Top Angular Interview Questions for Freshers

Angular Interview Questions: If you want to be an Angular developer, you’ll need to nail your interviews. If you want to ace your interviews, you must be well-versed in both fundamental and sophisticated Angular principles.

In this post, we’ll look at Angular questions that you could be asked during an interview.

Remember that you will be asked coding questions in addition to theoretical ones. We’ve compiled a collection of basic and advanced Angular interview questions to help you prepare for the interview.

What is Angular?

Angular is a front-end web application framework built with TypeScript. It is directed to both the browser and the server.

Angular is one of the most popular UI design frameworks today, with hundreds of thousands of developers across the world contributing to its community project.

Its enticing features and speed have made it a vital tool in the repertoire of any web developer. Google maintains it, and its primary use is to create single-page apps.

As a framework, Angular provides major advantages, while also offering a standard design for developers to work with. Developers may use it to construct huge, maintainable applications.

Angular Interview Questions for Freshers

Below are Angular Interview Questions for Freshers:

1. Why were client-side frameworks like Angular introduced?

Previously, web developers used VanillaJS and jQuery to create dynamic websites, but as the logic of a website grew, the code became increasingly difficult to maintain.

For apps that employ complicated logic, developers have to work extra hard to keep the app’s separation of concerns. Furthermore, jQuery did not support data handling across views.

Client-side frameworks such as Angular came into play to address the aforementioned issues, making life simpler for developers by managing the separation of responsibilities. Also, separating code into smaller chunks of information (called Components in the case of Angular).

Client-side frameworks enable the creation of complex web apps such as Single-Page-Application.

2. What is the operation of an Angular application?

Every Angular app is made up of a file called angular.json. This file will include all of the app’s settings. The builder consults this file while creating the app to determine the application’s entry point.

3. What exactly are angular expressions?

Angular expressions are code snippets that are typically used in binding, such as expressions in JavaScript. This phrase is used to connect application data to HTML.

Syntax: {{ expression }}

READ ALSO!!!

4. What are templates in Angular?

Templates in Angular are written with HTML that contains Angular-specific elements and attributes.

These templates are combined with information coming from the model and controller which are further rendered to provide the dynamic view to the user.

5. In Angular what is string interpolation?

String interpolation in Angular is a special syntax that uses template expressions within double curly {{ }} braces for displaying the component data. It is also known as moustache syntax.

The JavaScript expressions are included within the curly braces to be executed by Angular and the relative output is then embedded into the HTML code.

These expressions are usually updated and registered like watches, as a part of the digest cycle.

4. What are Angular templates?

Angular templates are written in HTML and feature Angular-specific elements and attributes. These templates are merged with information from the model and controller, which is then displayed to present the user with a dynamic view.

5. What is string interpolation in Angular?

String interpolation in Angular is a specific syntax that displays component data by using template expressions within double curly braces. It is sometimes referred to as moustache syntax.

The curly brackets contain the JavaScript expressions that will be run by Angular, and the relative output is then included in the HTML code. As part of the digest cycle, these expressions are often updated and registered in the same way as watches are.

6. In Angular, what is the difference between an Annotation and a Decorator?

In Angular, annotations are the “only” metadata collection of the class that uses the Reflect Metadata library. They are employed in the construction of an “annotation” array.

Decorators, on the other hand, are design patterns that are used to separate decoration or modification of a class without actually changing the underlying source code.

7. What do you mean by Angular controllers?

Controllers are JavaScript functions that supply data and logic to the HTML user interface. They, as the name implies, manage how data flows from the server to the HTML UI.

8. What is the scope of Angular?

Scope in Angular is an object that refers to the application model. It is an execution context for expressions. Scopes are arranged in a hierarchical structure that mimics the DOM structure of the application.

Scopes can watch expressions and propagate events.

9. What are the directives in Angular?

A core feature of Angular, directives are attributes that allow you to write new HTML syntax, specific to your application. They are essentially functions that execute when the Angular compiler finds them in the DOM.

The Angular directives are segregated into 3 parts:

Attribute Directives
Component Directives
Structural Directives

10. What exactly is data binding?

Data binding is one of the most powerful and crucial elements of Angular since it allows you to specify the connection between the component and the DOM (Document Object Model).

It essentially streamlines the process of creating interactive apps by eliminating the need to worry about data pushing and pulling between your view or template and component. There are four types of data binding in Angular:

Event Binding
Property Binding
String Interpolation
Two-Way Data Binding

11. What is the function of an Angular filter?

Filters are used in Angular to prepare the value of an expression before displaying it to the user. These filters may be used in templates, directives, controllers, and services.

Not only that, but you can even construct your own custom filters. Using them, you can easily organize data so that it is displayed only if certain criteria are met.

The pipe symbol |, followed by a filter, is used to apply filters to expressions.

READ ALSO!!!

Unique interview questions
Leader interview questions
SQL interview questions
Java interview questions

12 Explain MVVM architecture

The MVVM architecture eliminates tight dependency between components. The MVVM architecture is divided into three parts:

Model
View
ViewModel

13. What are decorators in Angular?

Decorators are a design technique used to isolate class changes or decoration without altering the underlying source code.

Decorators in AngularJS are functions that allow a service, directive, or filter to be updated before it is used.

Decorator that identifies a class as an Angular component and offers configuration metadata that governs how the component is processed, created, and utilized at runtime.

14. What is the difference between eager and lazy loading?

Before the application starts, the application module, AppModule, is eagerly loaded. In contrast, feature modules include all of the characteristics of each module and may be loaded in two ways: eagerly or slowly, or even preloaded in some circumstances.

15. What is an Angular provider?

In Angular, a provider is a service that may be customized. It is a directive to the Dependency Injection system that specifies how to retrieve a value for a dependency.

It is an object with a $get() function for creating a new instance of a service. A Provider can also have extra methods and register new providers using $provide.

16. Explain the @Component Decorator.

A component decorator (@Component) allows you to identify a class as an Angular component and provide metadata that governs how the component is processed, created, and utilized at runtime.

Components are the most essential building components of the user interface of an Angular application.

Checkout out other unique articles on our blog for more detailed information and do well to share ”Angular Interview Questions ” with your friends and family. Follow us on our Twitter and Facebook to stay updated with premium information.