Explain route guards and their types. ✓ Answered → Q40 What is ActivatedRoute and how is it used? ✓ Answered →