Angular Interview Question and Answers
Angular Interview Question and Answers: Angular is an open-source, TypeScript-based web application framework that is widely used for building dynamic, interactive single-page applications (SPAs). Developed and maintained by Google, Angular provides a comprehensive set of tools, components, and services that enable developers to easily create complex web applications with ease.
Angular Interview Question and Answers: Angular follows the Model-View-Controller (MVC) architecture and uses two-way data binding to keep the model and view in sync, which eliminates the need for manual manipulation of the DOM. Here we are Providing Important Angular Interview Question and Answers.
What is Angular?
Answer: Angular is a JavaScript framework that is used to build single-page web applications using HTML, CSS, and TypeScript.
What are the key features of Angular?
Answer: The key features of Angular are: Two-way data binding, Dependency injection, Component-based architecture, Templates and directives, RxJS and observables andHTTP client and RESTful APIs
What is the difference between AngularJS and Angular?
Answer: AngularJS is a JavaScript-based framework that was released in 2010, whereas Angular is a complete rewrite of AngularJS that was released in 2016. Angular is built on TypeScript, which is a superset of JavaScript and includes many new features that were not available in AngularJS.
What are directives in Angular?
Answer: Directives are used to add behavior to an existing HTML element or to create a new HTML element with custom behavior. There are three types of directives in Angular: Component directives, Attribute directives and Structural directives
What is dependency injection in Angular?
Answer: Dependency injection is a design pattern used in Angular to provide dependencies to components. This means that a component does not need to create its own dependencies, but instead, it can receive them from an external source.
What is a service in Angular?
Answer: A service is a class in Angular that is used to provide functionality that can be shared across multiple components. Services are typically used for things like data access, logging, and authentication.
What is a module in Angular?
Answer: A module is a container for a set of related components, services, directives, and pipes. Modules are used to organize an Angular application into smaller, reusable blocks of code.
What is lazy loading in Angular?
Answer: Lazy loading is a technique used in Angular to load modules only when they are needed, instead of loading the entire application at once. This can improve performance by reducing the initial load time of the application.
What is change detection in Angular?
Answer: Change detection is a mechanism in Angular that tracks changes to the application’s data and updates the view accordingly. Angular uses a hierarchical change detection strategy to ensure that changes are propagated efficiently throughout the application.
What are pipes in Angular?
Answer: Pipes are used in Angular to transform data before it is displayed in the view. Angular includes several built-in pipes for common tasks like formatting dates and currency values, and developers can also create custom pipes to meet their specific needs.
These are some of the commonly asked Angular interview question. It’s important to note that the question and answers may vary depending on the job requirements and the level of expertise of the candidate.
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