QUESTPOND ONLINE COURSE

Angular interview questions with answers

What you'll learn

  • Giving crystal clear answers on constructor vs ngonInit() and Angular component life cycle.To the point answers around ViewChild,ViewChildren,ContentChild , ContentChildren & Content projection.
  • Tackling Advanced interview questions around routing,Lazy Loading, Services & Dependency Injection .
  • How to answer basic questions around directives, CLI,Component , Modules, Decorator,Annotations, Types of Bindings and SPA.
  • Simple lucid answers to Http calls, Routing , Pipes ,Error handling questions and different ways of passing data and in what scenarios to use them.
  • Tricky questions of RxJs like observable , observer , operators, promise vs rxjs, importance of subscribe and understanding push/pull/reactive/imperative.
  • Dedicated chapter on validation covering Template driven,reactive forms,When to use what,Composite& Dynamic validations , Custom & inbuilt validators.

Course Curriculum

Explore the topics covered in this course.

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25 Interview Questions on Angular basic concepts - Part 1. Click to view syllabus
Module 1

Question 1 :- Whats the use  of Angular ?
Question 2 :- What are directives in Angular  ?
Question 3 :- Explain the different types of Angular directives  ?
Question 4 :- Explain the importance of NPM and Node_Modules folder ?
Question 5 :- Explain the importance of Package.json file in Angular ?
Question 6 :- What is typescript and why do we need it ?
Question 7 :- Explain importance of Angular CLI ?
Question 8 :- Explain the importance of Component and Modules ?
Question 9 :- What is a decorator in Angular ?
Question 10 :- What are Annotation or MetaData ?
Question 11 :- What is a template ?
Question 12 :- Explain the four types of Data bindings in Angular ?
Question 13 :- Explain architecture of Angular ?
Question 14 :- What is SPA in Angular ?
Question 15 :- How to implement SPA in Angular ?
Question 16 :- How to implement routing in Angular
?Question 17 :- Explain Lazy Loading ?
Question 18 :- How to implement Lazy Loading in Angular ?
Question 19 :- Define Services ?
Question 20 :- What is Dependency Injection ?
Question 21 :- How to implement Dependency Injection ?
Question 23 :- Whats the benefit of Dependency Injection ?
Question 24 :- Differentiate between ng serve and ng build ?
Question 25 :- Explain the --prod parameter in ng build ?

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Covered 6 Important questions on ViewChild and ViewChildren in Angular - Part 2. Click to view syllabus
Module 2

Question 26 :- Explain ViewChild and ViewChildren ?
Question 27 :- Why do we need Template reference variables ?
Question 28 :- What is ContentProjection ?
Question 29 :- Explain Content projection Slot ?
Question 30 :- What is ContentChild and ContentChildren?
Question 31 :- ViewChild vs ViewChildren vs ContentChild vs ContentChildren ?

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Questions around Angular component lifecycle - Part 3. Click to view syllabus
Module 3

Question 32 :- Explain the importance of Component life cycle ?
Question 33 :- Explain events and sequence of component life cycle ?
Question 34 :- constructor vs ngOnInit() ?

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Tricky Interview questions on HTTP calls, Emitters & Routing - Part 4. Click to view syllabus
Module 4

Question 35 :- How to make HTTP calls using Angular ?
Question 36 :- What is the need of Subscribe function ?
Question 37 :- How to handle errors when HTTP fails ?
Question 38 :- How to pass data between components ?
Question 39 :- What are input , output and event emitters ?
Question 40 :- How to pass data during routing ?
Question 41 :- Is it a good practice to pass data using services ?

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Questions on Angular Pipes - Part 5. Click to view syllabus
Module 5

Question 42 :- What is the need of Angular Pipes ?
Question 43 :- Can you name some built-in Angular pipes ?
Question 44 :- How to create Custom pipes in Angular ?

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Ten important questions on RxJS (Reactive Extensions for JavaScript) - Part 6 Click to view syllabus
Module 6

Question 45 :- What is the fullform of RxJS ?
Question 46 :- What is the purpose of RxJS ?
Question 47 :- What are Observables and Observers ?
Question 48 :- Explain the use of Subscribe with sample code ?
Question 49 :- How to unsubscriber in RxJS ?
Question 50 :- Explain the concept of operators with sample code?
Question 51 :- How to install RxJS ?
Question 52 :- Differntiate between promise and RxJS ?
Question 53 :- In Angular where have you used RxJS?
Question 54 :- Which operators have used from RxJS ?
Question 55 :- What is the Push/Reactive vs Pull/Imperative?

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Essential questions around Interceptors - Part 7. Click to view syllabus
Module 7

Question 56 :- What are Interceptors in Angular?
Question 57 :- How to implement Interceptors?
Question 58 :- Give some use of Interceptors?
Question 59 :- Can we provide multi-Interceptors?

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13 Important Interview Questions on Angular Validations - Part 8 Click to view syllabus
Module 8

Question 60 :- What are two ways of doing validation in Angular?
Question 61 :- Template driven forms VS Reactive Forms?
Question 62 :- In what situations you will use what?
Question 63 :- Explain template reference variables ?
Question 64 :- How do we implement Template driven forms?
Question 65 :- How do we implement Reactive forms ?
Question 66 :- How can we implement composite validations?
Question 67 :- How to create dynamic validation ?
Question 68 :- How to check if overall validation and specific validations are good ?
Question 69 :- Can you talk about some inbuilt validators ?
Question 70:- How can you create your own custom validator ?
Question 71:- Can we implement angular validators with out FORM tag ?
Question 72:- What is [ngModelOptions]="{standalone: true}" ?