Naim Latifi’s Post

Most React developers accidentally cause unnecessary re-renders. And they don’t realize it. They think only the component that updates will render again. But when a 𝗽𝗮𝗿𝗲𝗻𝘁 𝗰𝗼𝗺𝗽𝗼𝗻𝗲𝗻𝘁 𝗿𝗲-𝗿𝗲𝗻𝗱𝗲𝗿𝘀... Every child component re-renders too. Even if their props didn’t change. This is why React provides performance tools like: • React.memo() • useMemo() • useCallback() Understanding this can prevent a lot of hidden performance issues. Have you ever debugged unnecessary re-renders in React? #React #JavaScript #Frontend #WebDevelopment

🚀 Day 6 of Building React Projects Today I built a Notes Application using React.js. This project allows users to create, edit, and delete notes while saving the data in the browser using LocalStorage. ✨ Features: • Add new notes • Edit existing notes • Delete notes • Save notes in LocalStorage • Simple and responsive UI 🛠 Tech Stack: React.js JavaScript HTML CSS 🌐 Live Demo: https://lnkd.in/dVWH9WBf 💻 Source Code: https://lnkd.in/ddGADSFQ #ReactJS #JavaScript #FrontendDevelopment #WebDevelopment #LearningInPublic

Most React developers have written this at some point: ```js useEffect(() => { fetchUserData(userId); }, []); ``` It works — until it doesn't. The problem? You're telling React "run this once" but your effect actually depends on userId. When userId changes, your UI goes stale and you get bugs that are incredibly hard to trace. The fix is simple: ```js useEffect(() => { fetchUserData(userId); }, [userId]); ``` Always ask yourself: "What values does this effect read from the component scope?" Every one of them belongs in the dependency array. ESLint's exhaustive-deps rule will catch these automatically. If you're not using it, turn it on today. Small habits like this are what separate good developers from great ones. #ReactJS #JavaScript #WebDevelopment #Frontend

Most developers think React components only re-render when props change. I used to believe the same — until I learned something surprising. A component re-renders whenever its parent re-renders, even if the props stay exactly the same. That means a small state update in a parent component can trigger multiple unnecessary renders in child components. One simple optimization that helped me: Using React.memo to prevent unnecessary re-renders. It’s a small change, but in large applications it can improve performance significantly. Still exploring more about how React’s rendering works under the hood. Curious — what’s one React concept that took you a long time to fully understand? #ReactJS #FrontendDevelopment #WebDevelopment #JavaScript #SoftwareEngineering

To every developer 𝙘𝙤𝙣𝙛𝙪𝙨𝙚𝙙 between 𝗡𝗲𝘅𝘁.𝗷𝘀 and 𝗥𝗲𝗮𝗰𝘁, I have a simple way to think about it: • 𝗥𝗲𝗮𝗰𝘁 𝗶𝘀 𝗷𝘂𝘀𝘁 𝘁𝗵𝗲 𝗨𝗜 𝗹𝗮𝘆𝗲𝗿: It’s a library for building interfaces. You handle 𝙧𝙤𝙪𝙩𝙞𝙣𝙜, 𝙨𝙩𝙧𝙪𝙘𝙩𝙪𝙧𝙚, and 𝙨𝙚𝙩𝙪𝙥 𝙮𝙤𝙪𝙧𝙨𝙚𝙡𝙛. • 𝗡𝗲𝘅𝘁.𝗷𝘀 𝗶𝘀 𝗮 𝗰𝗼𝗺𝗽𝗹𝗲𝘁𝗲 𝗳𝗿𝗮𝗺𝗲𝘄𝗼𝗿𝗸: It builds on React and gives you everything out of the box. 𝙍𝙤𝙪𝙩𝙞𝙣𝙜, 𝙎𝙎𝙍, 𝙎𝙀𝙊, and 𝙗𝙚𝙩𝙩𝙚𝙧 𝙥𝙚𝙧𝙛𝙤𝙧𝙢𝙖𝙣𝙘𝙚. • 𝗧𝗵𝗶𝗻𝗸 𝗶𝗻 𝘁𝗲𝗿𝗺𝘀 𝗼𝗳 𝘂𝘀𝗲 𝗰𝗮𝘀𝗲: React gives you 𝗳𝗿𝗲𝗲𝗱𝗼𝗺. Next.js gives you 𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲 and 𝘀𝗽𝗲𝗲𝗱 in production. That’s the real difference. My simple rule: – 𝗦𝗺𝗮𝗹𝗹 𝗮𝗽𝗽𝘀 → 𝙍𝙚𝙖𝙘𝙩 – 𝗣𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻 𝗮𝗽𝗽𝘀 → 𝙉𝙚𝙭𝙩.𝙟𝙨 Choose based on what you’re building, not just what’s popular. 𝙒𝙝𝙖𝙩 𝙙𝙤 𝙮𝙤𝙪 𝙪𝙨𝙚 — 𝙍𝙚𝙖𝙘𝙩 𝙤𝙧 𝙉𝙚𝙭𝙩.𝙟𝙨? 👇 #SoftwareEngineering #WebDevelopment #ReactJS #NextJS #FrontendDevelopment #JavaScript #FullStackDeveloper #Programming #TechCareers #BuildInPublic #fblifestyle #TechTips #code231

🚀 useState vs useReducer — When to use what in React? If you’ve worked with React, you’ve probably used useState a lot. But at some point, things start getting messy… and that’s where useReducer steps in. Let’s break it down 👇 🔹 useState Best for simple state Easy to read and quick to implement Great for inputs, toggles, counters Example: const [count, setCount] = useState(0); 👉 Use it when your state logic is straightforward. 🔹 useReducer Best for complex state logic Handles multiple related state updates Keeps logic predictable and organized Example: const [state, dispatch] = useReducer(reducer, initialState); 👉 Use it when: State depends on previous state You have multiple sub-values Logic gets complicated 💡 Think of it this way: useState = Simple & quick 🟢 useReducer = Structured & scalable 🔵 ✨ Pro Tip: If you find yourself writing too many setState calls or nested updates… it’s probably time to switch to useReducer. #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment #CodingTips #ReactHooks

🚀 Day 4 of Building React Projects Today I built a Background Changer Application using React.js. This project allows users to change the background color of the webpage dynamically with a single click. ✨ Features: • Change background color instantly • Interactive buttons for different colors • Simple and clean UI 🛠 Tech Stack: React.js JavaScript HTML CSS 🌐 Live Demo: https://lnkd.in/daCYux9G 💻 Source Code: https://lnkd.in/dEJDyd9G #ReactJS #JavaScript #FrontendDevelopment #WebDevelopment #LearningInPublic

10 React.js Concepts Every Frontend Developer Should Know React.js is one of the most widely used libraries for building modern and scalable user interfaces. Understanding its core concepts is essential for writing clean, maintainable, and efficient frontend applications. I created this infographic to highlight 10 important React concepts such as JSX, Components, Props, State, Hooks, React Router, Virtual DOM, and Performance Optimization. Mastering these fundamentals helps developers build better applications and grow as React developers. #ReactJS #FrontendDeveloper #WebDevelopment #JavaScript #ReactDeveloper

🚀 Day 1 of Building React Projects Today I built and deployed a Todo List Application using React.js. This project helped me practice React fundamentals like state management and component-based UI development. ✨ Features: • Add new tasks • Filter tasks (All / Completed / Pending) • Clean and simple UI • Dynamic task updates 🛠 Tech Stack: React.js JavaScript HTML CSS 🌐 Live Demo: https://lnkd.in/dDAU9E7r 💻 Source Code: https://lnkd.in/dup-W67U I’ll be building and sharing more React projects daily as part of my learning journey. #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment #ReactProjects #LearningInPublic

🚀 Day 2 of Building React Projects Today I built a Counter Application using React.js. This project helped me understand the useState Hook, which is used to manage state in functional components. ✨ Features: • Increase counter value • Decrease counter value • Reset counter 🛠 Tech Stack: React.js JavaScript HTML CSS 💻 Source Code: https://lnkd.in/dnEyi_ag Building small projects like this helps strengthen React fundamentals. #ReactJS #JavaScript #FrontendDevelopment #WebDevelopment