Angular

 

Prabhakar Changala

                                                                                                                                - Pechgroot

What is Angular

Key features of Angular

AngularJs vs Angular

Core building blocks of Angular

What are the components

How to you create a new Angular app

Role of AppModule in Angular

Describe Angular modules and their purpose

What is dat binding and what are the types

What is Angular CLI, why its useful ?

Certainly! Here's an extensive list of 100 Angular interview questions that cover various aspects of Angular development:

**Angular Basics:**

1. What is Angular, and why is it used?

2. Differentiate between AngularJS and Angular.

3. Explain the Angular CLI (Command Line Interface).

4. Describe the key features of Angular.

5. What are the building blocks of an Angular application?

**Components and Templates:**

6. What is an Angular component?

7. How do you create a new component in Angular?

8. Explain the purpose of templates in Angular.

9. What is data binding in Angular?

10. Differentiate between one-way and two-way data binding.

11. How do you pass data from a parent component to a child component?

12. Describe Angular expressions and their usage in templates.

**Modules and Dependency Injection:**

13. What is an Angular module, and why is it important?

14. How do you create a custom Angular module?

15. Explain the role of `NgModule` metadata.

16. What is dependency injection in Angular, and why is it used?

17. How do you provide a service in Angular?

18. Describe the hierarchical injector in Angular.

**Routing and Navigation:**

19. What is Angular Router, and how do you configure it?

20. How do you define routes in Angular?

21. Explain lazy loading of Angular modules and its benefits.

22. What is the purpose of router outlets in Angular?

23. How do you pass data between routed components?

24. Describe route guards and their types in Angular.

**Forms and Validation:**

25. What are template-driven and reactive forms in Angular?

26. How do you perform form validation in Angular?

27. Explain the use of `ngModel` in template-driven forms.

28. Describe the purpose of `FormGroup` and `FormControl` in reactive forms.

29. How do you handle form submissions in Angular?

**HTTP and Observables:**

30. How do you make HTTP requests in Angular?

31. What is the purpose of the `HttpClientModule`?

32. Explain the use of observables in Angular.

33. How do you handle errors in HTTP requests in Angular?

34. Describe HTTP interceptors and their use cases.

**State Management:**

35. What is Angular's recommended approach for state management?

36. Explain the purpose of NgRx in Angular.

37. Describe the components of the NgRx library (Store, Actions, Reducers, Effects).

**Testing in Angular:**

38. How do you write unit tests for Angular components?

39. What is TestBed, and how is it used in Angular testing?

40. Describe end-to-end (e2e) testing in Angular using tools like Protractor.

41. What is Jasmine, and how does it relate to Angular testing?

**Performance and Optimization:**

42. How can you optimize the performance of an Angular application?

43. What is Ahead-of-Time (AOT) compilation in Angular, and why is it important?

44. Explain lazy loading of modules for performance improvement.

45. How can you reduce the bundle size of an Angular application?

46. What is Angular Universal, and what is its purpose?

**Angular Best Practices:**

47. What are some best practices for organizing the file structure of an Angular project?

48. How do you handle security in Angular applications?

49. What are Angular decorators, and when should you use them?

50. Explain Angular's change detection mechanism.

51. What is ng-container, and why is it used in Angular templates?

52. How do you use ngIf and ngFor together in an Angular template?

53. What is ng-content, and how is it used in Angular?

**Additional Topics:**

54. Describe Angular's support for internationalization and localization.

55. How do you handle forms that span multiple components in Angular?

56. Explain the purpose of Angular animations.

57. How can you implement lazy loading of images in Angular?

58. What is Angular's HTTP client testing module?

59. How do you create a custom validator in Angular?

60. Explain Angular's ViewChild and ContentChild decorators.

61. What is Angular's support for Web Workers?

**Advanced Concepts:**

62. Describe Angular's change detection strategy.

63. How can you optimize performance when working with large lists in Angular?

64. Explain the role of ngZone in Angular.

65. Describe Angular's support for server-side rendering (SSR).

66. What is the Angular Ivy compiler, and how does it benefit applications?

67. How do you handle errors and exceptions in Angular applications?

68. Explain Angular's support for progressive web apps (PWAs).

69. How can you achieve server-side rendering (SSR) with Angular Universal?

**Deployment and Build Process:**

70. How do you build and deploy an Angular application?

71. Explain the purpose of the Angular production build.

72. What is Angular's use of Webpack in the build process?

73. How do you enable production mode in Angular?

74. Describe the process of deploying an Angular app to a web server.

**Third-Party Libraries and Integration:**

75. How can you integrate Angular with third-party libraries, such as jQuery or D3.js?

76. Explain how to use Angular with Redux for state management.

77. What is Angular Material, and how is it used for UI components?

**Security in Angular:**

78. How can you mitigate security risks like Cross-Site Scripting (XSS) in Angular?

79. Explain Angular's built-in security features.

80. Describe Angular's support for Content Security Policy (CSP).

**Authentication and Authorization:**

81. How do you implement authentication in an Angular application?

82. Explain the use of JSON Web Tokens (JWT) for authentication in Angular.

83. What is route-based authentication in Angular?

84. Describe role-based authorization in Angular.

**Server Communication:**

85. How do you handle authentication and authorization when making HTTP requests in Angular?

86. Explain how to use interceptors for adding headers to HTTP requests.

87. What is the purpose of CORS (Cross-Origin Resource Sharing) in Angular?

88. How can you handle long-polling or real-time updates in Angular?

**Cross-Browser Compatibility:**

89. How do you ensure cross-browser compatibility in an Angular application?

90. Explain the concept of polyfills in Angular.

**Error Handling:**

91. How do you handle errors in Angular services and components?

92. Describe Angular's error handling mechanisms, including error handling in observables.

93. What is the purpose of the ErrorHandler class in Angular?

**Internationalization and Localization:**

94. How can you internationalize an Angular application?

95. Describe the use of Angular's internationalization (i18n) pipes.

96. Explain how to work with multiple languages and translations in Angular.

**Angular Forms:**

97. What are dynamic forms in Angular, and how do you create them?

98. How can you implement form wizards or multi-step forms in Angular?

99. Describe the purpose of FormBuilder in reactive forms.

100. How do you implement custom form controls or widgets in Angular?

Please note that these questions are intended to cover a wide range of Angular topics and are suitable for different levels of interviews, from junior to senior roles. Depending on the specific job requirements, the interviewer may ask questions from various sections of this list. Be sure to prepare thoroughly for the topics that align with the position you are applying for.