In React, what is the purpose of the defaultProps property on a component? React DeveloperMedium Try Now
What is the difference between React state and a regular JavaScript variable inside a functional component? React DeveloperMedium Try Now
What is an Error Boundary in React and which lifecycle method is central to its implementation? React DeveloperMedium Try Now
How does React’s reconciliation algorithm determine whether to update or replace a DOM element? React DeveloperMedium Try Now
What is the difference between useEffect with an empty dependency array [] and useEffect with no dependency array at all? React DeveloperMedium Try Now
What is the purpose of the React key prop when reconciling lists, and why is using array index as a key considered problematic? React DeveloperMedium Try Now
What is the useReducer hook and when would you prefer it over useState? React DeveloperMedium Try Now