The useMemo Hook
Explore how to use the useMemo Hook in React to optimize component performance by memoizing expensive calculations. Learn when and how to apply useMemo to prevent unnecessary re-renders, and practice enhancing app efficiency with practical exercises involving filtering, fibonacci calculations, and salary processing.
In modern React applications, optimizing performance is crucial to ensure smooth and efficient user experiences. One common issue is unnecessary computations that can slow down the app. This is where the useMemo Hook becomes very valuable.
Understanding useMemo
The useMemo Hook is used to optimize the performance of our application by memoizing the result of a computation. It returns a memoized value that only recalculates when one of its dependencies changes. This avoids unnecessary recalculations on every render, making our application more efficient.
Minimizing rendering overheads
Let's see how a React component behaves with and without the useMemo Hook. ...