"Mastering useEffect in React for side effects"

Ever changed a tiny prop in React and watched your whole useEffect restart like it hit the reset button? That’s exactly what React 19.2 just fixed with a new hook called useEffectEvent. The Old Problem Let’s say you have a timer that says hello to a user every few seconds: useEffect(() => {  const timer = setInterval(() => {   alert(`Hello ${username}`);  }, 3000);  return () => clearInterval(timer); }, [username]); Now every time the username changes, React clears and restarts the timer even though the timer itself didn’t need to restart. You only wanted the alert to show the latest name, not rebuild the whole effect. If you remove [username] from dependencies, the timer won’t restart but now it’s stuck with the old name. Classic React dilemma. 😅 The Fix useEffectEvent React 19.2 introduces a new hook that solves this perfectly: const sayHello = useEffectEvent(() => {  alert(`Hello ${username}`); }); useEffect(() => {  const timer = setInterval(() => {   sayHello();  }, 3000);  return () => clearInterval(timer); }, []); • The timer runs once. • The message always uses the latest username. • No more stale values or unnecessary effect restarts. In Simple Words useEffectEvent separates “what happens once” from “what changes often.” It keeps your side effects stable, while keeping your logic fresh. Why It Matters • No more lint-rule fights. • No more unnecessary reconnects, resets, or stale closures. • Just cleaner, smarter effects exactly how React intended them. #React19 #useEffectEvent #ReactHooks #FrontendDevelopment #JavaScript #WebDevelopment #ReactJS #CodingTips #DevCommunity #ReactUpdates

What is useState in React? If you’re learning React, useState is one of the first hooks you’ll use! It allows your component to “remember” and update data — like counting clicks, toggling themes, or handling form inputs. It’s a simple yet powerful tool that makes your UI dynamic and interactive. Example: When you click a button, useState updates the count and React automatically re-renders your component with the new value! #ReactJS #useState #FrontendDevelopment #JavaScript #MERNStack #WebDevelopment #LearningReact

🚀 Next.js 16 is out! https://lnkd.in/eEMFSvwh This release brings major improvements in performance, build speed, and developer experience — with highlights like Turbopack by default, smarter caching, and enhanced routing. 👉 Stay updated with the latest Next.js, React.js, and Frontend development news, tutorials, and videos: https://t.me/reactnexthub #NextJS #ReactJS #Frontend #WebDevelopment #JavaScript #Vercel

🧩 Today I built a small but powerful custom React hook: useDocumentReadyState() It lets you detect when the document is fully loaded, something that’s surprisingly useful in modern apps like Next.js or PWAs. 🔍 Here’s what it does: • Tracks if the document is ready using useState • Listens to the readystatechange event • Cleans up automatically when unmounted 💡 Use cases: • Running code safely after the DOM is ready • Avoiding hydration issues in Next.js • Displaying loaders or initializing animations only when needed It’s simple, efficient, and helps keep things clean in client-side logic. Curious to hear — how do you usually handle “DOM ready” states in your projects? 👇 #React #NextJS #WebDev #PWA #Frontend #DevTips #JavaScript

Ever feel like your React components are getting too cluttered with state and effects? Enter **React’s useReducer hook** — the unsung hero for managing complex state logic! 🎉 Instead of juggling multiple useState calls, useReducer lets you centralize your state updates in one place, making your code cleaner and easier to debug. It works just like Redux but right inside your component without extra setup! Pro tip: Combine useReducer with Context API for scalable and maintainable state management in medium to large apps. Your future self will thank you 😉 Ready to simplify your state? Try it out and watch your React skills level up! #ReactJS #ReactHooks #WebDevelopment #JavaScript #Frontend #CodingTips #DevCommunity

React portals are powerful for rendering elements outside the normal DOM tree — but they also reveal some interesting behavior around visibility. I recently noticed that React’s <Activity> component hides only direct portal children, not nested ones buried under other elements. So, while first-level portals respect visibility changes, deeper ones remain active — leading to subtle inconsistencies in complex UIs. It’s a small but telling example of how React’s rendering model handles ownership and visibility. React tracks portals by direct relationships, not full hierarchy — which makes perfect sense once you think about how reconciliation works under the hood. #React #FrontendEngineering #JavaScript #WebDevelopment #ReactInternals #Portals #softwaredeveloper #softwareengineer #mern #nodejs

A recent realization while building with Next.js — I initially went with Static Site Generation (SSG) thinking it would be a perfect mix of performance and simplicity. But once I introduced dynamic routes like "[id]", I hit the limits of static export pretty quickly. That’s when it clicked — static export and dynamic behavior just don’t mix well. Next.js shines when it has a server to lean on — for data fetching, incremental builds, or API routes. But if you’re deploying purely static files, something like Vite + React Router might be a better fit. Not really a mistake — more of a reminder: Always choose your framework based on how and where you plan to host. These small realizations shape your intuition over time — and honestly, that’s the best part of building things. 🚀 #Nextjs #Reactjs #WebDevelopment #Frontend #JavaScript #LearningByBuilding #DeveloperJourney #Vite #StaticSiteGeneration #DevThoughts

React Tip: If you’re using useEffect just to update a state when another state changes — pause for a second. That’s often a signal you might be duplicating state unnecessarily. Example: useEffect(() => { setFiltered(users.filter(u => u.active)) }, [users]) Instead, derive it directly in render: const filtered = users.filter(u => u.active) Derived data > duplicated data. It keeps your component cleaner, more predictable, and easier to debug. Have you caught yourself doing this before? #React #ReactJS #WebDevelopment #Frontend #JavaScript #ReactHooks #useEffect #CleanCode #ProgrammingTips #DevCommunity

🧠 Stop Unnecessary Re-renders in React (with Real Examples) Ever wrapped a component in React.memo — and it still re-renders? 😩 You’re not alone! The culprit is often inline functions or objects 👇 React compares props by reference, not by value. Inline functions/objects = new reference = re-render. Keep your components memoized — and your app smooth ⚡ #React #ReactJS #FrontendDevelopment #WebDevelopment #JavaScript #ReactPerformance #PerformanceOptimization #ReactMemo #useCallback #useMemo #FrontendEngineer #CodingTips #LearnReact

A Simple Guide to React’s 𝐮𝐬𝐞𝐄𝐟𝐟𝐞𝐜𝐭 Hook --> 𝐄𝐯𝐞𝐫 𝐰𝐨𝐧𝐝𝐞𝐫𝐞𝐝 𝐰𝐡𝐚𝐭 exactly 𝐮𝐬𝐞𝐄𝐟𝐟𝐞𝐜𝐭 does and why it’s so important? 𝐖𝐡𝐚𝐭 𝐢𝐬 𝐮𝐬𝐞𝐄𝐟𝐟𝐞𝐜𝐭? useEffect is a React Hook that lets you perform side effects in functional components — like fetching data, updating the DOM, or setting up event listeners. In simple words: it tells React to “𝐝𝐨 𝐬𝐨𝐦𝐞𝐭𝐡𝐢𝐧𝐠 𝐚𝐟𝐭𝐞𝐫 𝐫𝐞𝐧𝐝𝐞𝐫𝐢𝐧𝐠.” 𝐖𝐡𝐲 𝐝𝐨 𝐰𝐞 𝐮𝐬𝐞 𝐮𝐬𝐞𝐄𝐟𝐟𝐞𝐜𝐭? Because not everything in React is about 𝐫𝐞𝐧𝐝𝐞𝐫𝐢𝐧𝐠 𝐭𝐡𝐞 𝐔𝐈. Sometimes, your app needs to interact with the outside world — 𝐀𝐏𝐈𝐬, 𝐬𝐭𝐨𝐫𝐚𝐠𝐞, 𝐨𝐫 𝐞𝐯𝐞𝐧 𝐛𝐫𝐨𝐰𝐬𝐞𝐫 𝐞𝐯𝐞𝐧𝐭𝐬. useEffect helps you run that code after the component renders, without breaking the React flow. 𝐓𝐡𝐞 𝐏𝐨𝐰𝐞𝐫 𝐨𝐟 𝐮𝐬𝐞𝐄𝐟𝐟𝐞𝐜𝐭? It gives you full control over 𝐰𝐡𝐞𝐧 𝐚𝐧𝐝 𝐡𝐨𝐰 𝐨𝐟𝐭𝐞𝐧 𝐲𝐨𝐮𝐫 𝐞𝐟𝐟𝐞𝐜𝐭 𝐫𝐮𝐧𝐬. With the dependency array, you can decide: [ ] → run once [data] → run when data changes (no array) → run on every render Clean, predictable, and no infinite loops Follow [Akash Tolanur] for more such react contents #React #ReactJS #javaScript #frontend #WebDevelopment #ReactHooks