International JavaScript Conference’s Post

🚀 Optimize Your React App with react-window If you’ve ever rendered a huge list or table in React, you know how quickly performance can tank. 🐢 That’s where react-window comes in — a lightweight library by Brian Vaughn (the same dev behind react-virtualized) that renders only what’s visible on the screen. Instead of loading thousands of DOM nodes at once, it smartly renders just what the user can see — and reuses those components as they scroll. The result? ⚡ Blazing-fast rendering 💡 Lower memory usage 📱 Smoother scrolling Here’s what I love about it: ✅ Super small (~2KB gzipped) ✅ Simple API (FixedSizeList and VariableSizeList) ✅ Easy to integrate with frameworks like Next.js or libraries like MUI #React #WebPerformance #Frontend #ReactWindow #JavaScript #WebDevelopment

💡 𝗟𝗶𝗻𝗸𝗲𝗱𝗜𝗻 𝗣𝗼𝘀𝘁: 𝗪𝗵𝘆 𝗜 𝗦𝘁𝗼𝗽𝗽𝗲𝗱 𝗨𝘀𝗶𝗻𝗴 𝗥𝗲𝗱𝘂𝘅 𝗶𝗻 𝗦𝗺𝗮𝗹𝗹 𝗣𝗿𝗼𝗷𝗲𝗰𝘁𝘀 ⚡ Sometimes simplicity wins over structure! ⚡ After using Redux for years, I realized that in 𝘀𝗺𝗮𝗹𝗹 𝗥𝗲𝗮𝗰𝘁 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀, it often adds more setup than value. Here’s what I use instead and why: ✅ 𝗥𝗲𝗮𝗰𝘁 𝗤𝘂𝗲𝗿𝘆 – Handles server state beautifully with caching, refetching, and auto-updates. ✅ 𝗖𝗼𝗻𝘁𝗲𝘅𝘁 𝗔𝗣𝗜 – Perfect for small-scale global state without boilerplate. ✅ 𝗗𝗶𝗿𝗲𝗰𝘁 𝗔𝗣𝗜 𝗖𝗮𝗹𝗹𝘀 – When the app is simple, why overcomplicate it? 🚀 My rule now: 𝘐𝘧 𝘐 𝘥𝘰𝘯’𝘵 𝘯𝘦𝘦𝘥 𝘤𝘰𝘮𝘱𝘭𝘦𝘹 𝘴𝘩𝘢𝘳𝘦𝘥 𝘴𝘵𝘢𝘵𝘦 𝘭𝘰𝘨𝘪𝘤, 𝘙𝘦𝘥𝘶𝘹 𝘴𝘵𝘢𝘺𝘴 𝘰𝘶𝘵. Less code, fewer dependencies, faster development. Have you also moved away from Redux for smaller apps? Would love to hear your take 👇 #ReactJS #NextJS #FrontendDevelopment #ReactQuery #ContextAPI #WebDevelopment #CodingTips #JavaScript

🚀 JSX and the Babel Transformation (React Development) JSX is not directly executable by browsers; it requires transformation into standard JavaScript. Babel is a popular tool that handles this transformation, converting JSX code into regular JavaScript code that browsers can understand. This transformation process involves converting JSX elements into `React.createElement` calls. Understanding this process helps you appreciate how React works under the hood. Learn more on our App and Website: 📱 App: https://lnkd.in/gefySfsc 🌐 Website: https://techielearn.in #ReactJS #Frontend #WebDev #React #professional #career #development

⚡ Performance Hooks in React — Speed Up Your App React re-renders more often than you think. Most performance issues aren’t caused by slow APIs — they’re caused by unnecessary re-renders and heavy UI updates. Here are 5 React hooks that can drastically improve performance: ✅ useMemo() — cache expensive calculations ✅ useCallback() — avoid recreating functions on every render ✅ useTransition() — keep UI responsive during heavy updates ✅ useDeferredValue() — debounce UI updates automatically ✅ useId() — generate unique IDs (even with SSR) Small tweaks → Big performance wins. Which hook do you use the most? #React #ReactJS #Performance #WebDevelopment #Frontend #ReactHooks #CleanCode #JavaScript #Optimization #DevTips

🚀 Next.js made simple! Get your hands on the ultimate Next.js Cheat Sheet, your go-to guide for mastering routing, navigation, styling, data fetching, and optimization. Whether you’re building your first app or refining a production-ready project, this quick reference by Jonas Herrmannsdörfer will help you streamline your workflow and build high-performance web applications faster than ever. 👉 Read now on JavaScript Magazine and take your Next.js skills to the next level! 🔗 https://lnkd.in/ereShKW2 #NextJS #ReactJS #WebDevelopment #Frontend #JavaScript #WebDevTips #JSCommunity

🚀 Angular Tip of the Day If your Angular app feels slow, try using OnPush change detection strategy. It reduces unnecessary UI checks and improves performance significantly. Example: @Component({ changeDetection: ChangeDetectionStrategy.OnPush }) It's a small change that makes a big difference. #Angular #WebDevelopment #Frontend #JavaScript

Your app isn’t slow… you’re just loading everything at once! ⚡ React has a smarter way to handle this — Lazy Loading. It loads only what the user actually needs, keeping everything fast, smooth, and efficient. That’s how performance feels seamless and instant. A small tweak, big difference. (I know I said it “holds components,” but since this is a short, I couldn’t dive into payloads, caching, and all that deep stuff — it’s just an idea spark for now.) #ReactJS #WebDevelopment #Frontend #LazyLoading #CodingTips #JavaScript #Performance #DeveloperLife #Shorts

⚛️ React Day 6 — Conditional Rendering: When Your UI Thinks 🧠 Ever wanted your app to show different things at different times? That’s where Conditional Rendering comes in. It’s like giving your React app a brain — “If this happens, show this; otherwise, show that.” Example 👇 {isLoggedIn ? <Dashboard /> : <Login />} 💡 In simple words: 👉 If condition is true → render one component 👉 Else → render another React lets your UI react (pun intended 😉) — It doesn’t just display data; it makes decisions. #React #WebDevelopment #JavaScript #Frontend #LearnReact #TechSeries #Developers

⚡ Next.js is my default React framework — I’ve been using it for years. Let’s take a dive into the latest Next.js 16. Did they finally fix Next.js? Over the years, Next.js has been my go-to for building production-ready web apps. But it hasn’t always been smooth sailing — from long build times to confusing caching behavior, I’ve seen both the beauty and the pain. With Next.js 16, things are looking much more polished. Here are a few standout updates 👇 ✅ New Caching Model — Explicit caching with the new "use cache" directive gives more predictable data behavior. ⚙️ Turbopack as Default — The new bundler replaces Webpack, delivering faster builds and refreshes. 🧠 AI-Powered Debugging Tools — Next DevTools now integrates with AI for smarter issue detection. 🚀 Smarter Routing & Prefetching — Layout deduplication and optimized navigation improve app performance. Read the full breakdown on the official blog 👉 https://lnkd.in/dyvUrYjG 💭 So, did they fix Next.js? Honestly — yes, in a lot of ways. It feels more stable, faster, and more intentional. Still, as always, migration might take a bit of planning if you’re coming from an older version. Have you tried Next.js 16 yet? What’s your take on the new features? #Nextjs #React #Frontend #WebDevelopment #JavaScript #SoftwareEngineering