Top Angular Interview Questions
Top Angular Interview Questions and Answers
Top Angular Interview Questions
Angular interview questions frequently cover fundamental concepts such as dependency injection, routing, data binding, and component lifecycle hooks. These questions assess candidates' understanding of Angular's core mechanisms and their ability to apply them in real-world scenarios. They are crucial because they ensure that candidates possess the necessary knowledge to work effectively with Angular and contribute to the development of robust and maintainable web applications.
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1 - Explain the Angular component lifecycle.
Answer: Angular components have a lifecycle that includes the following stages: Initialization, Change Detection, and Destruction.
2) What is the difference between AngularJS and Angular?
Answer: AngularJS is a full blown framework, while Angular is a set of libraries that can be used to build applications. AngularJS is more opinionated, while Angular is more modular.
3) What is the purpose of the Angular CLI?
Answer: The Angular CLI (Command Line Interface) is a tool that helps to create, develop, and maintain Angular applications.
4) What are the advantages of using Angular over other frameworks?
Answer: Angular is fast, scalable, and easy to use. It has a large community of developers and a wide range of resources available.
5) What is the difference between a directive and a component in Angular?
Answer: Directives are used to modify the behavior of existing HTML elements, while components are used to create new HTML elements.
6) What is the purpose of the Angular Router?
Answer: The Angular Router is a module that helps to create and manage the navigation between different components in an Angular application.
7) What are the different types of dependency injection in Angular?
Answer: Angular supports three types of dependency injection: constructor injection, property injection, and method injection.
8) What is the difference between a service and a provider in Angular?
Answer: Services are classes that are used to provide functionality to components. Providers are used to create and manage services.
9) What is the purpose of the Angular Ivy compiler?
Answer: The Angular Ivy compiler is a new compiler that was introduced in Angular 9. It is designed to improve the performance of Angular applications.
10) What are the best practices for writing Angular code?
Answer: Some best practices for writing Angular code include using a consistent coding style, following the Angular coding conventions, and using the Angular CLI to manage the project.
11 - What are the future of Angular?
Answer: The future of Angular is bright. The Angular team is constantly working on new features and improvements, and the community is growing. Angular is poised to continue to be a leading framework for building web applications.
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Functional Tools
Tools Used in ‘Top Angular Interview Questions’ Course:
1 - Angular CLI (Command Line Interface): A powerful tool for scaffolding, building, testing, and deploying Angular applications.
Enables quick and efficient project setup and management.
Provides standardized commands for common development tasks.
2) Angular Material: A comprehensive library of UI components that enhance application aesthetics and functionality.
Includes a wide range of ready to use components for design consistency.
Abstract away underlying implementation, simplifying development.
3) RxJS (Reactive Extensions for JavaScript): A library for creating and managing asynchronous data streams.
Facilitates reactive programming, enabling efficient handling of asynchronous events.
Offers operators for manipulating, transforming, and filtering data streams.
4) Node.js and Express.js: A JavaScript runtime environment and a web framework, respectively, used for server side development.
Power the backend functionality of Angular applications.
Enable communication between the frontend and backend, handling requests and responses.
5) Jest and Jasmine: Testing frameworks for Angular applications.
Allow for writing comprehensive unit and integration tests.
Help ensure code quality, stability, and maintainability.
6) DevTools: Built in tools in modern browsers that provide real time insights into application performance.
Offer features such as performance monitoring, DOM inspection, and memory analysis.
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