Angular Interview Questions and answers

In this article, we are going to learn about one of the most popular frameworks, Angular is a robust front-end JavaScript framework that is widely used for app development. With the increased popularity, there is a high demand for Angular developers. This article on Angular Interview Questions will present some commonly asked questions and how to answer them. The questions are bifurcated into two levels, beginner and advanced.

Angular Interview Question – Beginner Level

1. What is Angular? Why was it introduced?
2. What is TypeScript?
3. What is data binding? Which type of data binding does Angular deploy?
4. What are Single Page Applications (SPA)?
5. Differentiate between Angular and AngularJS
6. What are decorators in Angular?
7. Mention some advantages of Angular.
8. What are the new updates with Angular10?
9. What are Templates in Angular?
10. What are Annotations in Angular?
11. What are Directives in Angular?
12. What is an AOT compilation? What are its advantages?
13. What are Components in Angular?
14. What are Pipes in Angular?
15. What is the PipeTransform interface?
16. What are Pure Pipes?
17. What are Impure Pipes?
18. What is an ngModule?
19. What are filters in Angular? Name a few of them.
20. What is view encapsulation in Angular?
21. What are controllers?
22. What do you understand by scope in Angular?
23. Explain the lifecycle hooks in Angular
24. What is String Interpolation in Angular?
25. What are Template statements?

Angular Interview Question – Advanced Level

1. Why were client-side frameworks like Angular introduced?
2. How does an Angular application work?
3. What are some of the advantages of Angular over other frameworks?
4. List out differences between AngularJS and Angular
5. What is AOT compilation? What are the advantages of AOT?
6. Explain Components, Modules and Services in Angular
7. What are lifecycle hooks in Angular? Explain a few lifecycle hooks.
8. Explain string interpolation and property binding in Angular.
9. How are Angular expressions different from JavaScript expressions?
10. How are observables different from promises?
11. Angular by default, uses client-side rendering for its applications.
12. What are directives in Angular?
13. How does one share data between components in Angular?
14. Explain the concept of Dependency Injection?
15. Explain MVVM architecture
16. What is the difference between AOT and JIT?
17. Explain the @Component Decorator.
18. What are Services in Angular?
19. What are Promises and Observables in Angular?
20. What is ngOnInit? How is it defined?
21. How to use ngFor in a tag?
22. What are Template and Reactive forms?
23. What is Bootstrap? How is it embedded into Angular?
24. What is Eager and Lazy loading?
25. What type of DOM does Angular implement?

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