Angular Interview Questions And Answers || Part-2

If you are preparing for an interview for a position that requires Angular skills, it’s important to be familiar with the most common interview questions related to this framework. In this article, we will cover some more Angular interview questions and provide detailed answers to help you ace your interview.

1. What are services in Angular and how are they created?

Services in Angular are singleton objects that can be used to organize and share code across different components. They are typically used for tasks such as data fetching, authentication, and logging. Services are created using the @Injectable() decorator and can be injected into components or other services using dependency injection.

2. What is routing in Angular and how is it implemented?

Routing in Angular refers to the ability to navigate between different views or components in a single-page application. This is typically achieved using the RouterModule and its NgModule configuration. Routes are defined using the Routes array, where each route is mapped to a specific component and URL path. In the main application module, the RouterModule.forRoot() method is used to configure the application’s root routing.

3. How does dependency injection work in Angular?

Dependency injection is a core concept in Angular that allows components, services, and other objects to depend on each other in a loosely coupled manner. When a component or service requires a dependent object, it specifies its dependencies in the constructor. Angular’s dependency injection system then takes care of instantiating and providing the necessary dependencies at runtime. This promotes modular and testable code by allowing components to be easily swapped or mocked during testing.

4. What are Angular modules and why are they used?

Angular modules are containers for different parts of an Angular application, such as components, services, directives, and pipes. They are used to organize the application into cohesive blocks of functionality and to enable modularization and reusability. Modules are created using the NgModule decorator and can be imported and exported to other modules to establish their relationships and dependencies.

5. How is data binding implemented in Angular?

Data binding in Angular refers to the synchronization of data between the component and the view. There are four types of data binding supported in Angular: interpolation, property binding, event binding, and two-way binding. Interpolation uses double curly braces to display component data in the view, property binding allows the component to set properties in the view, event binding enables the view to trigger events in the component, and two-way binding combines property binding and event binding to achieve bi-directional data flow.

These are just a few examples of the many potential questions related to Angular that you might encounter in an interview. By studying and practicing your answers to these questions, you can increase your chances of impressing potential employers and landing a job as an Angular developer.

Stay tuned for more Angular interview questions and answers in future articles!