How to Create Custom Hooks in React with TypeScript

🧠 Lately, I’ve been diving deeper into React performance optimization, and it’s been a great reminder that small tweaks can make a big difference. One thing I’ve learned: even minor changes in how components render can significantly improve load times, especially in large-scale apps. For example, using React. memo wisely and managing state efficiently can reduce unnecessary re-renders and improve user experience. I enjoy exploring these micro-improvements because they turn good applications into great ones, smooth, responsive, and scalable. 💡 Continuous learning is the secret ingredient behind every clean, fast, and maintainable application. What’s a recent optimization or coding trick that made your workflow better? 👇 #ReactJS #FullStackDeveloper #PerformanceOptimization #WebDevelopment #CleanCode #LearningInTech #TechCommunity

🚀 𝟱 𝗥𝗲𝗮𝗰𝘁 𝗦𝗲𝗰𝗿𝗲𝘁𝘀 𝗘𝘃𝗲𝗿𝘆 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 𝗦𝗵𝗼𝘂𝗹𝗱 𝗞𝗻𝗼𝘄 If you’ve been building React apps for a while, you probably know the basics — components, props, and hooks. But the real growth starts when you go beyond that — when you start thinking about performance, clean code, and scalability. ⚛️ In this post, I’m breaking down 5 practical React tricks that’ll instantly level up 𝗵𝗼𝘄 𝘆𝗼𝘂 𝘄𝗿𝗶𝘁𝗲 𝗮𝗻𝗱 𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲 𝘆𝗼𝘂𝗿 𝗮𝗽𝗽𝘀: 💡 1️⃣ 𝗢𝗽𝘁𝗶𝗺𝗶𝘇𝗲 𝗥𝗲-𝗿𝗲𝗻𝗱𝗲𝗿𝘀 — Learn how React.memo, useCallback, and useMemo can prevent unnecessary updates and make your UI buttery smooth. ⚙️ 2️⃣ 𝗦𝗺𝗮𝗿𝘁 𝗦𝘁𝗮𝘁𝗲 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁 — Stop prop drilling and start using Context API or lightweight libraries like Zustand or Jotai for better state handling. 🎯 3️⃣ 𝗖𝘂𝘀𝘁𝗼𝗺 𝗛𝗼𝗼𝗸𝘀 — Reuse logic like a pro. Move repetitive code (fetching, validation, etc.) into reusable custom hooks. ⚡ 4️⃣ 𝗟𝗮𝘇𝘆 𝗟𝗼𝗮𝗱𝗶𝗻𝗴 + 𝗖𝗼𝗱𝗲 𝗦𝗽𝗹𝗶𝘁𝘁𝗶𝗻𝗴 — Improve load times using React.lazy and Suspense to load components only when needed. 🧩 5️⃣ 𝗘𝗿𝗿𝗼𝗿 𝗕𝗼𝘂𝗻𝗱𝗮𝗿𝗶𝗲𝘀 — Catch crashes gracefully and keep your UI stable even when things go wrong. These small tweaks lead to massive improvements in performance, maintainability, and developer experience. 🔥 𝑆𝑎𝑣𝑒 𝑡ℎ𝑖𝑠 𝑝𝑜𝑠𝑡 𝑖𝑓 𝑦𝑜𝑢’𝑟𝑒 𝑠𝑒𝑟𝑖𝑜𝑢𝑠 𝑎𝑏𝑜𝑢𝑡 𝑏𝑒𝑐𝑜𝑚𝑖𝑛𝑔 𝑎 𝑠𝑡𝑟𝑜𝑛𝑔𝑒𝑟 𝑅𝑒𝑎𝑐𝑡 𝑑𝑒𝑣𝑒𝑙𝑜𝑝𝑒𝑟. 💬 Which of these have you already mastered? Or which one do you want me to deep dive into next? 👇 #ReactJS #FrontendDevelopment #WebDevelopment #CleanCode #Learning

🚀 Rendering Lists with Array.map() (React Development) The `Array.map()` method is commonly used to iterate over an array and transform each element into a React component. Inside the `map` function, you create the JSX for each item in the list. Remember to add the `key` prop to the outermost element returned by the `map` function. The `key` prop should ideally be a unique identifier from your data (e.g., an ID from a database). 🌟 Smart learning > Hard working 🚀 Accelerate your tech journey — 10k+ bite-sized concepts, 4k+ deep-dive articles, 12k+ quizzes! 📱 Get the app: https://lnkd.in/gefySfsc 💻 Explore more: https://techielearn.in #ReactJS #Frontend #WebDev #React #professional #career #development

“My React app was fast... until it wasn’t.” A few months ago, I built a dashboard that looked great — until users started complaining: “The page freezes when I type.” “Filters are slow.” That’s when I realized — I wasn’t writing slow code, I was writing unoptimized code. Here’s what I learned about React optimization the hard way 👇 1️⃣ useMemo & useCallback — My performance saviors One of my components was recalculating an expensive array filter on every keystroke. A simple useMemo around it reduced renders from 30+ to just 1. Lesson? Don’t let React “rethink” what it already knows. 2️⃣ React.memo — The silent hero My “UserCard” component kept re-rendering even when data didn’t change. I wrapped it with React.memo — boom, 60% faster UI updates. Sometimes the best optimization is just not doing extra work. 3️⃣ Lazy Loading — Don’t serve the whole buffet at once 🍽️ Why load the entire app when a user just opened the homepage? Code splitting with React.lazy() made my initial load time 40% faster. 4️⃣ List Virtualization — Rendering smartly, not heavily I had 5,000+ rows in a table. After using react-window, it only rendered what’s visible on screen. Feels like magic — but it’s just smart engineering. 5️⃣ Small things matter too Inline functions, unstable keys, too many re-renders — these small mistakes add up like compound interest (but in a bad way 😅). At the end of the day, optimization isn’t about “making React faster.” It’s about making your user’s experience smoother. If you’re learning React like me — focus not just on “how to build”, but also on “how to make it feel effortless”. I share practical React learnings, interview insights & real project experiences here. If that’s your vibe, hit follow — let’s grow together as smarter devs 👨💻💬 #ReactJS #WebDevelopment #Frontend #Performance #JavaScript #Optimization #LearningJourney #ReactHooks

𝗥𝗲𝗮𝗰𝘁 𝗖𝗼𝗺𝗽𝗶𝗹𝗲𝗿 𝘃𝟭.𝟬 𝗶𝘀 𝗮𝘃𝗮𝗶𝗹𝗮𝗯𝗹𝗲 𝘁𝗼𝗱𝗮𝘆 I’m excited to share that the team behind React has officially released 𝗥𝗲𝗮𝗰𝘁 𝗖𝗼𝗺𝗽𝗶𝗹𝗲𝗿 𝘃𝟭.𝟬 Here’s what this means for React developers and teams: 🔹 It’s a build-time tool that automatically optimizes your React (and React Native) apps by analysing component data-flows, mutability, and inserting memoization where needed — so you don’t always have to wrap things manually with 𝐮𝐬𝐞𝐌𝐞𝐦𝐨, 𝐮𝐬𝐞𝐂𝐚𝐥𝐥𝐛𝐚𝐜𝐤, or 𝐑𝐞𝐚𝐜𝐭.𝐦𝐞𝐦𝐨. 🔸 The compiler has been battle-tested at scale (for example in apps at Meta) and is now production-ready. 🔹 It’s compatible with React 17+; new apps built with frameworks like Next.js, Vite, or Expo can start with it enabled out-of‐the‐box. 🔸 For existing codebases, there’s a gradual adoption guide, so you can introduce the compiler step-by-step without disrupting current workflows. 🔍 Why this matters: Performance-related code (optimizing renders, avoiding unnecessary re-renders) has been a manual burden in many React apps. With this compiler, a lot of that work becomes automated — freeing you to focus more on features & UX, less on boilerplate optimisation. If you’re working on React or React Native apps — whether greenfield or legacy — it’s definitely worth evaluating. Happy to connect & discuss how teams are adopting this! Official Docs link: https://lnkd.in/gTEmiyQU Github link: https://lnkd.in/gWvJMp8n Blogs: https://lnkd.in/g5PpFF_v Connect me: https://nitingumber.me #React #WebDev #Frontend #Performance #ReactCompiler

React.js — From Basics to Real Projects ⚛️ 🚀 If you’re starting your React journey or just want to organize what you already know, this guide is for you 💡 It covers Some the core concepts every React developer needs to master before building real-world apps 👇 📘 What’s Inside: React Components & jsx Props & State ⚙️ React Hooks React Router (Navigation) 🗺️ Redux for State Management 🧠 Performance Optimization & Deployment ⚡ React Task Manager App ✅ ♻️ Repost to help others learn. 🔔 Follow Hossam Hamad for more content on React, Frontend & AI. #ReactJS #FrontendDevelopment #WebDevelopment #JavaScript #Redux #ReactHooks #ReactRouter #TechCareer

I once made React slower… by trying to make it “better.” You know that sinking feeling when your app should be lightning fast, but it crawls like it’s running on dial-up?   Yeah. That was me, proudly “optimizing.” Turns out, I wasn’t writing bad code. I was writing overconfident code. Here are the mistakes that humbled me (and maybe they’ll save you some pain too 👇): 1️⃣ Re-render city One prop change, and my whole component tree started a re-render party. Ignored React.memo() and dependency arrays, my CPU fan still hasn’t forgiven me. 2️⃣ Global state gone wild Everything lived in global state, even stuff that had no business being there. It was like a group chat where every component knew everyone’s drama. 3️⃣ The “clean” component trap I built “elegant” abstractions that even I couldn’t understand later. When a teammate asked, “What does this do?” I just stared at the screen. 4️⃣ Accessibility? Never heard of her. My app was fast, shiny, and... completely unusable for some people. That’s when I learned: performance is cool, but inclusion is cooler. 5️⃣ Forgotten cleanup Event listeners and intervals everywhere, like tabs I never closed. Now, useEffect cleanup is my love language. After breaking enough things, I stopped chasing perfect React and started chasing peace of mind. Because the best code isn’t the cleverest, It’s the one your future self can read without swearing. Save this before your next React refactor, your laptop (and sanity) will thank you. --------- I am Syed Khurram Ali I help startups and businesses with: ➡ Building scalable web & mobile applications using MERN, React Native & Flutter ➡ End-to-end development, from UI/UX design to secure backend systems ➡ Cloud deployment & performance optimization with AWS and MongoDB 📩 DM or visit khurramdev.com  to discuss your next project. #FullStackDeveloper #MERNStack #ReactJS #NodeJS

Want to take your React code from working to wonderful? Here are some battle-tested tips to help you write cleaner, scalable, and more maintainable React apps: Use types: - Prevent bugs before they happen by making your components type-safe and predictable. Use helpers/utils: - Keep logic out of components and make it reusable with utility functions. Learn to use props properly: - Pass only what’s needed, and use prop-types or types to avoid confusion and bloated components. One file = One component: - Makes your project structure clean, manageable, and easier to debug or refactor. Use a 404 component & route: - Helps catch incorrect URLs and improves the user experience in single-page apps. Avoid inline functions: - Reduces unnecessary re-renders and makes components more optimized and readable. Fetch data progressively: - Improves loading speed and avoids blocking UI by loading data in steps. Use unique values for `key` props: - Prevents rendering issues when mapping through lists, helping React track elements correctly. Use constants: - Keeps your values consistent, avoids magic strings, and makes code easier to update. Small changes → Big impact. React is powerful, but clean code makes it unstoppable. #JavaScript #learningoftheday #interview #codingchallenge #webdevelopment #react #next #reactnative #frontenddevelopment #codingtips #codingchallenge #codingcommunity #CleanCode #WebDevTips #CodeQuality #ScalableApps #MaintainableCode #learn #frontend

🚀 The Unmounting Phase of a React Component The unmounting phase is the final phase of a React component's lifecycle, when it is being removed from the DOM. The only method involved in this phase is `componentWillUnmount`. This method is used to perform any necessary cleanup, such as invalidating timers or canceling network requests. Failing to clean up resources can lead to memory leaks or other unexpected behavior. 👉 Learn smarter — 10,000+ concise concepts, 4,000+ articles, and 12,000+ topic-wise quiz questions, personalized by AI. Dive in now! 📱 Get the app: https://lnkd.in/gefySfsc 🌐 Explore more on our website. 🌐 Website : https://techielearn.in #ReactJS #Frontend #WebDev #React #professional #career #development

💻 React Performance Optimization (Real-World Focus) Weekend Vibes = Learning Mode ON 🚀 As React developers, we often focus on building new components, pages, or features. But real growth happens when we pause and ask: 👉 “Is my app performing efficiently?” This weekend, I’m diving deep into React performance optimization, not just from theory, but through real-world debugging and testing. 🔍 What I’m exploring: 1.React Profiler – to track which components re-render unnecessarily 2.React.memo() and useCallback() – preventing wasted re-renders 3.Code Splitting & Lazy Loading – improving initial load time 4.Virtualization – handling large data lists smoothly 5.Debouncing API calls – reducing unwanted network requests ⚡ Key Takeaway: Performance isn’t about writing less code it’s about writing smarter code. Small optimizations can drastically improve the user experience and overall app speed. Consistency + curiosity = growth. Let’s keep learning, breaking, and improving our React apps one weekend at a time 💪 #ReactJS #WebDevelopment #FrontendPerformance #ReactOptimization #CodingJourney #LearningInPublic #JavaScript #WeekendLearning #BuildInPublic #DeveloperLife #WomenInTech