Mastering React Lifecycle with useEffect

🚀 Day 1 of Building React Projects Today I built and deployed a Todo List Application using React.js. This project helped me practice React fundamentals like state management and component-based UI development. ✨ Features: • Add new tasks • Filter tasks (All / Completed / Pending) • Clean and simple UI • Dynamic task updates 🛠 Tech Stack: React.js JavaScript HTML CSS 🌐 Live Demo: https://lnkd.in/dDAU9E7r 💻 Source Code: https://lnkd.in/dup-W67U I’ll be building and sharing more React projects daily as part of my learning journey. #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment #ReactProjects #LearningInPublic

🚀 Understanding React.useEffect Hook — Simplified! If you're working with React, mastering useEffect is not optional — it’s essential. This single hook controls how your app interacts with the outside world 💡 What is useEffect? It’s a built-in hook that runs after your component renders, helping you manage side effects like: 🔹 API calls 🔹 Event listeners 🔹 Timers 🔹 DOM updates ⚙️ How it works 1️⃣ Runs after initial render 2️⃣ Re-runs when dependencies change 3️⃣ Cleans up before next run or unmount 🧠 Real-world use cases ✔ Fetching data from APIs ✔ Handling WebSocket subscriptions ✔ Managing intervals & timeouts ✔ Updating page title dynamically 🔥 Best Practices (Most developers miss this!) ✅ Always use dependency array correctly ✅ Include all dependencies (avoid bugs) ✅ Cleanup side effects to prevent memory leaks ✅ Split logic into multiple useEffects ❌ Don’t overuse useEffect unnecessarily 💬 Pro Insight: A clean useEffect = Better performance + Fewer bugs + Scalable code 📌 Save this post & follow for more practical frontend insights! #ReactJS #useEffect #FrontendDevelopment #JavaScript #WebDevelopment #ReactHooks #CodingTips #SoftwareEngineering #FrontendEngineer #FullStackDeveloper #LearnReact #100DaysOfCode 🚀

🚀 Day 4 of Building React Projects Today I built a Background Changer Application using React.js. This project allows users to change the background color of the webpage dynamically with a single click. ✨ Features: • Change background color instantly • Interactive buttons for different colors • Simple and clean UI 🛠 Tech Stack: React.js JavaScript HTML CSS 🌐 Live Demo: https://lnkd.in/daCYux9G 💻 Source Code: https://lnkd.in/dEJDyd9G #ReactJS #JavaScript #FrontendDevelopment #WebDevelopment #LearningInPublic

🚀 Built a Password Generator using React Hooks I recently worked on a project where I built a fully functional Password Generator using React. This project helped me deepen my understanding of core React concepts and improve my problem-solving skills. 🔧 What I implemented: • Dynamic password generation based on user preferences • Copy-to-clipboard functionality for better user experience • Responsive and clean UI 📚 Key concepts I learned and applied: • useCallback() – to optimize performance and avoid unnecessary re-renders • useRef() – to directly interact with DOM elements • useEffect() – to handle side effects and keep data in sync 💡 This project gave me a clearer understanding of how React hooks work together in real-world applications. Looking forward to building more such projects and improving my frontend development skills! #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment #CodingJourney #100DaysOfCode

Most developers think React components only re-render when props change. I used to believe the same — until I learned something surprising. A component re-renders whenever its parent re-renders, even if the props stay exactly the same. That means a small state update in a parent component can trigger multiple unnecessary renders in child components. One simple optimization that helped me: Using React.memo to prevent unnecessary re-renders. It’s a small change, but in large applications it can improve performance significantly. Still exploring more about how React’s rendering works under the hood. Curious — what’s one React concept that took you a long time to fully understand? #ReactJS #FrontendDevelopment #WebDevelopment #JavaScript #SoftwareEngineering

Day 15 #100DaysOfCode 💻 Today I learned how to set up React in VS Code and understood the basic idea of React Components. First, I installed React using Vite and ran the project in VS Code. Then I learned that in React, a function can act as a component and can be used like an HTML tag. Example: function Header() { return <h1>Hello React</h1>; } function App() { return ( <div> <Header /> </div> ); } This means React allows us to build reusable UI pieces using functions. Small step, but an important start in my React journey 🚀 #ReactJS #JavaScript #WebDevelopment #FrontendDevelopment #CodingJourney #Akbiplob

🚀 Day 6 of Building React Projects Today I built a Notes Application using React.js. This project allows users to create, edit, and delete notes while saving the data in the browser using LocalStorage. ✨ Features: • Add new notes • Edit existing notes • Delete notes • Save notes in LocalStorage • Simple and responsive UI 🛠 Tech Stack: React.js JavaScript HTML CSS 🌐 Live Demo: https://lnkd.in/dVWH9WBf 💻 Source Code: https://lnkd.in/ddGADSFQ #ReactJS #JavaScript #FrontendDevelopment #WebDevelopment #LearningInPublic

🚀 useEffect vs useLayoutEffect — One Small Difference, Big Impact! As a React developer, I used to think both hooks were almost the same… until I understood when they run 👇 🔹 useEffect Runs after the browser paints the UI 👉 Non-blocking → Better for performance Perfect for: ✅ API calls ✅ Event listeners ✅ Logging 🔹 useLayoutEffect Runs before the browser paints the UI 👉 Blocking → Can affect performance Used for: ✅ DOM measurements ✅ Layout adjustments ✅ Preventing UI flicker ⚡ The Key Difference: Timing 👉 useLayoutEffect runs first 👉 useEffect runs after paint 💡 Golden Rule Always use useEffect unless you specifically need to measure or modify the DOM before it renders. Understanding this small difference can help you avoid performance issues and UI glitches 👀 💬 Have you ever faced flickering issues or layout bugs in React? #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment #ReactHooks #LearningInPublic

🚀 React Fiber vs Stack Reconciliation — Why React Rewrote Its Core Most developers use React daily, but few understand what happens under the hood ⚙️ 🧠 1. Old React Algorithm (Stack Reconciliation) Before React 16, React used a stack-based reconciliation algorithm. 🔹 How it worked: React recursively walked the virtual DOM tree Used call stack (JavaScript execution stack) Updates were processed synchronously (blocking) React Fiber completely changed how rendering works by introducing: ✅ Interruptible rendering ✅ Prioritized updates ✅ Better performance in large-scale apps If you're preparing for frontend interviews or want to write better React apps, understanding Fiber is a MUST 🔥 #ReactJS #FrontendDevelopment #WebDevelopment #JavaScript #ReactFiber #CodingInterview #SoftwareEngineering #ReactInternals #PerformanceOptimization #TechDeepDive

💡 React useEffect – Small Syntax, Big Impact useEffect is one of the most powerful hooks in React, but subtle changes can completely change your app's behavior: 🔹 useEffect(() => {}) Runs after every render – use when you need something to happen continuously. 🔹 useEffect(() => {}, []) Runs only once on mount – perfect for initializing data or fetching APIs. 🔹 useEffect(() => {}, [state]) Runs only when state changes – ideal for reacting to specific updates without extra renders. ⚡ Small dependency tweaks → big differences in performance and behavior. Mastering useEffect = fewer bugs ✅ cleaner code ✅ faster apps 🚀 #ReactJS #FrontendDevelopment #JavaScript #WebDev #CodingTips #ReactHooks