🅰️ Angular – Web Development Interview Topics

This section covers all Angular topics essential for frontend interviews. Topics include components, dependency injection, lifecycle hooks, services, routing, observables, and RxJS. Every topic features real code, MCQs, and interview Q&A to help you master Angular with confidence.

• 1. What is Angular and how is it different from AngularJS
• 2. What are the key features of Angular
• 3. Explain the Angular architecture
• 4. What are components in Angular
• 5. What is a module in Angular
• 6. What is a template in Angular
• 7. What is a directive in Angular
• 8. What is the difference between structural and attribute directives
• 9. What are services in Angular
• 10. How does dependency injection work in Angular
• 11. What is data binding in Angular
• 12. What is interpolation in Angular
• 13. What is property binding in Angular
• 14. What is event binding in Angular
• 15. What is two-way data binding in Angular
• 16. What is ngModel and how is it used
• 17. What are lifecycle hooks in Angular
• 18. Explain the ngOnInit lifecycle hook
• 19. What is the purpose of ngOnDestroy
• 20. What are pipes in Angular
• 21. What is a pure pipe vs impure pipe
• 22. How do you create a custom pipe in Angular
• 23. What are Angular forms
• 24. What is the difference between template-driven and reactive forms
• 25. What are form controls in Angular
• 26. How do you validate a form in Angular
• 27. How do you show validation error messages
• 28. What is FormGroup and FormControl
• 29. How do you enable or disable form fields dynamically
• 30. How do you reset a form in Angular
• 31. What is routing in Angular
• 32. What is the Angular RouterModule
• 33. How do you configure routes in Angular
• 34. What are route guards in Angula
• 35. What is the difference between CanActivate and CanDeactivate
• 36. What is lazy loading in Angular
• 37. What is preloading in Angular routing
• 38. What is a wildcard route
• 39. How do you pass parameters in routes
• 40. How do you read query parameters
• 41. How do you navigate programmatically in Angular
• 42. What is routerLink and routerLinkActive
• 43. What are resolvers in Angular routing
• 44. What are Observables in Angular
• 45. What is RxJS in Angular
• 46. What is the difference between Observable and Promise