How React's Fiber improves UI rendering and responsiveness

React's New <Activity> Component 🔥: Say Goodbye to Lost State! Are you still using the && operator or display: none to hide components? That's the old way! The <Activity> component is a massive step up from traditional Conditional Rendering. When you set it to mode="hidden", here's what happens: 💾 It preserves the component's State and DOM structure (State Preserved). 🧹 It cleans up Side Effects like useEffect, ensuring no background performance drain (Effects Cleaned Up). 🚀 It's perfect for Fast Navigation and Instant State Restoration in complex UIs like Tabbed Interfaces, Carousels, or Wizard Forms. Check out the comparison image to see the difference between the old method (where state is lost) and the new Activity component! What are your thoughts on this new concept? Are you planning to use the <Activity> component in your next project? Let me know in the comments! #React #React19 #ActivityComponent #Frontend #WebDevelopment #JavaScript #PerformanceOptimization #StateManagement #NewReactFeatures #Code #Programming

Simplify Promise Handling in Vite with Eager Loading ⚙️ Join Steve Kinney to master Vite, the fast, zero-config build tool for modern web projects. Learn bundling, asset optimization, hot module reloading, plugins, and integration with React and Svelte to streamline development and build scalable, high-performance apps. https://lnkd.in/ejdQNjeu #Vite #WebDev #FrontendDev #Developers #Coding #JavaScript #TypeScript #DevLife #Programming #TechTips #WebDev #Programming #Coding #LearnToCode

React 19 introduces some truly game-changing features that make UI rendering and side effects faster, smoother, and more predictable. 1: <Activity /> — Smarter Rendering Control Tired of losing component state when switching between sections or tabs? <Activity /> lets you hide parts of your UI without unmounting them. ✅ Why it matters: Keeps hidden components mounted Preserves state (no reset on re-render) Perfect for tab navigation, modals, and multi-step forms 2: useEffectEvent — Stable & Reliable Effects Managing effects that depend on changing props or state often causes unwanted re-renders or stale closures. With useEffectEvent, React now separates event logic from effect logic, making them more stable and predictable. ✅ Why it’s powerful: No more stale data in effects Prevents unnecessary effect re-runs Keeps ESLint dependency rules intact <Activity /> → Keeps hidden components alive and stateful useEffectEvent → Prevents effect chaos and ensures stability #React #React19 #ReactJS #ReactHooks #JavaScript #WebDevelopment #FrontendDevelopment #Frontend #WebDev #Coding #Programming #DevCommunity #SoftwareEngineering #WebApps #Hooks

🚀 React 19.2 is here, and it’s packed with game-changing features! Released on October 1, 2025, this update tackles some of the most common challenges React developers face: ✨ Activity Component - Preserve state while hiding components 🎯 useEffectEvent Hook - Say goodbye to stale closures ⚡ Enhanced SSR - Better streaming and Suspense batching 🔧 DevTools Integration - Improved performance profiling The Activity component is a game-changer for complex UIs like dashboards and multi-step forms. Instead of unmounting components, you can now pause them while keeping their state intact. The useEffectEvent hook finally solves the “stale closure” problem elegantly - access the latest props and state without adding them to dependency arrays. Have you upgraded yet? What features are you most excited about? #React #ReactJS #WebDevelopment #JavaScript #Frontend #Programming #WebDev #SoftwareDevelopment #CodingLife #DeveloperTools #React19 #TechUpdate #FrontendDevelopment #UIEngineering #ModernWeb #looking #for #update ----- 📚 Full breakdown in the slides below - perfect for your next tech talk or team presentation! 💬 Drop a comment: Which React 19.2 feature will you try first?

Unlocking JavaScript’s versatility means understanding the tools that make code flexible, portable, and future-proof. If you’ve ever wondered how libraries manage to run seamlessly across browsers, Node.js, and module loaders — UMD (Universal Module Definition) is a key part of the story. I just published an article that breaks down how UMD works, why it became so important, and where it stands today in a world dominated by ES Modules. Whether you're a seasoned JS developer or just diving into module systems, this is a quick and valuable read. 👉 Check out the full article and boost your understanding of JavaScript architecture. #JavaScript #UMD #WebDevelopment #Frontend #Coding #SoftwareEngineering #JSModules #TechInsights #Programming https://techhub.iodigital.comhttps//techhub.iodigital.com/articles/javascript-module-systems

console.log("Start"); setTimeout(() => console.log("...Middle..."), 0); console.log("End"); The output is "Start", "End", "...Middle...". If JavaScript is single-threaded and can only do ONE thing at a time, how is this possible? This paradox used to drive me crazy. JavaScript isn't "magic"—it's a system. The "magic" is a brilliant trio of components working behind the scenes: Web APIs, the Event Loop, and the Task Queues. I've just published a deep-dive article that breaks this down, piece by piece, with simple analogies to finally make it click. If you're a designer learning to code, a new developer, or anyone who wants to truly understand how JavaScript works "under the hood," this is for you. You can read the full article on Medium here: https://lnkd.in/gc9wEdDw #JavaScript #WebDevelopment #FrontendDeveloper #Async #EventLoop #Programming #Developer #Coding #NodeJS #Tech #BuildInPublic #SoftwareDevelopment #Promises #AsyncAwait #WebDev #Engineering #SoftwareEngineering #ComputerScience #FullStackDeveloper #ReactJS #CodeNewbie #DeveloperLife #JavascriptDeveloper #TechnicalWriting #TechCommunity #UIUX #DesignerWhoCodes #Collaboration #Frontend

Favor Composition over Inheritance when creating React Components. Here is why 👇 The main idea behind composition consists of two steps: 1/ Break the UI into many smaller reusable components. 2/ Combine these reusable components into more complex components. This way, you have multiple smaller building blocks that can be reused across the codebase to fulfill different use cases. Composition keeps core components unchanged and lets you add features via props or small wrappers. Inheritance forces new subclasses for each variant, leading to less flexible components and more code. By using composition, you can mix different behaviors like <LoadingButton />, <BackButton />, etc, without touching the core/base components. Read more here: https://lnkd.in/dK25edxr --- 👋 Join 28,000+ software engineers learning JavaScript, Software Design, and Architecture: https://thetshaped.dev/ ----- ♻ Repost to help others find it. #react #softwareengineering #programming #thetshapeddev

How Next.js SSR Really Works Under the Hood Next.js uses a 3-layer architecture where React Server DOM serializes components into binary RSC payloads via ReactDOMServer.renderToReadableStream. The bundler (Webpack/Turbopack) automatically code-splits client bundles while the server streams serialized component trees. React Client DOM then hydrates these streams - essentially "reviving" server-rendered components by attaching event handlers and making them interactive. This entire process is powered by file-system-based routing where every page.tsx automatically maps to a URL route. The magic happens through seamless coordination between server-component execution, client-side hydration, and intelligent code splitting - delivering both blazing-fast initial loads and full SPA interactivity. #NextJS #React #SSR #WebDevelopment #JavaScript #Programming #Frontend

7 React Hooks that'll save you hours of coding time. Stop reinventing the wheel. The useHooks library has battle-tested solutions for the problems you're solving every day. What's inside: ✨ useMediaQuery – Responsive design without the headache ✨ useHover – Smooth animations, zero complexity ✨ useCopyToClipboard – One-click text copying ✨ useToggle – Show/hide made simple ✨ useIdle – Track user inactivity like a pro ✨ useMeasure – Get element dimensions instantly ✨ useLocalStorage – Data persistence, done right Bonus: useCounter for managing numeric state with built-in min/max controls. Each Hook comes with real code examples and visual demos you can use today. Work smarter, not harder. 💡 #React #JavaScript #WebDevelopment #ReactHooks #FrontendDevelopment #Coding #DeveloperTools #NovaLabs

Clean architecture or chaos — the choice is yours. ⚡ Express.js gives flexibility and minimalism, but as projects scale, structure becomes a challenge. That’s where NestJS shines — it brings architecture, scalability, and maintainability on top of Express. ✅ Modular & testable design ✅ Clear separation of concerns ✅ Enterprise-ready architecture If you’ve ever struggled with messy backend folders in Express, NestJS is a game changer. 🚀 Know where to put your code. One stack, infinite builds. #NestJS #ExpressJS #NodeJS #BackendDevelopment #JavaScript #FrontendDevelopment#WebDevelopment #CleanCode #FullStackDeveloper #Programming #Developers #SoftwareEngineering #TechCommunity