useEffect vs useLayoutEffect: When to use each in React

useEffect vs useLayoutEffect — the difference that actually matters! Most devs use useEffect for everything, but here’s what’s happening under the hood 👇 useEffect: Runs after the paint (i.e., after the screen updates). ✅ Great for API calls, event listeners, or logging. 🚫 Avoid for DOM measurements or layout changes — you’ll see a flicker. useLayoutEffect: Runs before the paint (right after DOM mutations but before the browser updates the screen). ✅ Perfect for reading layout, measuring elements, or synchronizing animations. 🚫 Avoid overusing it — it can block rendering and hurt performance. 💡 Quick rule: If it affects what you see → use useLayoutEffect If it affects after you see → use useEffect 💬 What’s your go-to use case for useLayoutEffect? Let’s make this a mini thread of learnings 👇 #ReactJS #FrontendDevelopment #WebDevelopment #useEffect #CodingTips #JavaScript #LearnInPublic

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