How useCallback() saved my React project from unnecessary re-renders

React just made forms less painful – meet useActionState 😎 🧠 Truth bomb: For years, every React developer has written the same 3 things for forms: useState, useEffect, and... a whole lot of tears 😅 We handled loading states, success messages, and API responses manually — basically doing the same thing every single time 🙄 💡 Now enters React 19’s superhero: useActionState 🦸♂️ It takes care of your form submissions, state updates, and loading indicators — all in just a few lines of code. No more juggling multiple hooks like: const [data, setData] = useState(); const [loading, setLoading] = useState(); const [error, setError] = useState(); Now it’s simply: const [state, action, isPending] = useActionState(yourAction, initialState); and boom 💥 — React handles the rest. 🎭 Fun fact: Before this hook, React devs were basically doing “form yoga” — trying to balance async actions, error states, and spinners in one file. 🧘♂️ Now, it’s finally one smooth flow. 🔥 When to use it? 1. Form submissions (client or server actions) 2. Async API calls 3. Handling UI states without spaghetti code 🍝 💬 Your turn: Have you tried useActionState yet? What’s the most chaotic form handling experience you’ve had in React? 😂 Drop your funniest story below 👇 #JavaScript #WebDevelopment #CodingHumor #FrontendDevelopment #TechEducation #ProgrammingFun #LearnToCode #CodeNewbie #DeveloperCommunity #100DaysOfCode

Master React Hooks with clarity and purpose I recently saw some posts explaning abut React Hooks and I would like to bring a post talking about it to remember how they work. Here some of them that I use on my dailys - useState: manage local state inside functional components. - useEffect: handle side effects like data fetching or subscriptions. - useRef: keep mutable values between renders or reference DOM elements. - useContext: share data across components without prop drilling. - useReducer: a great choice for complex state logic. - useMemo & useCallback: prevent unnecessary recalculations and re-renders. - useLayoutEffect: runs before the browser paints, useful for DOM measurements. - Advanced ones like useDebugValue or useImperativeHandle serve specific use cases. 💡 My thoughts As a full-stack developer, I’m always chasing cleaner and more scalable front-end patterns. React Hooks, when used thoughtfully, make components more modular, predictable, and performant. 🚀 Pro tip If you’re learning React or mentoring others, pick one hook per day and test it in a small component. Real experimentation beats memorization. #React #Frontend #WebDevelopment #Hooks #JavaScript #NextJS #DevTips #CleanCode

While reading the official React docs, I came across this gem — “You Might Not Need an Effect.” And trust me, this section alone can level up your React skills instantly. Most beginners (including me once 😅) tend to use useEffect() for every prop, state, or render update. But React 19 teaches a cleaner way — use Effects only when you truly step outside React’s world. 🚫 When You Don’t Need useEffect() To update derived state ➤ If a value depends on props/state, compute it directly in the render. const fullName = `${first} ${last}`; No Effect needed! To filter, map, or sort data ➤ Use memoization (useMemo) instead. const activeUsers = useMemo(() => users.filter(u => u.active), [users]); For user-triggered logic ➤ Move logic inside event handlers rather than inside Effects. const handleClick = () => setCount(c => c + 1); ✅ When You Should Use useEffect() Fetching data or connecting to APIs useEffect(() => { fetch('/api/data').then(res => res.json()).then(setData); }, []); Working with external systems — WebSocket, DOM events, localStorage Synchronizing React with non-React code — timers, animations, subscriptions 💡 Golden Rule: If your code doesn’t interact with something outside React (like the browser, API, or network), you probably don’t need useEffect(). Less useEffect = fewer bugs, faster renders, and cleaner code 💪 #React #WebDevelopment #Frontend #JavaScript #CleanCode #React19 #LearningJourney

🚀 Learning React.js – Why It’s a Game Changer for Developers Over the last few days, I’ve been diving deeper into React.js, and I finally understand why it's one of the most popular JavaScript libraries in the world. ✅ Component-based architecture makes code clean & reusable ✅ Virtual DOM boosts performance ✅ Strong ecosystem with hooks, context API, react-router & more ✅ Huge community support — you’ll never get stuck alone React isn’t just a tool — it teaches you how to think in components, manage state efficiently, and build scalable front-end architecture. 🎯 What I built recently: A small project using React: Dynamic UI with functional components State management using useState() Props for data flow Basic routing setup #ReactJS #WebDevelopment #JavaScript #Frontend #MERNStack #CodingJourney #LearningInPublic

𝙍𝙚𝙖𝙘𝙩 𝙃𝙤𝙤𝙠𝙨 𝙄 𝙒𝙞𝙨𝙝 𝙄 𝙆𝙣𝙚𝙬 𝙀𝙖𝙧𝙡𝙞𝙚𝙧 Let’s be honest, when you first start building with React, 𝘂𝘀𝗲𝗦𝘁𝗮𝘁𝗲 and 𝘂𝘀𝗲𝗘𝗳𝗳𝗲𝗰𝘁 feel like superheroes. Then you discover 𝘂𝘀𝗲𝗠𝗲𝗺𝗼 and 𝘂𝘀𝗲𝗖𝗮𝗹𝗹𝗯𝗮𝗰𝗸, and you’re like, “Yeah, I’ve cracked the React code.” Well… not quite. 😂 There are a few underrated hooks that completely changed how I write cleaner, smarter, and more efficient components. Here are 3 that deserve way more hype: 1. 𝘂𝘀𝗲𝗜𝗺𝗽𝗲𝗿𝗮𝘁𝗶𝘃𝗲𝗛𝗮𝗻𝗱𝗹𝗲: Lets you control what a parent can access from a child component. No more unnecessary prop drilling chaos. 2. 𝘂𝘀𝗲𝗟𝗮𝘆𝗼𝘂𝘁𝗘𝗳𝗳𝗲𝗰𝘁: Perfect when you need to measure or adjust the DOM before it renders on screen. No more layout flickers or surprise jumps. 3. 𝘂𝘀𝗲𝗗𝗲𝗳𝗲𝗿𝗿𝗲𝗱𝗩𝗮𝗹𝘂𝗲: Keeps your UI smooth during heavy renders. I’ve used it in large forms and search bars, and the difference was night and day. These hooks didn’t just simplify my code, they made my development flow cleaner and more enjoyable. I’ve shared a few of these experiments and mini-projects on my GitHub ( https://lnkd.in/eP9nmTEw ) if you love exploring real-world React setups. Building products that scale and perform well (no matter where in the world the team is) has become something I genuinely enjoy diving into. What about you, which React hook do you think doesn’t get enough credit? #ReactJS #FullstackDeveloper #WebDevelopment #Frontend #ReactHooks #JavaScript #CodingHumor #CleanCode #DevLife #RemoteWork #GitHub

🪝 Understanding Custom Hooks in React — Story Time A few days ago, during a lively code review, I found myself in the hot seat: “Hey Abdul, what exactly are custom hooks in React?” someone asked. I smiled and replied, “It’s a function that uses React hooks inside it.” Everyone nodded… but I could sense a few puzzled faces. On my way home, that moment stuck with me. I realized — custom hooks aren’t just a ‘function with hooks.’ They’re a game changer for cleaner, reusable React code. Here’s what I’ve learned: - Custom hooks let you share logic (like fetching data or listening to events) without copy-pasting code everywhere - Your UI components stay focused on rendering, not managing logic - One change in the hook = instant improvement across your app Now, I always ask: If I’m repeating state logic in multiple places, should this be a custom hook? It keeps our team’s code DRY, tidy, and easier to maintain! ✅ Tried-and-true uses: fetching API data, form input handling, authentication state ❌ Skip hooks for one-off logic—simplicity always wins I unpack more stories, examples, and tips in my latest Medium post. 👉 https://lnkd.in/gn_ntBJt #React #FrontendDevelopment #WebDevelopment #JavaScript #ReactJS #CustomHooks #CleanCode #DeveloperCommunity #TechTips

What a day 🫠 After spending some days with React, I finally came to understand the truth 😅. 👉 React is officially a JavaScript library, not a framework. I asked Why?🤔 Here’s the reply 👉React's main job is to handle the front part ( user interface) of a website. It doesn't directly control other things like how page change, how data is stored or how the whole project is arranged. 🤔 I asked again, So why do people like I did in my previous post think it’s a framework? Here’s the reply 👉Even though React is a library, it comes with features and patterns that makes it feel like a framework. This is because React lets you build apps using small reusable parts, it easily updates what users see when data changes and it connect extra tools like React Router and Redux. All these make it behave almost like a full framework but technically, it is still a library. 🤯 WOW! I understand now. But, what really is the meaning of LIBRARY and FRAMEWORK. Here’s what I learned:👇 LIBRARY: Gives you tools you can pick and use however you want . You control the flow of your project. FRAMEWORK: Gives you a fixed structure and controls how your project should run. It calls your code. After this knowledge, I made a little sketch to remind myself and I’m saving it here too for future reference. Learning never stops 😊 #React #JavaScript #FrontendDevelopment #WebDevelopment #CodingJourney #LearnToCode #CodeNewbie #TechLearning #CareerInTech #BuildInPublic #TechBeginners

🚀 Advanced React: Mastering Array Rendering & List Optimization As React developers, we often work with arrays and lists, but are we doing it efficiently? Here are some advanced techniques to level up your skills: ✅ 1. Always Use Unique Keys Never use array indices as keys for dynamic lists. Use unique IDs to help React optimize re-renders and avoid bugs when items are added/removed. ⚡ 2. Virtualization for Large Lists Rendering 10,000+ items? Use react-window or react-virtualized to render only visible items. This dramatically reduces DOM nodes and improves performance. 🎯 3. Map Function Best Practices The .map() method is your friend! Create dynamic UI components without repetitive code. Return JSX directly within map for cleaner code. 🔧 4. Pagination & Infinite Scroll For massive datasets, implement pagination or infinite scroll patterns. Load data in chunks as users scroll to maintain smooth performance. 💡 5. Memoization with React.memo Prevent unnecessary re-renders of list items by wrapping components with React.memo. Combine with useMemo for expensive computations. 📊 Example Pattern: const items = data.map((item) => (  <ListItem key={item.id} {...item} /> )); Remember: Performance optimization isn't premature optimization—it's smart development! #ReactJS #WebDevelopment #JavaScript #FrontendDevelopment #ReactOptimization #CodingTips #SoftwareEngineering #WebPerformance

🚀 Just built the Tic-Tac-Toe game using React (from the official docs)! This project taught me not only core React concepts but also helped me fix some tricky bugs that improved my understanding. Key Concepts I Learned 🔹 Breaking UI into reusable components (Square, Board) 🔹 Passing data & callbacks using props 🔹 Managing state with useState 🔹 Why immutability matters (slice() before updating) 🔹 Clean one-way data flow from parent → child 🔹 Writing pure helper functions like calculateWinner() 🔹 Conditional rendering for displaying game status Interesting Bugs I Fixed Along the Way 🐞 1. Wrong loop condition (lines[0].length) I mistakenly used lines[0].length instead of lines.length in the winner-checking loop. This caused the winner function to stop early and fail in some cases. Fixing it helped me understand how array-of-arrays work in JavaScript. 🐞 2. Missing <> </> fragment wrapper At one point I didn’t wrap JSX elements inside a fragment, causing compilation errors. This taught me how JSX must always return a single parent element. 🐞 3. Infinite re-render confusion I learned the difference between: ✔ passing a function → onClick={() => handleClick(0)} ✘ calling a function during render → onClick={handleClick(0)} Understanding this removed my confusion about unnecessary re-renders. Overall Takeaway This small project helped me understand how React really works: state updates trigger re-renders, JSX must be well-structured, and immutability + pure functions make the UI predictable. Excited to keep building more projects! ⚡ #react #javascript #webdevelopment #frontenddevelopment #reactjs #learninginpublic #codingjourney #softwareengineering #programming #developers #100daysofcode #projectbasedlearning #webdev

Just learned how React Hooks simplify state management! I’ve been exploring React Hooks lately, and I’m amazed by how they replace complex class components with cleaner, functional code. Here are my key takeaways: 1️⃣ useState — Perfect for managing simple, local state. No need for class constructors or this.setState(). 2️⃣ useEffect — Helps handle side effects like API calls or event listeners — super useful for cleaner, lifecycle-like logic. 3️⃣ useContext — Makes sharing state across components easy without heavy libraries like Redux. 4️⃣ Custom Hooks — Great way to reuse logic (e.g., form validation, API fetching). Before hooks, I often found myself juggling multiple lifecycle methods or passing props too deeply. Now, with hooks, my components are smaller, cleaner, and easier to test. What’s your favorite React Hook or use case? #React #JavaScript #WebDevelopment #Frontend #ReactHooks #LearningInPublic