Angular Interview Questions & Answers (Easy English + Hindi)
📌 Table of Contents
- Login Check
- JWT Storage
- Route Protection
- Route Guard
- Resolver
- Auth vs Authorization
- SSR
- Large Data
- Pagination
- Interceptor
- Angular Features
- Forms
- FormControl
- trackBy
- Directives
- HostBinding
- Components
- JavaScript
Explore more in our Angular tutorials and JavaScript basics.
1. How do you check if a user is logged in in Angular?
English: When user logs in, backend sends a JWT token. We store it in localStorage or cookies. To check login, we verify if token exists.
Hindi: User login ke baad backend JWT token deta hai. Hum usko localStorage ya cookies me store karte hain. Agar token hai → user logged in hai.
2. Where do you store JWT token?
English: localStorage, sessionStorage, cookies
Hindi: localStorage, sessionStorage, cookies
3. How to protect routes?
English: Use Auth Guard (CanActivate)
canActivate(): boolean {
return !!localStorage.getItem('token');
}Hindi: Auth Guard use karte hain → token hai to allow, warna redirect
4. What is Route Guard?
English: Controls navigation
Hindi: Decide karta hai access milega ya nahi
5. What is Resolver?
English: Loads data before component loads
Hindi: Component se pehle data load karta hai
6. Authentication vs Authorization
English: Auth → Who you are | Authorization → What you access
Hindi: Auth → Login | Authorization → Access
7. What is SSR?
English: Server Side Rendering improves speed & SEO
Hindi: Server pe render hota hai → fast + SEO
8. Large Data Handling
Answer: Use Pagination
9. What is Pagination?
English: Show limited data per page
Hindi: Data ko page wise dikhana
10. What is Interceptor?
English: Modify HTTP requests
req.clone({
setHeaders: { Authorization: `Bearer ${token}` }
});Hindi: HTTP request modify karta hai
11. Latest Angular Features
Signals, Standalone Components, Zone.js optional
12. Types of Forms
Template-driven, Reactive
13. What is FormControl?
Form field ka value + validation track karta hai
14. What is trackBy?
Performance improve karta hai (DOM re-render avoid)
15. What are Directives?
DOM behavior change karte hain
16. HostBinding & HostListener
HostBinding → style change | HostListener → event listen
17. Smart vs Dumb Component
Smart → API logic | Dumb → UI display
18. Why JavaScript is important?
Angular JS pe based hai → JS strong hona zaruri hai
Quick Summary Table
| Topic | Key Point |
|---|---|
| Auth | JWT Token |
| Routing | Guards |
| Performance | Pagination + trackBy |
| Forms | Reactive Forms |
| Core | JavaScript |
Use tools like Angular Official Docs and ChatGPT for practice.
Frequently Asked Questions
Is Angular easy for beginners?
Yes, if JavaScript basics are strong.
What is most important for Angular interview?
JavaScript + core concepts + practical logic.
