What are the React component lifecycle methods?

Question

Accepted Answer

React lifecycle methods are hooks that allow developers to run code at specific points in a component's lifecycle.

componentDidMount: Invoked immediately after a component is mounted. Ideal for API calls.
componentDidUpdate: Invoked immediately after updating occurs. Useful for responding to prop or state changes.
componentWillUnmount: Invoked immediately before a component is unmounted and destroyed. Good for cleanup tasks.
shouldComponentUpdate: Allows you to control whether a component should re-render based on changes in state or props.
getDerivedStateFromProps: Invoked right before rendering, both on the initial mount and on subsequent updates.

Interview Questions from Popular Companies