Understanding Props and State in React

Is React Getting Too Complicated? React introduced another hook: useEffectEvent() in v19.2. But do we really need it? Or are we just patching complexity with more complexity? React is still incredibly powerful. But if you're building a simple UI, you shouldn't need a "PhD" in hooks to avoid stale closures. 🔹 We got useEffect to simplify side effects. 🔹 Then we added useCallback, useMemo, and useRef to fix its pain points. 🔹 Now we’re adding useEffectEvent… to fix the problems created by useEffect. See the pattern? It feels like every new hook solves a problem introduced by the last one. 💬 Would love to hear: Are you embracing these new hooks — or looking at other frameworks (like Svelte or Solid) for simplicity? #ReactJS #JavaScript #WebDevelopment #Frontend #useEffectEvent #React19 #DeveloperExperience #Opinion #WebDev

React 19 introduced Activity component to solve a common UI problem: how to hide components without losing their state or wasting performance. What makes <Activity> exciting? Keeps component state alive when hidden (no more losing form input, scroll position, or video time) Cleans up effects like event listeners, timers, and subscriptions when the component is hidden – improving performance Faster show/hide transitions since components don’t need to fully unmount and remount A smarter alternative to conditional rendering or just using CSS to hide elements Example use cases: Switching between tabs without losing data Pausing heavy components when not visible Improving performance on complex pages #React19 #JavaScript #Frontend #ReactJS #PerformanceOptimization

Day 5 of #30DaysOfComponents brings you a dynamic and responsive Date Picker in React ⚛️. This Calendar with Month & Year Dropdown features: - Month & Year selection via dropdowns - Dynamic grid generation using Date() APIs - Leap year handling for accuracy - Highlighting for both "today" and selected dates - Smooth hover effects with a modern frosted glass UI Excited to share this creation with you all! 🌟 Code URL: https://lnkd.in/gMANzWfQ #React #JavaScript #Frontend #UIComponents #CodingChallenge

⚛️ Ever wondered how React updates your screen so fast — even when you hit setState() hundreds of times? Every time you call setState(), React quietly rebuilds your UI — but instead of repainting everything, it compares two blueprints (Virtual DOMs), finds what changed, and updates just that piece. That detective work is Reconciliation, powered by React Fiber. It’s why React feels fast — not because it does more, but because it updates less. ⚡ #ReactJS #Frontend #JavaScript #LearningInPublic #WebDev #SoftwareEngineering

⚛️ React Just Made Form Actions Way Cleaner React’s new hook — useActionState — is a game-changer for handling async form submissions. No more juggling useState, useEffect, or endless try/catch blocks. 🙌 Here’s what it does 👇 🧩 You pass it: A form action (e.g., addToCart) An initial state It gives you back three things: 1️⃣ The latest state (e.g., message or result) 2️⃣ A wrapped action (formAction) 3️⃣ A flag showing if it’s still running (isPending) Now your form logic becomes simpler, more declarative, and easier to read. Just write the action, hook it up, and React handles the rest. It’s a small addition but one that makes a big difference in building clean, async-ready UIs. ⚡ 💬 Have you tried useActionState yet? What’s your take on React’s direction with these new declarative patterns? #ReactJS #JavaScript #WebDevelopment #Frontend #ReactHooks #CleanCode #AsyncProgramming #DeveloperExperience #SoftwareEngineering #CodingTips #ReactDevelopers #DevCommunity #UIUX

React Tip: If you’re using useEffect just to update a state when another state changes — pause for a second. That’s often a signal you might be duplicating state unnecessarily. Example: useEffect(() => { setFiltered(users.filter(u => u.active)) }, [users]) Instead, derive it directly in render: const filtered = users.filter(u => u.active) Derived data > duplicated data. It keeps your component cleaner, more predictable, and easier to debug. Have you caught yourself doing this before? #React #ReactJS #WebDevelopment #Frontend #JavaScript #ReactHooks #useEffect #CleanCode #ProgrammingTips #DevCommunity

Not every React pattern that preserves component state is the right choice — and sometimes, unmounting is exactly what we want. There’s been a growing belief that patterns like using an <Activity> (or similar wrappers) should be applied everywhere to avoid unmounting. But preserving a component at all costs isn’t always ideal. Some situations require a clean unmount — resetting internal state, clearing effects, or avoiding stale data. Forcing the component to stay mounted can actually create more bugs than it solves. The key is understanding the lifecycle you need, not blindly picking the “keep it alive” option. State preservation is powerful, but intentional unmounting is just as important. Curious to hear: when have you found unmounting to be the better choice? #ReactJS #WebDevelopment #FrontEnd #JavaScript #SoftwareEngineering #ReactPatterns #CleanCode #UIUX #DevTips #ProgrammingInsights #ReactDeveloper #TechCommunity

⚛️ Batched State Updates Ever wondered why multiple setState calls don’t cause multiple re-renders? That’s React’s batched state updates — a mechanism that groups several state changes into a single render cycle. 💡 Why it matters: Prevents unnecessary renders. Boosts performance. Keeps UI consistent during rapid state changes. ⚠️ Watch out: Batched updates mean setState is asynchronous — your updated value isn’t available immediately after calling it. Use functional updates (setCount(prev => prev + 1)) to stay safe. Mastering React means understanding not just what re-renders — but when and why it does. #ReactJS #Frontend #Performance #JavaScript #WebDevelopment

🚀 Shared a small React demo today that shows how quickly a UI can respond when Hooks and state work together. ✨ What happens in the demo: • When I interact with the component, the output updates instantly on the screen — no refresh, no delay. • If it’s a counter, the number increases or decreases in real time. • If it’s a toggle, the text or color changes immediately. • Every change you see in the output is powered by useState, keeping the UI perfectly in sync. ⚙️ What powers the output: • useState stores the current value shown in the output. • Each click or action updates the state, and React re-renders only what changed. • This makes the output feel fast, smooth, and fully reactive. 💡 Takeaway: Even a tiny UI change can feel advanced when Hooks and state are used with intention. #ReactJS #ReactHooks #useState #FrontendDevelopment #WebDevelopment #JavaScript #UIUX #CodingJourney #LearningInPublic #DeveloperLife #InnovationInCode #BuildInPublic

⚛️ Old vs New: Handling Loading States the Smarter Way 👇 ❌ Before React 19, we had to manually juggle isLoading flags, conditional renders, and custom spinners — too much boilerplate for something so common. ✅ Now, with the new <Loading /> component, React 19 makes async UI handling effortless. It integrates directly with Suspense to show loading states automatically while your components fetch data. ✨ Key Features: 🔄 Automatic Loading State Handling — No need for manual flags. ⚙️ Built-in with Suspense — Works seamlessly with async components. 🎨 Customizable UI — Easily replace <Loading /> with your own spinner or skeleton. 🧠 Cleaner Code, Less Re-renders — Declarative and efficient. #React19 #ReactJS #WebDevelopment #FrontendDevelopment #ReactTips #JavaScript #CleanCode #DevCommunity #CodingLife #WebDev #ProgrammigTips #Tips