Angular Experienced Interview Questions
Comprehensive Guide to Angular Experienced Interview Questions
Angular Experienced Interview Questions
Angular experienced interview questions typically cover a wide range of topics, such as advanced features of Angular like lazy loading, server-side rendering, and unit testing; knowledge of Angular best practices and design patterns; understanding of performance optimization techniques like change detection strategies and bundling; experience with state management libraries like NgRx; proficiency in RxJS to handle asynchronous operations effectively; familiarity with Angular CLI commands and build processes; expertise in integrating third-party libraries and APIs with Angular applications; and problem-solving skills to address complex issues and bugs in Angular projects. Additionally, interview questions may also delve into the candidate's experience with Angular version upgrades, Angular Material design components, and deployment processes for Angular applications. It is crucial for candidates to showcase their in-depth understanding and practical experience with Angular frameworks to succeed in these interviews.
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1 - What is data binding in Angular and explain the different types of data binding?
Data binding in Angular is the automatic synchronization of data between the model and view components. The different types of data binding in Angular are one way binding, two way binding, and one time binding. One way binding flows data from the model to the view. Two way binding establishes a synchronization between the model and the view so that any changes in the model will reflect in the view and vice versa. One time binding is used when the data is static and does not change after rendering.
2) Explain Angular directives and provide examples of built in directives.
Directives in Angular are markers on a DOM element that tell Angular's HTML compiler to attach a specified behavior to that DOM element. Built in directives in Angular include ngFor, which is used for displaying a list of items, and ngIf, which is used for conditionally displaying elements in the DOM based on a condition.
3) What is dependency injection in Angular and why is it important?
Dependency injection in Angular is a design pattern that allows the components of an application to depend on abstractions, rather than concrete implementations. This helps in making components more modular, reusable, and easier to test. Dependency injection is important in Angular as it promotes loose coupling between components and allows for better separation of concerns.
4) How does routing work in Angular and what are Angular Guards?
Routing in Angular is the process of navigating between different components in an application based on the browser URL. Angular uses a built in router module to handle navigation between components. Angular Guards are interfaces that can be implemented to control the behavior of the router based on certain conditions, such as preventing access to certain routes if a user is not authenticated.
5) What are Observables in Angular and when to use them?
Observables in Angular are a way to handle asynchronous data streams. They are used for handling events, notifications, and handling sequences of data over time. Observables are often preferred over Promises in Angular for handling multiple values over time. Observables are used when working with AJAX requests, handling event handling, and handling data streams in Angular applications.
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