I just published a new npm package: auto‑theme‑pro 🌗 It’s a lightweight frontend theme engine that automatically applies dark/light mode to all HTML elements — no CSS required! 😄 It supports Vanilla JS, React, Angular, Vue & more — making UI theming super simple and framework‑agnostic. 👉 Check it out here: https://lnkd.in/dzjTp4Dj Whether you’re building a portfolio site, dashboard, or web app, this package takes care of theme management for you effortlessly. Let me know if you try it out or have feature ideas! 💡 #npm #opensource #javascript #frontend #nodejs #react #angular #vue #webdevelopment
Auto Theme Pro: Lightweight Frontend Theme Engine for Vanilla JS, React, Angular, Vue
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I’ve worked with React, Next.js, and Vue.js, building modern and responsive web applications. Each framework improved my understanding of: Component-based architecture State management Performance optimization Clean UI structure Now I’m thinking about the next step… Should I go deeper into: 🔹 TypeScript & Advanced JavaScript? 🔹 Full-Stack (Node.js / Backend)? 🔹 System Design & Architecture? 🔹 AI integration in web apps? Curious to know — what would YOU focus on next? 👇 #FrontendDeveloper #WebDevelopment #ReactJS #NextJS #VueJS #LearningJourney
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🚀 Activity Component in React.js — Not Just Conditional Rendering Many developers treat conditional rendering as the only way to show/hide UI in React. But there’s a better pattern for complex apps: Activity Components. 🔹 What is an Activity Component? An Activity Component controls which UI is active at a time without unmounting everything. Instead of repeatedly mounting/unmounting components using if or &&, you switch active states. 🔹 How is it different from Conditional Rendering? -Conditional Rendering -Mounts & unmounts components -State resets when component is removed -Can cause unnecessary re-renders -Activity Component -Keeps components mounted -Preserves internal state -Only switches visibility or activity ⚡ Performance Optimization Benefits -Avoids expensive re-mounting -Preserves component state -Reduces unnecessary re-renders -Ideal for tabs, toggles, modals, dashboards import { Activity, useState } from 'react'; function App() { const [isVisible, setIsVisible] = useState(true); return ( <> <button onClick={() => setIsVisible(!isVisible)}>Toggle Activity</button> <Activity mode={isVisible ? 'visible' : 'hidden'}> <textarea placeholder="Type something..." rows={4} cols={50} /> </Activity> </> ); } 👉 Instead of destroying components, we control activity, leading to smoother UI and better performance. 💡 Tip: This pattern scales beautifully in real-world apps like tabs, feature toggles, and multi-step flows. #ReactJS #FrontendDevelopment #WebPerformance #ReactPatterns #JavaScript #LinkedInTech
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📁 Next.js vs React.js: Folder Structure That Scales A lot of performance & scalability issues don’t start with logic… They start with a messy folder structure. Here’s a visual comparison of how I usually organize projects in Next.js vs React.js 👇 🔹 Next.js Built-in routing (app / pages) API routes inside the same project Better structure for SEO & production apps 🔹 React.js More flexible Developer-driven architecture Great for custom & component-heavy apps Both are powerful 💪 The real question is: 👉 Are you structuring your project for today… or for scaling tomorrow? 💬 How do you organize your folders in real projects? #NextJS #ReactJS #FrontendDevelopment #FolderStructure #WebDevelopment #CleanCode #JavaScript #DeveloperLife #FrontendArchitecture #FrontendEngineering #ReactDevelopers #TechLeadership #MERN #UIEngineering
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⚡ React Performance Tip (from real projects) If your app re-renders too often, don’t panic, panic comes later 😄 The fix usually isn’t more useCallback or memo. ✅ First ask: what state actually needs to change? ✅ Colocate state closer to where it’s used ❌ Don’t optimize blindly Performance comes from architecture decisions, not hooks spam. #ReactJS #FrontendEngineering #JavaScript #WebDevelopment
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React & JS #28 Why Hydration Is the Most Expensive Phase in Modern React Apps We often think performance problems come from rendering… but in modern React apps, the most expensive phase is hydration. :-) What is hydration? Hydration is the process where React: Takes server-rendered HTML Attaches event listeners Replays components on the client Runs effects Makes the UI interactive The page looks ready — but React is still working. :-) Why hydration is expensive • Executes a large amount of JavaScript • Replays every component on the client • Runs effects and event bindings • Competes for the main thread • Blocks user interactions Hydration is JS-heavy, not DOM-heavy. :-) Why this hurts real users • Good LCP, but poor TTI • UI visible, but clicks feel delayed • Scrolling jank on first interaction • “Fast page” that feels slow Users don’t care about HTML — they care about interactivity. :-) Right mindset • Reduce what needs hydration • Delay non-critical JS • Split interactive vs static UI • Measure TTI, not just LCP • TL;DR :- SSR makes pages visible faster. Hydration decides when apps feel usable. Most performance pain today lives after HTML, before interaction. #ReactJS #JavaScript #Hydration #WebPerformance #FrontendPerformance #SSR #React18 #WebDev #FrontendEngineering
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🚀 Built a Responsive Recipe Manager Web App using React.js Here’s a quick demo of my frontend CRUD project that allows users to manage recipes with persistent local storage — no backend involved. ✨ Features shown in this video: • Add, edit & delete recipes (CRUD) • ⭐ Mark recipes as favourites & view them in a separate page • Persistent data using browser localStorage • 📱 Fully responsive design (works on mobile & desktop) 🛠 Tech Stack: React.js | JavaScript | HTML | CSS 🔗 Live Demo: https://lnkd.in/dmBgXkih 🔗 GitHub Repo: https://lnkd.in/dZRFEAQP This project helped me improve my understanding of state management, component design, and client-side data persistence in React. Feedback & suggestions are welcome 🙌 #ReactJS #FrontendDevelopment #WebDevelopment #JavaScript #ResponsiveDesign #Projects #LearningInPublic
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🚀 React JS: Why useMemo & useCallback Are GAME CHANGERS for Performance Many React apps work fine at the start… but as your app grows, performance issues sneak in silently 🐌 That’s where useMemo and useCallback come to the rescue 👇 ⚡ useMemo Used to memoize expensive calculations 👉 Prevents unnecessary re-computation on every render const filteredData = useMemo(() => { return data.filter(item => item.active); }, [data]); ⚡ useCallback Used to memoize functions 👉 Prevents unnecessary re-renders of child components const handleClick = useCallback(() => { console.log("Clicked"); }, []); ❌ Without them: Unwanted re-renders Slower UI Performance bottlenecks ✅ With them: Faster renders Optimized components Scalable React apps 💡 Rule of thumb: Use them when passing props to memoized components or handling heavy computations. React performance = clean code + smart hooks 💙 #ReactJS #JavaScript #WebDevelopment #FrontendDeveloper #PerformanceOptimization #ReactHooks #CodingLife
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Most React developers make these 5 mistakes that slow down their app without realising it. 1. Not memoizing components properly Re-rendering components that don't need to re-render is the #1 performance killer. Use React.memo and useMemo where it actually matters — not everywhere. 2. Putting everything in one component A 500-line component is not a component. It's a problem. Break it down. Your future self will thank you. 3. Ignoring lazy loading If you're not code-splitting with React.lazy() and Suspense, you're loading everything upfront. Your users feel that. 4. Skipping key props in lists Using index as key is not the same as using a unique ID. It causes subtle, hard-to-debug UI bugs. 5. Not cleaning up useEffect Memory leaks happen silently. Always return a cleanup function when subscribing to events or timers. Save this post. Your next React project will be cleaner for it. Which one are you guilty of, let me know in the comments. #ReactJS #FrontendDevelopment #WebDevelopment #ReactTips #NextJS #JavaScript #FrontendDev
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Ever faced a blank screen for 5 seconds while your Angular app loads? Here's what it means and how to fix it. I was working on a large-scale Angular application with over 50 components and 15 services. The initial load time was a staggering 8 seconds, and the bundle size was over 2MB. Users were abandoning the app due to the slow load time. I knew I needed to optimize the application. I decided to implement Angular's lazy loading modules. This technique allows you to load JavaScript components asynchronously, reducing the initial load time. Here's how I did it: First, I split the application into feature modules. Then, I configured the router to lazy load these modules. Finally, I ensured that the critical path was as small as possible. 💡 Key Takeaway: Lazy loading modules can significantly reduce the initial load time of your Angular application. It's a simple technique that can have a big impact on user experience. 🅰️ Have you implemented lazy loading in your Angular app? What was your experience? #Coding #TypeScript #Frontend #Angular #AngularJS #WebDev
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If you’re using useState for everything… stop. This video explains useState vs useRef, and next I’ll show how I used useRef to build a stopwatch app. 👉 Which React hook confused you first? Drop it in the comments 👇 #reactjs #frontend #javascript #hooks
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