HCLTech Web Designer and User Interface Developer Interview Questions and Answers

Dependency Injection is a design pattern used in Angular to inject dependencies into a component or service.

• It allows for easier testing and maintenance of code

• Dependencies are injected through the constructor of a component or service

• Angular has its own Dependency Injection system built-in

• Services can be shared across multiple components through Dependency Injection

Observables are streams of data that can be subscribed to, while promises are a one-time operation that returns a single value.

• Observables can emit multiple values over time, while promises only return a single value.

• Observables can be cancelled, while promises cannot.

• Observables are lazy, meaning they only execute when subscribed to, while promises execute immediately.

• Observables have operators that can transform, fil...read more

Directives are markers on a DOM element that tell AngularJS to attach a specified behavior to that DOM element.

• Directives are used to create reusable components.

• They can be used to manipulate the DOM.

• They can be used to add behavior to an existing DOM element.

• They can be used to create custom attributes.

• Examples include ng-repeat, ng-model, and ng-show.

Pure pipes are stateless and only depend on input data, while impure pipes have internal state and can have side effects.

• Pure pipes are faster and more efficient than impure pipes.

• Pure pipes are used for simple transformations of data, while impure pipes are used for more complex transformations.

• Examples of pure pipes include currency and date formatting, while examples of impure pipes include filtering and sorting.

• To ...read more

Interceptors are used to intercept HTTP requests and responses to perform transformations or error handling.

• Interceptors can be used to add headers to outgoing requests or handle errors in incoming responses.

• They can also be used to modify the request or response before it is sent or received.

• Interceptors can be global or specific to a certain request or response.

• They are useful for implementing authentication, caching...read more

RE Framework is a template for building robust and scalable automation solutions in UiPath.

• RE Framework stands for Robotic Enterprise Framework

• It provides a structured way to build automation projects with error handling, logging, and reusability

• It consists of several key components like Init, Process, End Process, and Exception Handling

• It helps in managing transactional data and handling exceptions efficiently

Yes, I have experience in PDF automation using UiPath for extracting data and automating processes.

• I have automated the extraction of data from PDF files using UiPath activities like Read PDF Text, Read PDF with OCR, etc.

• I have automated the process of filling out forms in PDF files using UiPath activities like Type Into, Click, etc.

• I have experience in handling password-protected PDF files and extracting data from the

Yes, Mainframe automation involves automating tasks on mainframe systems using RPA tools like Uipath.

• Mainframe automation involves automating tasks on mainframe systems using RPA tools like Uipath

• It requires knowledge of mainframe systems and how to interact with them using RPA

• Examples include automating data entry, file transfers, and report generation on mainframe systems

An accordion is a UI component that allows users to expand and collapse sections of content.

• An accordion typically consists of multiple sections or panels, with only one panel open at a time.

• When a panel is clicked, it expands to show its content, while the other panels collapse.

• This behavior can be achieved using JavaScript or CSS transitions.

• The logic behind an accordion involves tracking the state of each panel and ...read more

A carousel is a user interface component that displays a set of content items in a rotating manner.

• Carousels are commonly used to showcase multiple images or pieces of content in a limited space.

• They often include navigation controls to allow users to manually switch between items.

• Carousels can be implemented using HTML, CSS, and JavaScript, utilizing techniques like CSS transforms and animations.

• They can also be made ...read more