"Understanding useEffect in React Hooks for side effects"

🚀 Forms in React: Controlled Components In React, form elements are typically controlled components, meaning their value is controlled by React state. When the user enters data into a form element, the event handler updates the corresponding state variable. This ensures that React has complete control over the form's data. Controlled components make it easier to validate form input, handle form submissions, and manage the overall state of the form. ⚡ Transform your career with daily micro-learning! 🎯 Learn efficiently — 10k concise concepts + 4k articles + 12k quiz questions. AI-personalized learning! 📲 Download the app: https://lnkd.in/gefySfsc 💡 Discover more: https://techielearn.in #ReactJS #Frontend #WebDev #React #professional #career #development

React’s new useOptimistic() hook is a game-changer for user experience! It lets you update the UI immediately before the server confirms the change perfect for features like likes, comments, or chat messages. Example: const [optimisticMessages, addOptimisticMessage] = useOptimistic(messages); function handleSend(newMessage) { addOptimisticMessage([...optimisticMessages, newMessage]); sendToServer(newMessage); } 1- The UI feels instant 2- The user stays engaged 3- Errors can still be handled gracefully once the server responds I just tested this in a small MERN app, it makes the frontend feel buttery smooth. Have you tried useOptimistic() yet? #ReactJS #MERNStack #WebDevelopment #Frontend #JavaScript #Developers

🚀 Rendering Lists with Array.map() (React Development) The `Array.map()` method is commonly used to iterate over an array and transform each element into a React component. Inside the `map` function, you create the JSX for each item in the list. Remember to add the `key` prop to the outermost element returned by the `map` function. The `key` prop should ideally be a unique identifier from your data (e.g., an ID from a database). 🌟 Smart learning > Hard working 🚀 Accelerate your tech journey — 10k+ bite-sized concepts, 4k+ deep-dive articles, 12k+ quizzes! 📱 Get the app: https://lnkd.in/gefySfsc 💻 Explore more: https://techielearn.in #ReactJS #Frontend #WebDev #React #professional #career #development

I often come across this question: “Should I use React or Next.js for my next project?” Let’s discuss it! 👇 React.js is a library — ideal for creating dynamic UIs and managing client-side rendering. It allows complete control… but you still need to manage routing, SEO, and optimizations by yourself. Next.js on the other hand, is a framework built on top of React. It offers: ✅ File-based routing ✅Server-side rendering (SSR) ✅ API routes ✅ Enhanced SEO benefits ✅ Image & performance optimizations Think of it like this… React is the engine. Next.js is the complete car. If your app is more interactive, dashboard-style, or internal, React works great. If your project is SEO-driven, content-heavy, or needs better performance, Next.js wins easily. In my opinion, Start with React to just get the basics down. Use Next.js when you’re ready to grow, and scale or work on your first production app. What framework are you using for your current project — React or Next.js? #reactjs #nextjs #frontend #webdevelopment #mernstack #javascript #developers #programming

🚀 Functional Components (React Development) Functional components are the primary way to define UI elements in modern React. They are JavaScript functions that accept props as arguments and return React elements describing what should appear on the screen. Unlike class components, functional components do not have state or lifecycle methods by default, making them simpler and easier to test. They promote a more declarative and predictable approach to UI development, increasing code readability. With the introduction of Hooks, functional components can now manage state and side effects, making them as powerful as class components. Learn more on our App and Website: 📱 App: https://lnkd.in/gefySfsc 🌐 Website: https://techielearn.in #ReactJS #Frontend #WebDev #React #professional #career #development

🚀 Event Bubbling and Event Capturing (JavaScript) Event bubbling is the process where an event triggered on an element propagates up the DOM tree to its parent elements. Event capturing is the opposite, where the event propagates down the DOM tree from the document root to the target element. You can control whether an event listener is executed during the capturing or bubbling phase using the `capture` option in `addEventListener`. Understanding event bubbling and capturing is essential for managing complex event interactions and preventing unintended side effects. Using `stopPropagation()` can prevent bubbling and capturing. Learn more on our App and Website: 📱 App: https://lnkd.in/gefySfsc 🌐 Website: https://techielearn.in #JavaScript #WebDev #Frontend #JS #professional #career #development

🧠 Sometimes I forget how powerful Next.js really is. You start a new project, type npx create-next-app, and in minutes, you’ve got routing, SSR, API routes, image optimization — all just there. No endless setup. No messy configs. Just a clean slate to build something cool. I’ve worked with other frameworks before, but Next.js feels different. It’s like it gets what developers actually need — performance without pain. And with the new App Router and React Server Components, it feels like we’re stepping into a whole new era of how we build web apps. For me, it’s not just about code. It’s about crafting experiences that feel fast, smooth, and meaningful to the people using them. If you’re also exploring Next.js — I’d love to hear your take: 👉 What’s your favorite “aha” moment while building with it? #NextJS #React #WebDevelopment #Frontend #DevLife #JavaScript

💥 𝗜𝘀 𝗬𝗼𝘂𝗿 𝗥𝗲𝗮𝗰𝘁 𝗔𝗽𝗽 𝗦𝗹𝗼𝘄? 𝗛𝗲𝗿𝗲’𝘀 𝗛𝗼𝘄 𝘁𝗼 𝗠𝗮𝗸𝗲 𝗜𝘁 𝗕𝗹𝗮𝘇𝗶𝗻𝗴 𝗙𝗮𝘀𝘁! 🚀 ⚛️ 𝗠𝗮𝗸𝗲 𝗬𝗼𝘂𝗿 𝗥𝗲𝗮𝗰𝘁 𝗔𝗽𝗽 𝗙𝗹𝘆 🚀 Even the best React apps slow down sometimes. But you can fix it with these 5 pro-level tweaks 👇 🔁 𝗖𝘂𝘁 𝗥𝗲-𝗿𝗲𝗻𝗱𝗲𝗿𝘀 Use React.memo, useCallback, useMemo — your new BFFs for smoother UI. 📃 𝗩𝗶𝗿𝘁𝘂𝗮𝗹𝗶𝘇𝗲 𝗟𝗶𝘀𝘁𝘀 Why render 1000 items when only 10 are visible? Use react-window. 🛑 𝗟𝗮𝘇𝘆 𝗟𝗼𝗮𝗱 𝗙𝗧𝗪 React.lazy + Suspense = less JS on first load, faster app. 🎯 𝗨𝘀𝗲 𝗖𝗼𝗻𝘁𝗲𝘅𝘁 𝗦𝗺𝗮𝗿𝘁𝗹𝘆 Don’t put fast-changing data in Context — it’ll slow everything. 🔍 𝗠𝗲𝗮𝘀𝘂𝗿𝗲, 𝗗𝗼𝗻’𝘁 𝗚𝘂𝗲𝘀𝘀 React DevTools > Hunches. Always profile before optimising. 💡 𝑇𝑖𝑛𝑦 𝑡𝑤𝑒𝑎𝑘𝑠 = 𝑚𝑎𝑠𝑠𝑖𝑣𝑒 𝑝𝑒𝑟𝑓𝑜𝑟𝑚𝑎𝑛𝑐𝑒 𝑤𝑖𝑛𝑠. What’s your secret React performance tip? ⚙️ credit - Chetan Khulage #React #MERN #WebDev #Frontend #Coding #Performance #JavaScript #TechInterview #Developers

𝗪𝗵𝗲𝗻 𝗜 𝗳𝗶𝗿𝘀𝘁 𝘀𝘁𝗮𝗿𝘁𝗲𝗱 𝗹𝗲𝗮𝗿𝗻𝗶𝗻𝗴 𝗥𝗲𝗮𝗰𝘁, 𝗶𝘁 𝗵𝗼𝗻𝗲𝘀𝘁𝗹𝘆 𝗳𝗲𝗹𝘁 𝗼𝘃𝗲𝗿𝘄𝗵𝗲𝗹𝗺𝗶𝗻𝗴. All those new concepts like components, props, and state were confusing at first. But what helped me move forward was building small projects, not tutorials, but things I actually wanted to use. 𝗔 𝘀𝗶𝗺𝗽𝗹𝗲 𝘁𝗼-𝗱𝗼 𝗮𝗽𝗽, 𝗮 𝘄𝗲𝗮𝘁𝗵𝗲𝗿 𝘄𝗶𝗱𝗴𝗲𝘁, 𝗮𝗻𝗱 𝗹𝗮𝘁𝗲𝗿, 𝗮 𝗱𝗮𝘀𝗵𝗯𝗼𝗮𝗿𝗱 𝗶𝗻𝘁𝗲𝗿𝗳𝗮𝗰𝗲. Each project taught me something new about how React really works. The moment I saw my first dynamic page update without a full reload, I knew this was the kind of development I wanted to do. Now, React (and Next.js) are the tools I use every day to build fast, user-friendly web experiences. If you’re just getting started with React, my advice is simple: 𝗕𝘂𝗶𝗹𝗱 𝘀𝗼𝗺𝗲𝘁𝗵𝗶𝗻𝗴 𝗿𝗲𝗮𝗹. 𝗘𝘃𝗲𝗻 𝗶𝗳 𝗶𝘁’𝘀 𝘀𝗺𝗮𝗹𝗹, 𝘆𝗼𝘂’𝗹𝗹 𝗹𝗲𝗮𝗿𝗻 𝗺𝗼𝗿𝗲 𝘁𝗵𝗮𝗻 𝗮𝗻𝘆 𝘁𝘂𝘁𝗼𝗿𝗶𝗮𝗹 𝗰𝗮𝗻 𝘁𝗲𝗮𝗰𝗵 𝘆𝗼𝘂. W3Schools.com is the best place to learn. How did you start your React journey? #Reactjs #WebDevelopment #LearnToCode #CodingJourney #FrontendDevelopment #JavaScript #Nextjs #WebDeveloper #TechCareer #ProgrammingLife #Motivation