Top 15 Angular Interview Questions for 2024
Are you getting ready for an Angular interview and are feeling overwhelmed by the sheer number of subjects to discuss? Do not worry; we’ve got everything covered! This article will look at the most frequently inquired Angular interview questions for 2024. If you’re an experienced Angular developer or are just beginning your journey to learn about the framework These questions can assist you in improving your knowledge and make you feel more confident in your interview.
1. What are RxJs in Angular?
RxJs (Reactive Extensions for JavaScript) is an extension library for reactive programming that makes use of observables, which is an efficient way to handle the asynchronous stream of data.
2. What is a parameterized pipeline exactly?
An Angular parameterized pipe Angular lets you add parameters to a pipe in order to modify its behavior. For instance, you could provide argument to the built in slicepipe, which specifies the beginning and ending indexes to slice an array.
3. What is the purpose of these Method decorative elements?
Method decorators within Angular are a set of functions utilized to alter the behavior of methods of classes. They are prefixed by the symbol @ and are used to provide metadata or add behavior to methods.
4. What is a property decorator?
Decorators for property properties in Angular are like method decorators, but they are used to alter the behavior of properties for classes in place of method.
5. What is a router link?
Links to Router that are part of Angular are directives for navigation between various views or components within the Angular application. They work along with Angular router component to determine the navigation paths.
6. What is Angular Material mean?
Angular Material is a UI component library designed for Angular applications that offers built-in and customizable UI components that follow the Google’s Material Design guidelines.
7. What is transpiling to in Angular?
Transpiling within Angular is the process of turning TypeScript scripts to JavaScript code that is able to be run by browsers. This is done with an application known as”the TypeScript compiler (`tsc) that is integrated in the Angular CLI.
8. What is a Bootstrapping Module?
A bootstrapping module within Angular is the primary component that is part of the Angular application in charge of bootstrapping as well as the definition of its primary component.
9. What is HTTP interceptors?
HTTP interceptors within Angular are a useful feature that lets you capture HTTP requests and replies and modify them prior to when they are delivered to or received by the server. They are often used to accomplish tasks like the addition of authentication headers or logs.
10. What exactly do you mean by Change Detection, and how is it work? Change Detection Mechanism work?
Change detection in Angular is the process of detecting changes to state of the application in order to update the display to reflect those changes. The Change Detection Mechanism is based on looking at the current status of the application with its previous state, then rendering the view only in case there are any changes.
11. How do you select one of the elements from template for components?
In Angular it is possible to select elements from the template for a component by using templates referential variables (`#`) or using Angular directives like ViewChildor ContentChild.
12. What is the best way to exchange data between components in Angular?
Data sharing among components of Angular is possible through various methods such as Output and Input properties, ViewChild and ContentChild decorators services, as well as state management libraries such as NgRx and Redux.
13. What are the key differentiators of AngularJS or Angular?
AngularJS (Angular 1.x) along with Angular (Angular 2+) are two different frameworks that offer major differences in the syntax, architecture and performance. Angular is an entirely revision of AngularJS that includes a number of new features and enhancements.
14. Define lifecycle hooks within Angular by presenting examples.
Lifecycle hooks used in Angular is a method that can be activated at certain points during the development lifecycle for a directive or component. Some examples of hooks for lifecycle are ngOnInit the ngAfterViewInit hook, ngOnDestroy and ngOnDestroy.
15. How do I integrate SASS in my Angular project?
To add SASS (Syntactically Amazing Style Sheets) to the Angular project, utilize the ng Add @angular/materialcommand. This will add Angular Material which comes with support for SASS straight out of the box. Alternately, you can install SASS manually by using npm and then configure it in the Angular project to utilize SASS to be the standard stylesheet language.
The questions cover a wide variety of subjects that are related to Angular and will assist you to get ready for the Angular interview confidently. Be sure to not just memorize the answers but also grasp the concepts behind them to show your proficiency efficiently. Best of luck in your interview!