HCLTech Angular Developer Interview Questions and Answers

Pipes in Angular are used for transforming data in templates.

• Pipes are used to format data before displaying it in the view

• They can be used to filter, sort, or transform data in various ways

• Examples include date pipe, currency pipe, and uppercase/lowercase pipe

I use Java version 8 for Angular development.

• I use Java 8 for its compatibility with Angular frameworks and libraries.

• Java 8 introduced features like lambda expressions and streams which are useful in Angular development.

• Example: I use Java 8 to write backend services for my Angular applications.

Java 8 introduced several new features including lambda expressions, functional interfaces, streams, and default methods.

• Lambda expressions allow you to write code in a more concise and readable way.

• Functional interfaces provide a way to define interfaces with a single abstract method.

• Streams allow you to process collections of objects in a functional style.

• Default methods allow you to add new methods to interfaces wit

I have 5 years of experience in developing web applications using Angular.

• Developed responsive web applications using Angular framework

• Implemented RESTful APIs to fetch and update data

• Worked on optimizing performance and improving user experience

• Collaborated with UI/UX designers to create visually appealing interfaces

A directive in Angular is a class with a @Directive decorator that allows you to attach behavior to elements in the DOM.

• Directives are used to manipulate the DOM, add behavior to elements, and create reusable components.

• There are three types of directives in Angular: Component, Structural, and Attribute directives.

• Examples of directives include ngIf, ngFor, and ngStyle.

Implementing a login page involves creating a form for users to input their credentials and validating them against a database.

• Create a login form with fields for username and password

• Use Angular's form validation to ensure required fields are filled out

• Send the user's credentials to a backend server for authentication

• Upon successful authentication, redirect the user to the main application page

Building blocks of Angular include components, modules, services, directives, templates, and dependency injection.

• Components are the basic building blocks of Angular applications.

• Modules help organize the application into cohesive blocks of functionality.

• Services are reusable code that can be injected into components.

• Directives add behavior to the DOM elements.

• Templates define the view of the application.

• Dependency inj...read more

Pipes in Angular are used to transform data before displaying it in the view.

• Pipes are used to format data in templates.

• There are built-in pipes like DatePipe, UpperCasePipe, LowerCasePipe, etc.

• Custom pipes can be created using @Pipe decorator.

• Pipes can be chained together for complex transformations.

• Example: {{ birthday | date:'dd/MM/yyyy' }} will format the birthday date.