React Quiz - 1

What is React.js?

• A database management system

• A JavaScript library

• A frontend framework

• A backend framework

What is the main goal of React?

• Developing User Interfaces

• Creating Mobile Applications

• Managing Databases

• Building Backend Services

What is the first step to start a new project using Vite?

• Run The Development Server Using npm run dev.

• Install The Dependencies

• Choose The Template

• Open Your Terminal & Run the following command – npm create vite@latest

Which hook is commonly used to manage state in a functional component in React?

• useContext

• useEffect

• useReducer

• useState

What does the useState hook return?

• Only the state variable

• Only the state updater function

• An array with a state variable and a function to update it

• A Promise resolving to a state variable

What is JSX in React?

• A new programming language

• A syntax extension of JavaScript

• A built-in library of React

• A database query language

What are "props" in React?

• A way to store local component data

• A function that returns JSX

• A mechanism for passing data from a parent to a child component

• A built-in React event handler

Why are "keys" used in React lists?

• To uniquely identify elements for efficient rendering

• To sort list items alphabetically

• To fetch data from APIs

• To apply CSS styles dynamically

React was introduced and currently maintained by

• 
• 
• 

How many elements a valid react component can return?

• At least 1

• Exactly 1

• At most 1

• Unlimited