Shadab Alam Khan’s Post

🚀 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

🚀 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

𝐃𝐚𝐲 𝟒 𝐨𝐟 𝐮𝐧𝐟𝐨𝐥𝐝𝐢𝐧𝐠 𝟙𝟝 𝐦𝐚𝐣𝐨𝐫 𝐜𝐨𝐧𝐜𝐞𝐩𝐭𝐬 𝐨𝐟 𝐑𝐞𝐚𝐜𝐭 One of the main reasons we use React is that we don’t manually interact with the DOM. React manages updates efficiently on our behalf. Instead of directly re-rendering the real DOM, React uses the 𝐕𝐢𝐫𝐭𝐮𝐚𝐥 𝐃𝐎𝐌 for better performance. React provides special functions called 𝐇𝐨𝐨𝐤𝐬 that control component behavior and DOM interaction. One important hook is 𝐮𝐬𝐞𝐒𝐭𝐚𝐭𝐞. It is used to store and manage data (state) inside a component. When the state value changes, React automatically re-renders the component and updates only the necessary parts of the DOM. Learning one concept at a time to build a strong foundation in React. #ReactJS #WebDevelopment #LearningInPublic #ReactHooks #VirtualDOM #Frontend #JavaScript

🚀 Day 897 of #900DaysOfCode ⚛️ Understanding the Virtual DOM in React In today’s post, I’ve explained what the Virtual DOM is and why React uses it. You’ll understand: - What the Virtual DOM actually represents - How React compares changes (diffing) - Why updates become faster and more efficient - How it improves performance and user experience This concept often feels confusing at first, but once it clicks, a lot of React internals start making sense. 👇 Was Virtual DOM confusing for you when you started with React? #Day897 #learningoftheday #900daysofcodingchallenge #FrontendDevelopment #WebDevelopment #JavaScript #React #CodingCommunity #VirtualDOM

I’ve had a lot of people ask how React rendering actually works. So I recorded a short video where I walk through it visually. No code. No theory overload. Just a clear, step-by-step view of what happens when React renders and re-renders a component. If rendering has ever felt confusing or “magical,” this video should make it click. Watch the video and let me know: What part of React rendering was unclear before this? Connect with me to talk modern frontend and React workflows: Shivam Kori #React #ReactJS #FrontendDevelopment #WebDevelopment #JavaScript #LearningInPublic #DeveloperEducation #BuildInPublic

Day 18 Topic:State and Usestate Post:Managing UI changes Understanding State & useState is a game-changer in React. State helps your UI become dynamic, responsive, and interactive by updating the interface automatically when data changes. With useState, managing UI changes becomes simple, clean, and efficient. This concept is the backbone of modern React applications. #ReactJS #ReactLearning #ReactHooks #useState #StateManagement #FrontendDevelopment #JavaScript #WebDevelopment #MERNStack #UIDevelopment #LearnReact #CodeNewbie #DevJourney #100DaysOfCode

💡 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

Why useEffect feels unpredictable (but isn’t) Most frustration with useEffect comes from three JavaScript behaviors: 1️⃣ Objects are compared by reference New object → new reference → effect runs again 2️⃣ Functions close over values If you don’t understand closures, dependency arrays feel confusing 3️⃣ State updates are scheduled They don’t run immediately, they’re batched None of this is React magic. It’s "JavaScript". When JS fundamentals are clear, useEffect becomes boring. And boring is good. #reactjs #javascript #frontend #softwareengineering #careeradvice

Most React bugs are not caused by React itself. They’re caused by how we think about components 🧠 Many developers treat components like “pages”. But React components are closer to pure functions: - UI = f (state, props) Here’s the practical rule I use 👇 If a component: - does more than one job - owns state it doesn’t really need - re-renders without a clear reason it’s usually a mental model problem, not a React one... React isn’t magic. It’s discipline in disguise. What React concept changed the way you write components? #React #Frontend #WebDevelopment #JavaScript #CleanCode

🔄 Understanding React’s useState: the core of reactive programming useState is the Hook that allows components to automatically react to state changes. Instead of manually updating the DOM, you simply change the state — and React handles the UI updates. Key takeaways: useState returns the current state value and a setter function State should never be mutated directly When state changes, all dependent components re-render automatically If the new state depends on the previous one, always use the functional update pattern For expensive initial values, use lazy initialization This is what makes React so powerful: 👉 you focus on what changes, not how to update the UI. That’s reactive programming in action 🚀 #React #ReactJS #Frontend #FrontendDevelopment #JavaScript #WebDevelopment #Hooks #useState #ReactiveProgramming #SoftwareEngineering