Ignitiv Technologies Interview Questions and Answers

Functional components are stateless and use functional programming concepts, while class components are stateful and use object-oriented programming concepts.

• Functional components are written as functions, while class components are written as classes.

• Functional components do not have their own state, while class components can have state.

• Functional components are simpler and easier to understand, while class component...read more

To fetch data from backend in JS and React JS, use fetch() or axios() API.

• Use fetch() or axios() API to make HTTP requests to the backend server

• Pass the URL of the backend API endpoint as an argument to fetch() or axios()

• Handle the response from the backend using .then() or async/await

• Parse the response data using JSON.parse()

• Update the state of the React component with the fetched data