반응형 reacttutorial2 A Practical Guide to useMemo in React 19 1. Introduction In React development, you’ll often encounter expensive computations or large data transformations that can slow down performance if re-run on every render. useMemo is a powerful React Hook that caches (memoizes) the result of these computations, ensuring they only re-run when necessary. In React 19, useMemo remains an important tool for optimizing rendering and improving user exp.. 2025. 3. 8. A Practical Guide to useEffect in React 19 1. Introduction useEffect is one of the most commonly used hooks in React, enabling you to handle side effects—such as data fetching, subscribing to events, or updating the DOM—directly within functional components. While its core usage remains largely the same as previous React versions, React 19 continues to refine how developers approach side effects and concurrency, making it worth revisitin.. 2025. 3. 8. 이전 1 다음 반응형
