Angular 8 Interview Questions And Answers For Experienced
Comprehensive Guide: Angular 8 Interview Questions and Answers for Experienced Professionals
Angular 8 Interview Questions And Answers For Experienced
For experienced Angular 8 developers, common interview questions may cover advanced topics such as lazy loading, server-side rendering, Angular Universal, performance optimization techniques, RxJS and observables, dependency injection, unit testing with Jasmine and Karma, Angular CLI customization, Angular forms and validation, error handling and logging, security best practices, angular routing strategies, and Angular design patterns like NgRx for state management. Answers should demonstrate in-depth knowledge of Angular concepts and best practices, as well as practical experience in building complex applications. Successful candidates should be able to articulate their problem-solving skills, ability to reason through architectural decisions, and expertise in optimizing Angular applications for performance and maintainability.
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1 - What are the key features of Angular 8?
Angular 8 comes with Ivy renderer, which offers better bundle size and improved debugging experience. It also introduces differential loading of modern JavaScript for improved performance. The new compiler can help in faster rebuilds of applications. Angular 8 supports TypeScript 3.4 and provides better support for Web Workers. It also offers improved APIs for service workers and dynamic imports.
2) Explain the concept of lazy loading in Angular 8.
Lazy loading is a technique used in Angular 8 to load only the necessary modules when the user navigates to a specific route, thus improving the application's performance by reducing the initial bundle size. With lazy loading, modules are loaded on demand rather than at the application's startup, making the application faster and more efficient.
3) How does Angular 8 handle errors in HTTP requests?
Angular 8 provides the HttpClient module, which simplifies handling HTTP requests and responses. In case of errors during an HTTP request, Angular 8 offers mechanisms such as error handling with operators like catchError, retry logic, and global error handling using interceptors to manage and handle errors effectively.
4) What is Angular Material and how can it be integrated with Angular 8?
Angular Material is a UI component library for Angular applications that provides pre built material design components. Integrating Angular Material with Angular 8 involves installing the Angular Material library using npm, importing the required modules in the application, and using the provided components and styling to create a visually appealing and consistent user interface.
5) Discuss the advantages of using RxJS in Angular 8 applications.
RxJS, or Reactive Extensions for JavaScript, is a popular library for handling asynchronous operations and event based programming in Angular applications. By using RxJS observables and operators, developers can easily manage and compose complex asynchronous operations, handle data streams more efficiently, and build responsive and reactive user interfaces in Angular 8 applications.
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