🚀 Understanding Event Handling in React — Simplified! In React, user interactions drive everything. 👉 Clicking a button 👉 Typing in input 👉 Submitting a form All of this is handled through events. 💡 What is Event Handling in React? Event handling allows you to respond to user actions using functions. <button onClick={handleClick}>Click Me</button> 👉 When clicked → handleClick runs ⚙️ How it works function App() { const handleClick = () => { console.log("Button clicked!"); }; return <button onClick={handleClick}>Click</button>; } ✅ Pass function reference (not function call) ✅ React handles binding automatically 🧠 Key Differences from HTML 🔹 HTML: <button onclick="handleClick()">Click</button> 🔹 React: <button onClick={handleClick}>Click</button> 👉 CamelCase events 👉 Pass functions, not strings 🧩 Common Events in React ✔ onClick → Button click ✔ onChange → Input change ✔ onSubmit → Form submit ✔ onMouseEnter / onMouseLeave ✔ onKeyDown / onKeyUp 🔥 Best Practices (Most developers miss this!) ✅ Always pass function reference ✅ Use arrow functions when needed ✅ Keep handlers clean and reusable ❌ Don’t call function directly in JSX ⚠️ Common Mistake // ❌ Wrong <button onClick={handleClick()}> 👉 This runs immediately instead of on click 💬 Pro Insight React uses a Synthetic Event system: 👉 Normalizes events across all browsers 👉 Improves performance and consistency 📌 Save this post & follow for more deep frontend insights! 📅 Day 9/100 #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment #ReactHooks #SoftwareEngineering #100DaysOfCode 🚀

🚀 Understanding useMemo vs useCallback in React — Simplified! If you're optimizing React performance, you've probably seen: 👉 useMemo 👉 useCallback They look similar… but solve different problems. 💡 What is useMemo? 👉 Memoizes a value const result = useMemo(() => { return expensiveCalculation(data); }, [data]); ✅ Recomputes only when dependencies change ✅ Avoids expensive recalculations 💡 What is useCallback? 👉 Memoizes a function const handleClick = useCallback(() => { console.log("Clicked"); }, []); ✅ Keeps function reference stable ✅ Prevents unnecessary re-renders ⚙️ Key Difference 🔹 useMemo → returns a value 🔹 useCallback → returns a function 👉 Think of it like: useMemo → “cache result” useCallback → “cache function” 🧠 Why it matters React re-renders can cause: Expensive calculations New function references Unnecessary child re-renders 👉 These hooks help optimize that 🧩 Real-world use cases ✔ useMemo: Heavy calculations Filtering/sorting large data ✔ useCallback: Passing functions to child components Preventing re-renders with React.memo 🔥 Best Practices (Most developers miss this!) ✅ Use only when needed (not everywhere) ✅ Combine with React.memo for optimization ✅ Keep dependencies accurate ❌ Don’t overuse (can hurt performance) ⚠️ Common Mistake // ❌ Overusing memoization const value = useMemo(() => count + 1, [count]); 👉 Not needed for simple calculations 💬 Pro Insight 👉 useMemo = Optimize computation 👉 useCallback = Optimize re-renders 📌 Save this post & follow for more deep frontend insights! 📅 Day 15/100 #ReactJS #FrontendDevelopment #JavaScript #ReactHooks #PerformanceOptimization #SoftwareEngineering #100DaysOfCode 🚀

After working on state, routing, and UI in earlier projects, I wanted to build something that depends on external data and real-time updates 🌍 Built a Weather App where you can search any city and get current conditions in a clean, responsive UI 🌦️ What this added for me 1. Working with API data instead of static state 2. Handling loading and error states properly 3. Keeping the UI clear even when data changes dynamically 📱 Stack: React, Vite, Tailwind CSS, Vercel 🔗 Live: https://lnkd.in/gZGcnUFS 💻 Code: https://lnkd.in/gasfj-vK Still building and improving, open to feedback or connections 👍 #React #JavaScript #FrontendDevelopment #WebDevelopment #BuildInPublic #LearningInPublic #API #Vite #TailwindCSS #DevCommunity #TechCareers #SoftwareDevelopment Error Makes Clever

🚀 Understanding useRef in React — Simplified! Not all data in React should trigger a re-render. 👉 That’s where useRef becomes powerful. 💡 What is useRef? useRef is a hook that lets you store a mutable value that persists across renders—without causing re-renders. ⚙️ Basic Syntax const ref = useRef(initialValue); 👉 Access value using: ref.current 🧠 How it works Value persists across renders Updating it does NOT trigger re-render Works like a mutable container 🔹 Example const countRef = useRef(0); const handleClick = () => { countRef.current += 1; console.log(countRef.current); }; 👉 UI won’t update—but value persists 🧩 Real-world use cases ✔ Accessing DOM elements (focus, scroll) ✔ Storing previous values ✔ Managing timers / intervals ✔ Avoiding unnecessary re-renders 🔥 Best Practices (Most developers miss this!) ✅ Use useRef for non-UI data ✅ Use it for DOM access ✅ Combine with useEffect when needed ❌ Don’t use useRef for UI state ❌ Don’t expect UI updates from it ⚠️ Common Mistake // ❌ Expecting UI update countRef.current += 1; 👉 React won’t re-render 💬 Pro Insight 👉 useRef = Persist value without re-render 👉 useState = Persist value with re-render 📌 Save this post & follow for more deep frontend insights! 📅 Day 14/100 #ReactJS #FrontendDevelopment #JavaScript #ReactHooks #useRef #WebDevelopment #SoftwareEngineering #100DaysOfCode 🚀

I Just built and deployed a Weather App 🌤️ This project helped me understand how to work with APIs and handle real-time data using JavaScript… Features include: • Search weather by city • Real-time temperature and conditions • Weather icons • Clean and responsive UI (though basic) Try it here: 👉 https://lnkd.in/ea_SveTQ View code: 👉 https://lnkd.in/ervqjNiN More projects coming — currently building and improving daily 🚀 #FrontendDeveloper #JavaScript #WebDevelopment #BuildInPublic

Don't hijack your user's session. Give them a choice. 🤝 Pushing a new deployment to production is great but forcing a page reload while a user is mid-form or mid-scroll? Not so great. In my latest article, I explore how to handle New Release Refreshes in React using React Query. I compare two distinct strategies: 🔹 Soft Updates: The "Gentle" approach. Show a notification/toast letting the user know a new version is available. They decide when to refresh. 🔹 Hard Updates: The "Critical" approach. Forcing a page reload to ensure the UI and API stay in perfect sync. I break down exactly how to implement this logic so you can stop "surprising" your users with sudden reloads and start providing a polished, professional update experience. Read the full guide here: https://lnkd.in/dChnpQ49 Github repo: https://lnkd.in/dxTRANMf #ReactJS #UserExperience #ReactQuery #WebDev #FrontendArchitecture

Recently built a React.js Admin Dashboard as a hands-on project to apply and practice what I’ve learned. The goal of this project was to strengthen my understanding of React concepts by building a real-world style UI and implementing common dashboard features. What I implemented: • User management (Add / Delete) • Search & filtering • Pagination • Dark mode • Interactive charts • Responsive design Tech Stack: React.js (Hooks, Context API), React Router v6, CSS Modules, Recharts for data visualization This project helped me better understand state management, component structure, and building reusable UI components in React. Still improving and adding more features Demo: https://lnkd.in/dAm2fVGq GitHub: https://lnkd.in/dFPFTxF3 Feedback and suggestions are welcome! #React #Frontend #LearningByBuilding #Recharts #Dashboard

🌦️ Exploring real-world data with React! Excited to share my Weather App — a project where I worked with APIs to fetch and display live weather data. 🔹 Tech Stack: • React JS • JavaScript • CSS • Weather API 🔹 Features: ✅ Search weather by city ✅ Real-time temperature and conditions ✅ Dynamic UI updates based on data ✅ Clean and responsive design 🌐 Live Demo: https://lnkd.in/gUhuJcYp 🔗 GitHub Repository: https://lnkd.in/gtJQtZbH This project helped me understand how to work with APIs, handle asynchronous data, and build real-world applications using React. Continuing to learn and build more exciting projects 🚀 #react #javascript #webdevelopment #frontend #api #learning #projec

🌦️ Excited to Share My Weather App Project! I built a Weather Application using React.js that fetches real-time data from the OpenWeatherMap API. This project helped me understand how real-world applications interact with external APIs and handle dynamic data. 🛠️ Tech Stack: • React.js • Vite • OpenWeatherMap API • Thunder Client (for API testing) ✨ Key Features: ✔️ Search weather by city ✔️ Real-time temperature, humidity & conditions ✔️ Clean and responsive UI ✔️ API integration with proper error handling 💡 What I Learned: How to fetch and display API data using useEffect Testing APIs using Thunder Client before integration Managing state effectively in React Handling asynchronous operations in frontend apps 🔗 GitHub: https://lnkd.in/dJsygHxz 🌐 Live Demo: https://lnkd.in/d6KRhaWQ This project is part of my journey as a self-taught frontend developer, and I’m continuously working on improving my skills. Feedback and suggestions are always welcome! #ReactJS #WebDevelopment #FrontendDeveloper #JavaScript #APIs #OpenWeatherMap #LearningJourney

🚀 **State Management in React — Explained with a Real-Life Example** Imagine your home 🏠 Now think: * Your fridge stores food 🍎 * Your wardrobe stores clothes 👕 * Your wallet stores money 💰 Everything has its own place, and you know exactly where to find it when needed. 👉 That’s exactly what State Management in React is. --- 🔍 What is State? 👉 State = Data that changes over time and controls your UI 📌 Example: * User login status * Cart items * Theme (dark/light mode) --- ⚡ The Problem (Without Proper State Management) Imagine: ❌ You keep everything randomly in one room ❌ You forget where things are ❌ You keep asking others again and again 👉 That’s what happens when state is messy in React: * Props drilling 😓 * Unnecessary re-renders * Hard to debug --- ✅ The Right Approach 1. Local State (useState) 👉 Like keeping things in your own room const [count, setCount] = useState(0); 💡 Best for small, component-level data --- 2. Lifting State Up 👉 Like keeping shared items in a common room 💡 When multiple components need same data --- 3. Global State (Redux / Zustand) 👉 Like a central storage (locker) for the whole house 💡 Best for: * Auth data * User profile * App-wide settings --- ⚠️ Common Mistakes ❌ Storing everything in global state ❌ Too much prop drilling ❌ Not structuring state properly --- 🔥 Pro Tip 👉 Ask yourself before storing state: “Who needs this data?” * Only this component → Local state * Few components → Lift state * Whole app → Global state --- 🔍 🎯 Final Thought Good state management = Clean code + Better performance 🚀 Because in real life: 👉 Organized home = Peaceful life 👉 Messy home = Daily stress 😅 --- 💬 What do you prefer for state management — Context API, Redux, or Zustand? #ReactJS #StateManagement #FrontendDevelopment #JavaScript #WebDev #CodingTips