What is the correct way to initialize the state of a React component? Mark as favorite Copy Link Answer the question in 30 seconds! state = { data: null } this.state = { data: null } this.setState({ data: null }) None of the above Check Answer
What is the setState() method used for in React? Mark as favorite Copy Link Answer the question in 30 seconds! To update the component's state and trigger a re-render of the component To add a new property to the component's state To remove a property from the component's state To replace the component's state with a new object Check Answer
What is the purpose of the state in a React component? Mark as favorite Copy Link Answer the question in 30 seconds! To store data that can be changed and affect the rendering of the component To store data that should never be changed To store data that is only used in the component's constructor To store data that is shared between different components Check Answer
What is the main difference between a functional and a class component in React? Mark as favorite Copy Link Answer the question in 30 seconds! Functional components are written in JavaScript, while class components are written in JSX Functional components don't have state, while class components do Functional components can be used in all parts of a React application, while class components are only used for complex UI components There is no difference between functional and class components Check Answer
What is JSX? Mark as favorite Copy Link Answer the question in 30 seconds! A JavaScript library for building user interfaces A syntax extension for JavaScript A CSS preprocessor A testing framework for React Check Answer
What is a React component? Mark as favorite Copy Link Answer the question in 30 seconds! A JavaScript Function A HTML element A CSS class A React-specific HTML tag Check Answer