From useEffect to useQuery: Simplify your React data fetching with Qortex

𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗰 𝗦𝗲𝗺𝗶𝗰𝗼𝗹𝗼𝗻 𝗜𝗻𝘀𝗲𝗿𝘁𝗶𝗼𝗻 (𝗔𝗦𝗜) 𝗶𝗻 𝗝𝗮𝘃𝗮𝗦𝗰𝗿𝗶𝗽𝘁 --> 𝘁𝗵𝗲 “𝗵𝗲𝗹𝗽𝗳𝘂𝗹” 𝗳𝗲𝗮𝘁𝘂𝗿𝗲 𝘁𝗵𝗮𝘁 𝘀𝗼𝗺𝗲𝘁𝗶𝗺𝗲𝘀 𝗵𝗲𝗹𝗽𝘀 𝗮 𝗹𝗶𝘁𝘁𝗹𝗲 𝘁𝗼𝗼 𝗺𝘂𝗰𝗵. JavaScript automatically inserts semicolons (;) when it thinks you forgot them. Sounds convenient. Well... sometimes it can change your code’s meaning entirely! 𝗛𝗲𝗿𝗲’𝘀 𝗮 𝗰𝗹𝗮𝘀𝘀𝗶𝗰 𝗲𝘅𝗮𝗺𝗽𝗹𝗲 👇 function getData() {  return  {   message: "Hello World"  } } console.log(getData()); You’d expect it to log { message: "Hello World" } 𝗕𝘂𝘁 𝘀𝘂𝗿𝗽𝗿𝗶𝘀𝗲 --> It logs undefined 𝗪𝗵𝘆? Because ASI inserts a semicolon right after return return; // inserted automatically {  message: "Hello World" } So the function actually returns nothing. 𝗧𝗼 𝗳𝗶𝘅 𝗶𝘁: function getData() { return { message: "Hello World" } } 𝗧𝗶𝗽: Always keep the return and the value on the same line. ASI is like that friend who “fixes” your code but never tells you what they changed. Always use semicolons intentionally, not accidentally. #JavaScript #WebDevelopment #Frontend #CleanCode #DevCommunity

If you care about speed, user experience, and conversion rates, avoid these common pitfalls 👇 ⚡ JavaScript Optimization Killers - Massive Bundle Sizes – 500KB+ JS on mobile 😬 - Blocking Third-Party Scripts – Analytics choking page load - Memory Leaks – Event listeners that never die - Synchronous Operations – Blocking the main thread for 100ms+ ⚛️ React Performance Blunders - Unnecessary Re-renders – Components updating 100+ times - Missing Memoization – Recomputing expensive logic every render - Prop Drilling Hell – 10+ levels deep state passing - No Virtualization – Rendering 1000+ DOM nodes at once 🌐 Web Vitals Destroyers - Poor LCP – Hero image loads after 4+ seconds - CLS Nightmares – Layout shifts mid-interaction - FID Problems – 300ms+ delay on user input - No Preloading – Critical assets load too late 🧩 API & State Mistakes - No Request Deduplication – Same API hit 10+ times - Overfetching Data – Loading 100KB for 1KB of info - No Caching Strategy – Refetching everything on navigation #frontend #webperformance #reactjs #javascript #webdev #frontendinterview

😤 “I wrapped it in useMemo... but the component is still slow!” I faced this while optimizing a React dashboard. I used useMemo and useCallback everywhere — but performance barely improved. Turns out, I was solving the wrong problem. 🧠 What’s Really Happening useMemo and useCallback don’t make code faster — they just avoid recalculations if dependencies don’t change. But if your dependency is always changing, memoization never kicks in. Example 👇 const data = useMemo(() => expensiveCalculation(filters), [filters]); If filters is a new object every render (like { type: 'active' }), useMemo recomputes anyway — no performance win. ✅ The Fix Stabilize your dependencies first. Use useState, useRef, or memoize higher up to prevent unnecessary object recreation. const [filters, setFilters] = useState({ type: 'active' }); Or extract stable references: const stableFilter = useMemo(() => ({ type: 'active' }), []); Then memoization actually works as intended ✅ 💡 Takeaway > useMemo is not magic. It’s only as good as the stability of your dependencies. Optimize data flow first, hooks second. 🗣️ Your Turn Have you ever overused useMemo or useCallback? What’s your go-to way to diagnose React re-renders? #ReactJS #WebDevelopment #PerformanceOptimization #FrontendDevelopment #JavaScript #CleanCode #CodingTips #DevCommunity #LearnInPublic

Even an empty JS file triggers the creation of a Global Execution Context (GEC) — and with it, the global object and the this keyword. 🔍 In browsers, this === window 🖥️ In Node.js, this === {} (module scope) But here’s the twist: the global object isn’t created by the JS engine (like V8) — it’s provided by the environment (browser or Node.js). 💡 Want a consistent way to access the global object across platforms? Say hello to globalThis — introduced in ES2020 to unify window and global. 📊 I’ve broken this down into a slide deck with examples, call stack behavior, and input-output questions to help you master the concept. 👇 Check out the slides and let me know what surprised you most! #JavaScript #Frontend #NodeJS #InterviewPrep #globalThis #ExecutionContext #LinkedInLearning #TechSlides #GundlapudiExplains

Just shared insights on managing extensive data sets in Vue 3. Exploring how virtual lists revolutionized performance in a recent project, converting a slow, lagging table into a seamlessly smooth experience If you've encountered challenges with large tables, sluggish interfaces, or infinite scroll problems, this read is tailored for you. https://lnkd.in/ei7FxbNb #Vue3 #Frontend #WebDevelopment #Performance #JavaScript

🚀 Next.js 16 (Beta) is Here - Faster, Smarter, and Turbocharged! 🤔 What’s New: 1️⃣ Turbopack (Stable) 🌟 Default bundler for all new apps. ⚡ Up to 10× faster Fast Refresh and 5× faster builds, no config needed! 2️⃣ File System Caching (Beta) 💽 Turbopack now caches on disk, even faster restarts for huge projects. 💡 Boosts dev speed, especially in monorepos. 3️⃣ React Compiler Support (Stable) 🤖 Built-in automatic memoization - fewer re-renders, zero extra code. 🔧 Enable with reactCompiler: true in your config. 4️⃣ Enhanced Routing & Prefetching 🧭 Smarter navigation with layout deduplication and incremental prefetching. 📉 Smaller transfers, faster page transitions. 5️⃣ Build Adapters API (Alpha) 🔌 Create custom adapters to modify or extend the build process. 🧱 Opens the door for advanced deployment setups. 6️⃣ New Caching APIs 🪄 updateTag() → instant cache refresh (Server Actions). ♻️ revalidateTag (tag, 'max') → smarter SWR revalidation. 7️⃣ React 19.2 Integration 🎬 Includes View Transitions, useEffectEvent(), and <Activity/>. 💥 Breaking Changes: • Node.js 20.9+ required. • AMP & next lint removed. • Async params, updated image defaults. 💬 What do you think of this massive update? Will you switch to Turbopack full-time now? 👉 Full details: nextjs.org/blog #Nextjs #React #WebDevelopment #Turbopack #Frontend #JavaScript

Landing page in under 5 minutes? Well, It took me just 4 minutes this time. A small update on my Landing Page Builder. It’s still in progress, but I’m getting closer. Right now, it’s not perfectly smooth, but it gets the job done. Major optimizations are on the way to make it faster and more efficient. Key Features (so far): - Build simple landing pages within minutes - Fully editable components - Export code as an HTML page or a Next.js component - Generates JSON data for whole page - Upcoming: Build pages directly from JSON data Tech Stack: Next.js, Tailwind CSS, shadcn/ui, Zustand One small update at a time. 😊 #NextJS #TailwindCSS #WebDevelopment #React #FrontendDevelopment #SoftwareEngineering #FullStackDevelopment #JavaScript #IndieDev #Coding #DeveloperJourney

In React, the difference between controlled and uncontrolled components defines how you handle form data. In controlled components, React state drives the form input meaning, what you type is synced with a state variable. In uncontrolled components, the DOM keeps the data, and you access it via useRef. Controlled gives you predictability, validation, and control. Uncontrolled is simpler, less boilerplate, but harder to track and test. If you’re building anything beyond a basic form, controlled is usually the way to go. Have you ever mixed both in the same form? #react #frontend #javascript #webdevelopment

The idea was simple — fetch live data asynchronously and visualize it on an interactive map without refreshing the page. Each marker represents a real-time data point, added dynamically as the response loads. This small experiment shows how powerful asynchronous JavaScript and modern mapping libraries can be when combined to create seamless user experiences. It’s not just code — it’s about making data come alive ✨ #JavaScript #AJAX #LeafletJS #WebDevelopment #CodingJourney #FrontendDevelopment #Innovation #LearningByDoing #DevCommunity

Small details can make a huge difference. I once built a page where dropdown selections triggered API calls to fetch large datasets. Every change called the API, the usual approach. My lead suggested caching the results in state or Redux, reusing them on repeated selections. The result: faster load times, less strain, and a much better user experience. Optimization isn’t just about bundling. Memoization, lazy loading, and smart API handling matter even before the code ships. #FrontendDeveloper #React #JavaScript #WebPerformace