InterviewPreparationKit/angularJSInterview.txt at master · codeztech-atique/InterviewPreparationKit · GitHub

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Angular JS interview questions -

Angular2+ Interview Questions -

1. RXJS — Done
2. Obsersable, Observer, Subscriber — Done
3. Sharing data between components 4 method - Done
4. How to define routes in Angular2+ - Done
5. Diff between angular1 and angular2
6. Dependency injection? https://www.youtube.com/watch?v=jWODteEGQmw
7. Angular Dynamic component generate
8. What is Authguard ? https://www.youtube.com/watch?v=UrfhqE7I-3o&list=PLC3y8-rFHvwg2RBz6UplKTGIXREj9dV0G&index=26&t=0s
9. CanActivate and CanDeactivate Routes https://www.youtube.com/watch?v=UrfhqE7I-3o&list=PLC3y8-rFHvwg2RBz6UplKTGIXREj9dV0G&index=26&t=0s
10. Interface
11. View Encapsualtion in Angular - https://www.youtube.com/watch?v=MfDZ1BrmnKM - all the style name angular takes care about it, comes as a <div ngContent1></div> — Import inside the component = There are 4 types.
12. http interceptor | Error Handling
13. How to load dynamic component - https://www.youtube.com/watch?v=LjCOe1PcP5g — Need to add under EntryComponent Inside ngModule, call method ngAfterContentInit
14. Cancel promise in angular
15. A pure pipe - https://www.youtube.com/watch?v=ZGwcLYujQlU  --> Any changes detact on the pipe
16. An impure pipe - https://www.youtube.com/watch?v=ZGwcLYujQlU --> Any changes detact on the angular app
17. How to create a pipe in Angular 6+
18. What is Providers ? - Done (Including modules to access that services accross the components)
19. Lazy Loading - https://www.youtube.com/watch?v=6iWw1XfvFzQ - Done [We can use loadChildren in while defining the routes]
20. What all are the directives are there in angular6 - https://www.youtube.com/watch?v=puiweCUmcOc
20. Custom directives  - https://www.youtube.com/watch?v=lxts9If94xA
21. Single page and multi page application - https://www.youtube.com/watch?v=jA7Xvw1JNw4 - Done
22. Template driven and Model Driven in Angular 6 - Done
23. In Rxjs why we use map operator - Done
24. In Rxjs pipe method | RXJS switch - Done
25. Switch map in Rxjs - Done
26. Promise and observable diff - Done
27. Dynamic component generate in angular8 -  https://stackoverflow.com/questions/39285550/what-is-impure-pipe-in-angular#:~:text=A%20pure%20pipe%20is%20only,or%20parameter(s)%20changes.
28. AngularJs and Angular 2 Differance [Template Driven and Model Driven] - Done
29. Subject vs Behavior Subject
30. How angular works - https://www.youtube.com/watch?v=jt32RlXUBuI
31. Learn SDLC Life cycle


Normal Video Watch -

1. RXJS  - Observables vs Promise


Differance between subject and behaviourSubject -

1. If we change the routes, Behavior subject always holds the last Data.
But Subject does lose all the data, if we change the routes. https://www.youtube.com/watch?v=U0Dx5gm6Ylw

2. Subject is not storing new value, but behaviourSubject it will store the new value.

Senario

If the user login, need to show the name top of the dashboard, where behaviour subject comes into the picture.

RXJS - ForkJoin -

https://www.youtube.com/watch?v=5TnWFaI49aw

Act Like javascript Promise.All[]