React's ViewTransition: Smoother SPA Navigation

Today I explored Form Handling & Routing in React. Key takeaways: Managing form state with useState Implementing basic form validations Navigating between pages using BrowserRouter Building forms that actually validate and route correctly feels like a big step toward real-world applications. Onward and upward! 💪 #ReactJS #MERNStack #WebDevelopment #Frontend #LearningInPublic #JavaScript #ReactRouter

💡 𝗧𝗶𝗽 𝗼𝗳 𝘁𝗵𝗲 𝗗𝗮𝘆 — 𝗥𝗲𝗮𝗰𝘁 𝗡𝗮𝘁𝗶𝘃𝗲 𝗗𝗶𝗱 𝘆𝗼𝘂 𝗸𝗻𝗼𝘄? In React, 𝘂𝗽𝗱𝗮𝘁𝗶𝗻𝗴 𝘀𝘁𝗮𝘁𝗲 𝘄𝗶𝘁𝗵 𝘁𝗵𝗲 𝘀𝗮𝗺𝗲 𝘃𝗮𝗹𝘂𝗲 𝗱𝗼𝗲𝘀 𝗻𝗼𝘁 𝘁𝗿𝗶𝗴𝗴𝗲𝗿 𝗮 𝗿𝗲-𝗿𝗲𝗻𝗱𝗲𝗿. React uses "Object.is" to compare the previous and next state. If they’re the same, React skips the re-render entirely. Why this matters: - Prevents unnecessary renders - Helps you reason about performance - Explains why some "setState" calls appear to “do nothing” Understanding this makes state behavior feel far less magical. #React #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment #SoftwareEngineering #CodingTips #PerformanceOptimization #FullstackDeveloper

🚀 Understanding the useEffect Hook in React useEffect is a powerful hook used to handle side effects in functional components, such as: API calls Subscriptions & event listeners Timers Cleanup on unmount Key concepts covered ✔️ Mount → runs after initial render ✔️ Update → re-runs when dependencies change ✔️ Unmount → cleanup to prevent memory leaks ✔️ Dependency array → controls when the effect runs Strong understanding of hooks leads to cleaner, scalable, and more predictable React applications. #ReactJS #useEffect #FrontendDevelopment #JavaScript #WebDevelopment #ReactHooks #SoftwareEngineering #LearningJourney

Why useEffect runs twice in React (and it’s NOT a bug) 👇 In development mode, React intentionally runs effects twice to help you: • detect side effects • enforce cleanups • avoid hidden bugs In production, it runs once. Fighting React here usually means misunderstanding React. Have you ever been confused by this behavior? #ReactJS #JavaScript #Frontend #WebDev #ReactHooks #TechLearning

🚀 𝐑𝐞𝐚𝐜𝐭 𝐍𝐞𝐰 𝐇𝐨𝐨𝐤: 𝐮𝐬𝐞𝐄𝐟𝐟𝐞𝐜𝐭𝐄𝐯𝐞𝐧𝐭 ✅ React devs know the pain 😅 useEffect + dependencies often leads to: ⚠️ stale closures ⚠️ re-runs you didn’t want ⚠️ lint warnings / dependency confusion 💡 𝐄𝐧𝐭𝐞𝐫: 𝐮𝐬𝐞𝐄𝐟𝐟𝐞𝐜𝐭𝐄𝐯𝐞𝐧𝐭 ✅ lets you create stable event handlers ✅ always reads the latest props/state ✅ avoids unnecessary useEffect dependency issues ✅ perfect for callbacks like: 👉 onScroll, onClick, setInterval, subscriptions 📌 𝐈𝐝𝐞𝐚: ➡️ keep your effect reactive ➡️ keep your event logic stable This makes React code: cleaner + predictable + less buggy 💯 💬 Have you tried useEffectEvent yet? #React #ReactJS #Frontend #WebDevelopment #JavaScript #Hooks #useEffect #SoftwareEngineering

Many developers believe that the useEffect hook running twice in React indicates a problem, but this is not the case. React intentionally executes effects twice in development mode to help identify side effects and cleanup bugs early. This behavior is a result of Strict Mode, which involves the following steps: - Mounts the component - Runs the effect - Cleans it up - Mounts it again These steps are designed to ensure that your cleanup logic is correct and that your code is safe for production. It's important to understand this behavior to effectively work with React rather than against it. Note that this double invocation does not occur in production environments. #React #ReactJS #JavaScript #useEffect #ReactHooks #FrontendDevelopment #WebDevelopment #StrictMode #CleanCode #SoftwareEngineering #DeveloperMindset

Sometimes, a component is the wrong tool for the job. If you need to perform low-level DOM manipulation — like automatically focusing an input or adding a tooltip. Instead of cluttering your component logic with refs and onMounted hooks, you can encapsulate that behavior in a directive like v-focus or v-tooltip. It keeps your template clean: <input v-focus /> And the logic is reusable across your entire app without the overhead of a full component instance. ☺️🤖 #vuejs #frontend #javascript #webdev #codingtips

Hydration mismatch is a common issue in React & Next.js when the Server and Client render different outputs. It’s usually caused by: • Browser-only APIs (window, localStorage) • Dynamic values (Math.random(), Date) • Client-only conditional rendering The fix? → Keep the first render consistent → Move client-only logic into useEffect #NextJS #ReactJS #Frontend #WebDevelopment #JavaScript

Strict Mode in React.js In this quick video, I break down: → What actually checks for (double renders, unsafe side effects, deprecated APIs) → Why useEffect/cleanup runs multiple times on purpose → How it helps you write future-proof code for React 19+ → Best practices so you stop fighting it and start using it Perfect for React devs tired of mystery double renders. Watch + drop a comment: Have you embraced Strict Mode yet, or are you still disabling it? 👇 #ReactJS #ReactStrictMode #FrontendDevelopment #JavaScript #WebDevelopment #ReactHooks #React19 #CodingTips

Today I finally understood how React works behind the scenes, and it made everything click: 🔹 Virtual DOM keeps a lightweight UI copy 🔹 Reconciliation compares changes efficiently 🔹 Fiber schedules and prioritizes rendering work 🔹 React DOM updates only the required parts of the real DOM 📌 Key takeaway: React doesn’t re-render the whole page — it calculates minimal changes and updates only what’s needed, making apps fast and smooth. Understanding the fundamentals makes React feel less like magic and more like logic 💙 #ReactJS #FrontendDevelopment #LearningInPublic #JavaScript #Hitesh Choudhary