Where to “useCallback” Hook
The “useCallback” hook should generally be used in scenarios where you need to memorize callback functions to optimize performance and prevent unnecessary re-renders of components. I have explained some use case of “useCallback” Hook in React.
- Passing Callback to Child Components: When you passing callback props to child components, It’s often a good idea to use “useCallback” Hook to memorize those callbacks. This will ensures that child components only re-renders when necessary, improving performance.
- Event Handlers: If you are passing event handelrs to event listeners ( such as “onClick”, “onChange” etc), using ‘useCallback” can optimize performance by preventing unnecessary function recreations.
- Preventing Unwanted Effects in useEffect: When using the useEffect hook, you might need to pass a callback function as a dependency. In such cases, using useCallback can prevent unintended effects caused by the recreation of the callback function.
Benefits of using useCallback Hook in React
The “useCallback” is a React Hook for optimizing performance in React functional components. “useCallback” can be utilized to enhance the performance of React applications by memorizing the callback function and minimizing unnecessary re-renders of components.