⚛️ Learning React Hooks - useState I recently explored one of the core concepts of React — Hooks (useState) — and applied it by building a simple Counter App. Here’s what I implemented: ✔️ Managed state using useState ✔️ Built increment & decrement functionality ✔️ Added boundary conditions (0 to 20 limit) ✔️ Understood how React re-renders on state updates Code snippet: let [counter, setCounter] = useState(0); const addValue = () => { setCounter(counter + 1); }; const removeValue = () => { setCounter(counter - 1); }; 💡 This project helped me clearly understand how state works in React and why hooks are so powerful for building interactive UIs. #ReactJS #JavaScript #WebDevelopment #FrontendDevelopment #ReactHooks #LearningInPublic

I used to think I understood React… until I had to pass the same state through 3–4 components just to control one small thing 😅 It worked, but it didn’t feel right. So instead of jumping to another tutorial, I tried to actually "understand the problem" and that led me to the Context API. To keep things simple, I built a tiny “bulb toggle” app 💡 At first, everything was prop-based. Then I switched to Context… and the difference was obvious. Now: 1. I’m not passing props through unnecessary layers 2. Components feel more independent 3. The code is easier to read and reason about But I also learned something important while doing this: 👉 Context is helpful, but it’s not a replacement for everything If the state is simple and only needed in a few places, props are still totally fine. Context starts to make sense when multiple parts of your app need the same data. Still early in my journey, but this was one of those small moments where things started to click. If you’ve worked with Context before -> 👉 how do you decide between props, Context, or other state tools? #learninginpublic #reactjs #webdevelopment #javascript #frontenddevelopment

If React feels hard to you right now, You’re not the problem. You’re just missing the simple pattern behind it. Here’s what finally made it click for me: Components → Think LEGO blocks Every app you see is just small reusable pieces stacked together. JSX → Write HTML inside JavaScript It feels weird at first, until it suddenly feels like magic. Props → How components “talk” You pass data like messages from one piece to another. useState → Where the real power lives This is what makes your app interactive: clicks, updates, live changes. Here’s the part no one tells you: You don’t “learn React” all at once. You understand these 4 things, Then you build. Break. Fix. Repeat. That’s how it sticks. And honestly? React isn’t hard, it’s just unfamiliar. Once it becomes familiar, you start seeing apps differently. #React #JavaScript #FrontendDevelopment #WebDevelopment #SoftwareEngineering #TechEducation #DigitalSkills

🚀 Started learning Redux Toolkit — and built a simple Budget Tracker! To understand Redux better, I created a small project using React + Redux Toolkit. 💡 What this app does: • Add income and expense transactions • Automatically calculates total income, expense, and balance 🧠 What I learned: • How Redux store and slices work • Using useDispatch and useSelector • Managing global state in React This project helped me understand Redux concepts much more clearly. Planning to improve it further by adding more features soon! Would love your feedback 🙌 #React #Redux #FrontendDevelopment #WebDevelopment #JavaScript #LearningJourney

🚀 Built a React App Using useReducer ⚛️ I recently built a "React Quiz" app to strengthen my understanding of state management in React. 🧠 Key learnings: Managing complex state with useReducer Handling async data (loading questions from a mock API) Managing loading, error, and ready states ⚡ Answer selection & smooth navigation between questions Tracking progress 📊 Completing & restarting the quiz 🔁 Implementing a countdown timer using useEffect ⏱️ 💡 This project helped me understand when to use useReducer over useState for more structured and scalable state logic. 🔗 GitHub Repo: https://lnkd.in/g8VeyXhi Feedback is welcome 🙌 #React #JavaScript #FrontendDevelopment #WebDevelopment #ReactJS #LearningByBuilding

Your React app is slower than it needs to be. Here's how to fix it. Most devs write React the way they learned it — and never revisit it. The result? Unnecessary re-renders, bloated bundles and lists that freeze on scroll. In this carousel I cover 5 patterns I apply to every React project: → useCallback & useMemo — when to use them (and when not to) → Why state lifting is silently killing your render tree → Code splitting: route-level is the highest ROI change you can make → Virtualisation for long lists — 10,000 rows in under 5ms → The performance checklist, in priority order Save this. Your users will notice the difference. If you found this useful, follow me for weekly React & full-stack tips. What's your go-to React performance trick? Drop it in the comments #ReactJS #ReactPerformance #FrontendDevelopment #WebDevelopment #JavaScript #TypeScript #SoftwareEngineering #Programming #WebPerformance #ReactNative #TechTips #FullStackDeveloper #CodeQuality #DeveloperTips #Frontend

🎯 Have you ever felt your React app was re-rendering more than it should… and you didn’t realize it? Everything looked fine But under the hood → unnecessary UI updates were killing performance 😵💫 Then I learned this 👇 👉 React doesn’t care if your UI “looks same” 👉 If state/props change → it re-renders 💡 The real problem: Global state (like Context API) → triggers re-renders everywhere Components update even when their data didn’t change This is the core issue behind unnecessary UI updates 🧠 What helped me fix it: ⚡ Context Splitting → Break global state into smaller pieces 🎯 Selectors → Subscribe only to specific state (not entire context) 🧩 Memoization → Use React.memo, useMemo, useCallback to avoid useless recalculations 🔥 The mindset shift: 👉 “Not every re-render is bad… but unnecessary ones are expensive.” Since understanding this: My UI feels smoother Debugging became easier I started thinking like a performance-focused developer If you're working with React, this is something you can’t ignore. 💬 Have you ever faced unnecessary re-renders in your app? #ReactJS #FrontendDevelopment #WebPerformance #JavaScript #Coding

💡 How would you design a real-time notifications system in a frontend app? Here’s a practical approach I like to follow. I separate communication into two layers: 🔹 REST APIs for CRUD operations 🔹 WebSockets for real-time updates On the frontend, I create a WebSocket service that: • Maintains the connection • Handles reconnection logic • Parses incoming messages To keep things scalable and decoupled, I use a pub/sub (event-based) system. Components subscribe to specific notification types, so updates flow efficiently without tight coupling. For state management, notifications live in a centralized store or data-fetching layer—ensuring consistency across the app. ⚡ Performance matters: • Batch updates when needed • Avoid unnecessary re-renders (memoization) • Limit rendered items (virtualization or pagination) And of course, don’t forget the edge cases: 🔸 Connection loss 🔸 Duplicate messages 🔸 Message ordering Clean architecture + resilience = a smooth real-time experience. How would you approach this? #FrontendDevelopment #WebDevelopment #SoftwareArchitecture #RealTimeSystems #WebSockets #JavaScript #ReactJS #SystemDesign #Programming #TechEngineering

I almost shipped a slow React app. Not broken. Not buggy. Just… slow. Everything worked. But something felt off — clicks felt delayed, UI had that subtle lag that users notice even if they can't explain it. I opened React DevTools Profiler and what I saw genuinely surprised me. One small interaction was triggering re-renders across components that had absolutely nothing to do with it. Functions being recreated on every render. Child components updating for no reason. I wasn't writing bad code. I just didn't understand what React was actually doing under the hood. Three things that changed everything for me: React.memo — child components stopped re-rendering unless their props actually changed useCallback — function references stayed stable between renders instead of being recreated every time useMemo — expensive calculations stopped running on every single render The difference was immediate. The app felt alive in a way it didn't before. No library. No major refactor. Just understanding how React works and using the tools it already gives you. If your React app feels sluggish and you haven't opened the Profiler yet — that's your next 30 minutes sorted. #ReactJS #Frontend #JavaScript #WebDevelopment #Programming

𝗦𝘁𝗼𝗽 𝗹𝗲𝘁𝘁𝗶𝗻𝗴 𝗺𝗲𝗺𝗼𝗿𝘆 𝗹𝗲𝗮𝗸𝘀 𝗱𝗿𝗮𝗶𝗻 𝘆𝗼𝘂𝗿 𝗮𝗽𝗽’𝘀 𝗽𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲 🚀 Your app doesn’t become slow overnight. It starts small… A little extra memory here. A listener you forgot there. Then suddenly scroll lag, UI freezes, crashes. That’s a memory leak. Not complex. Just ignored. Here’s where you’re probably messing up 👇 1️⃣ 𝗬𝗼𝘂 𝗰𝗿𝗲𝗮𝘁𝗲𝗱 𝗮 𝘃𝗮𝗿𝗶𝗮𝗯𝗹𝗲... 𝗯𝘂𝘁 𝗻𝗲𝘃𝗲𝗿 𝗿𝗲𝗮𝗹𝗹𝘆 𝗹𝗲𝘁 𝗶𝘁 𝗴𝗼 → Accidental globals stay forever Fix: Use `let` / `const` + strict mode 2️⃣ 𝗬𝗼𝘂𝗿 𝗰𝗼𝗱𝗲 𝗶𝘀 𝘀𝘁𝗶𝗹𝗹 𝗿𝘂𝗻𝗻𝗶𝗻𝗴... 𝗲𝘃𝗲𝗻 𝘄𝗵𝗲𝗻 𝗨𝗜 𝗶𝘀 𝗴𝗼𝗻𝗲 → Timers & event listeners don’t stop themselves Fix: `clearInterval()` and `removeEventListener()` 3️⃣ 𝗬𝗼𝘂 𝗰𝗮𝗽𝘁𝘂𝗿𝗲𝗱 𝗺𝗼𝗿𝗲 𝘁𝗵𝗮𝗻 𝘆𝗼𝘂 𝗻𝗲𝗲𝗱𝗲𝗱 → Closures holding large objects hostage Fix: Only keep what you actually use 4️⃣ 𝗬𝗼𝘂 “𝗿𝗲𝗺𝗼𝘃𝗲𝗱” 𝗨𝗜... 𝗯𝘂𝘁 𝗻𝗼𝘁 𝗳𝗿𝗼𝗺 𝗺𝗲𝗺𝗼𝗿𝘆 → Detached DOM nodes still referenced Fix: Set unused references to `null` #WebDevelopment #JavaScript #ReactJS #Coding #FrontendDevelopment #WebPerformance