Infosys Technology Analyst Interview Questions, Process, and Tips

Closures are functions that have access to variables from their containing scope even after the parent function has finished executing.

• Closures allow functions to maintain access to variables from their parent scope

• They are created when a function is defined within another function

• Closures are commonly used in event handlers and callbacks

The life cycle methods in React are special methods that allow you to perform actions at specific points in the component's life cycle.

• componentDidMount() is called after the component has been rendered to the DOM

• componentDidUpdate() is called after the component's updates are flushed to the DOM

• componentWillUnmount() is called before the component is removed from the DOM

Roles in project involve defining responsibilities and tasks for team members to ensure successful completion.

• Identifying key stakeholders and their roles

• Assigning tasks and responsibilities to team members

• Ensuring clear communication and collaboration among team members

• Monitoring progress and addressing any issues or roadblocks

• Adapting roles as needed based on project requirements

Regression testing is important to ensure that new code changes do not negatively impact existing functionality.

• Ensures that new code changes do not introduce bugs or issues in existing functionality

• Helps maintain the overall quality and stability of the software

• Saves time and resources by catching issues early in the development process

• Can be automated to streamline the testing process

• Examples: running regression test...read more

RxJS is a library for reactive programming using Observables. Map is an operator used to transform the items emitted by an Observable.

• RxJS is a library for reactive programming in JavaScript.

• It allows you to work with asynchronous data streams.

• Map is an operator in RxJS used to transform the items emitted by an Observable.

• Example: observable.pipe(map(data => data * 2)) will double each emitted value.