Available Questions About React Js Quizzes
1. What is the purpose of React’s useState hook?
To perform side effects in functional components
To manage local state in functional components
To create class components
To manage global state across the application
2. How do you pass data from a parent component to a child component in React?
By using props
By using state
By using context
By using refs
3. What is a key benefit of using React’s virtual DOM?
It improves performance by minimizing direct DOM manipulations
It simplifies state management
It allows for server-side rendering
It automatically handles routing
4. How do you handle side effects in a functional component?
By using the componentDidMount lifecycle method
By using the useReducer hook
By using the useContext hook
By using the useEffect hook
5. What is the purpose of React’s useContext hook?
To perform side effects in functional components
To handle component lifecycle methods
To access context values within functional components
To manage component local state
6. How do you create a React component that maintains its own local state?
By using a class component with this.state and this.setState()
By using the useState hook in a functional component
By using the useReducer hook
By using the context API
7. What is the purpose of React’s useRef hook?
To handle context values
To perform side effects
To access and interact with DOM elements
To manage state within functional components
8. How do you conditionally render components in React?
By using componentDidUpdate
By using ternary operators or conditional statements within JSX
By using the useEffect hook
By using the useReducer hook
9. How do you update the state of a functional component in React?
By using the setState method
By using the useState hook’s updater function
By modifying the state directly
By using the useEffect hook
10. How do you handle errors in React components?
By using the componentDidCatch lifecycle method
By using try...catch blocks
By using error boundaries
By using the useEffect hook