Angular Interview Questions in 2023 - Instaily Academy

Interview
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Instaily Academy

Angular Interview
Questions in 2023
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Introduction
Angular is a robust and popular framework for building single-page applications (SPAs) and web
applications. It offers a comprehensive set of tools and features that empower developers to create
dynamic, interactive, and scalable web experiences.
Angular was built by Google's engineers and a vibrant open-source community. Google initiated the project
with the first version, AngularJS, and later led the complete rewrite with Angular (Angular 2+).
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Q1. What is Angular?
Angular is an open-source web application framework developed by Google and a community of developers. It
simplifies the creation of dynamic, single-page web applications (SPAs) by providing a structured and
organized approach to front-end development. Angular uses TypeScript as its primary programming language
and employs a component-based architecture, making it easier to build and maintain web applications.
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Q2. What are the benefits of using Angular?
Using Angular offers several benefits in web application development:
Modular Development
TypeScript Integration
Two-Way Data Binding
Dependency Injection
Powerful Templating
Rich Ecosystem
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Q3. What are the different components of an Angular
application?
Components
Modules
Services
Templates
Directives
Pipes
Routing
Dependency Injection
Metadata
Interceptors
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Q4. What is data binding in Angular?
Data binding in Angular is a powerful feature that allows you to establish a connection between the user
interface (UI) and the application’s data. It enables automatic synchronization of data between the two,
ensuring that changes in one are reflected in the other without manual intervention.
Interpolation (One-Way Binding)
Property Binding (One-Way Binding)
Event Binding (One-Way Binding)
Two-Way Binding
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Q5. What is dependency injection in Angular?
Dependency injection (DI) is a fundamental concept in Angular that helps manage the dependencies of
components and services within an application. It is a design pattern and a technique for achieving Inversion of
Control (IoC) in software development.
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Q6. What is routing in Angular?
Routing in Angular refers to the mechanism that allows you to navigate between different views or
components within a single-page application (SPA). It enables users to move between different sections of
your web application without the need for a full page reload. Angular’s built-in router provides a way to define
and manage the application’s routes, handling navigation and displaying the appropriate component based on
the URL.
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Q7. What is the Angular CLI?
The Angular CLI, or Command Line Interface, is a powerful tool that simplifies the process of creating,
developing, and deploying Angular applications. It provides a set of commands to automate various tasks,
such as generating components, services, and modules, building and testing the application, and deploying it
to production. It saves developers time and effort by setting up the project structure and configurations
automatically.
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Q8. What is change detection in Angular?
Change detection is a core mechanism in Angular that tracks changes in the application’s state and updates
the user interface accordingly. It ensures that the view reflects the most up-to-date data from the component’s
model.
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Q9. How does change detection work in Angular?
Angular uses a tree of components to perform change detection. During each change detection cycle, Angular
checks the component tree, starting from the root component, and looks for changes in properties or events.
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Q10. What are the different types of change detection in
Angular?
Angular supports two types of change detection:
Default (Zone.js)
OnPush
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Read Most Asked Angular Interview Questions on Our Blog
and Prepare for Your Next Interview.
We Wish You Best of Luck
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Angular Interview Questions in 2023 - Instaily Academy

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