Why do we use useMemo?
The primary purpose of `useMemo` is to optimize performance by avoiding redundant computations. When a component re-renders, any expressions within it, including function calls, are re-evaluated. If a function call involves expensive computations that don’t need to be recalculated on every render, using `useMemo` can significantly improve performance by memoizing the result and only recomputing it when dependencies change.
How to use useMemo Hook in a Functional Component in React ?
In React development, optimizing performance is crucial for delivering responsive and fast user experiences. One way to achieve this is by using the `useMemo` hook.
In this article, we’ll explore what `useMemo` is, why it’s beneficial, and how to use it effectively in functional components.
Table of Content
- What is React useMemo?
- Why do we use useMemo?
- React useMemo: How to Cache the Value of Expensive Utilities
- Conclusion: