Aman Uniyal’s Post

🚀 Understanding Functional vs Class Components in React — Simplified! In React, everything revolves around components. But there are two types: 👉 Functional Components 👉 Class Components So… which one should you use? 💡 What are Functional Components? 👉 Simple JavaScript functions that return JSX function Greeting() { return <h1>Hello, React!</h1>; } ✅ Cleaner syntax ✅ Easier to read ✅ Uses Hooks (useState, useEffect) ✅ Preferred in modern React 💡 What are Class Components? 👉 ES6 classes that extend React.Component class Greeting extends React.Component { render() { return <h1>Hello, React!</h1>; } } 👉 Uses lifecycle methods instead of hooks ⚙️ Key Differences 🔹 Functional: Uses Hooks Less boilerplate Easier to maintain 🔹 Class: Uses lifecycle methods More complex syntax Harder to manage state 🧠 Real-world use cases ✔ Functional Components: Modern applications Scalable projects Cleaner architecture ✔ Class Components: Legacy codebases Older React apps 🔥 Best Practices (Most developers miss this!) ✅ Prefer functional components in new projects ✅ Use hooks instead of lifecycle methods ✅ Keep components small and reusable ❌ Don’t mix class and functional patterns unnecessarily ⚠️ Common Mistake 👉 Overcomplicating simple components with classes // ❌ Overkill class Button extends React.Component { render() { return <button>Click</button>; } } 👉 Use functional instead 💬 Pro Insight React today is built around: 👉 Functions + Hooks, not classes 📌 Save this post & follow for more deep frontend insights! 📅 Day 7/100 #ReactJS #FrontendDevelopment #JavaScript #ReactHooks #WebDevelopment #SoftwareEngineering #100DaysOfCode 🚀

One thing I’ve consistently found frustrating in the early phase of development is setup. On the frontend side, we have powerful CLI tools that generate clean boilerplate in seconds. It’s fast, standardized, and developer-friendly. But on the backend—especially when working with #ExpressJS—the experience often feels outdated and repetitive. Setting up structure, routing, and basic configurations can take more time than it should. To simplify this, I’ve been working on a small tool: https://lnkd.in/d2rUUnYy It’s designed to make Express project setup quicker and more intuitive, so you can focus more on building rather than configuring. If you’re working with Express, I’d really appreciate your feedback. #WebDevelopment #BackendDevelopment #NodeJS #JavaScript #DeveloperTools #CLI #OpenSource #SoftwareDevelopment

⚛️ 𝗜𝗺𝗽𝗿𝗼𝘃𝗶𝗻𝗴 𝗥𝗲𝗮𝗰𝘁 𝗣𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲 — 𝗨𝘀𝗶𝗻𝗴 𝗖𝗼𝗱𝗲 𝗦𝗽𝗹𝗶𝘁𝘁𝗶𝗻𝗴 As React applications grow, bundle size increases — which directly impacts initial load time. Common problem: • large JS bundle • slow first load • unnecessary code loaded upfront A better production approach is 𝗖𝗼𝗱𝗲 𝗦𝗽𝗹𝗶𝘁𝘁𝗶𝗻𝗴. ❌ 𝗪𝗶𝘁𝗵𝗼𝘂𝘁 𝗖𝗼𝗱𝗲 𝗦𝗽𝗹𝗶𝘁𝘁𝗶𝗻𝗴 𝘪𝘮𝘱𝘰𝘳𝘵 𝘋𝘢𝘴𝘩𝘣𝘰𝘢𝘳𝘥 𝘧𝘳𝘰𝘮 "./𝘋𝘢𝘴𝘩𝘣𝘰𝘢𝘳𝘥"; 𝘪𝘮𝘱𝘰𝘳𝘵 𝘙𝘦𝘱𝘰𝘳𝘵𝘴 𝘧𝘳𝘰𝘮 "./𝘙𝘦𝘱𝘰𝘳𝘵𝘴"; 𝘪𝘮𝘱𝘰𝘳𝘵 𝘚𝘦𝘵𝘵𝘪𝘯𝘨𝘴 𝘧𝘳𝘰𝘮 "./𝘚𝘦𝘵𝘵𝘪𝘯𝘨𝘴"; All components load upfront — even if not used immediately. ❌ 𝗪𝗶𝘁𝗵𝗼𝘂𝘁 𝗖𝗼𝗱𝗲 𝗦𝗽𝗹𝗶𝘁𝘁𝗶𝗻𝗴 𝘪𝘮𝘱𝘰𝘳𝘵 { 𝘭𝘢𝘻𝘺, 𝘚𝘶𝘴𝘱𝘦𝘯𝘴𝘦 } 𝘧𝘳𝘰𝘮 "𝘳𝘦𝘢𝘤𝘵"; 𝘤𝘰𝘯𝘴𝘵 𝘋𝘢𝘴𝘩𝘣𝘰𝘢𝘳𝘥 = 𝘭𝘢𝘻𝘺(() => 𝘪𝘮𝘱𝘰𝘳𝘵("./𝘋𝘢𝘴𝘩𝘣𝘰𝘢𝘳𝘥")); 𝘤𝘰𝘯𝘴𝘵 𝘙𝘦𝘱𝘰𝘳𝘵𝘴 = 𝘭𝘢𝘻𝘺(() => 𝘪𝘮𝘱𝘰𝘳𝘵("./𝘙𝘦𝘱𝘰𝘳𝘵𝘴")); 𝘧𝘶𝘯𝘤𝘵𝘪𝘰𝘯 𝘈𝘱𝘱() {   𝘳𝘦𝘵𝘶𝘳𝘯 (     <𝘚𝘶𝘴𝘱𝘦𝘯𝘴𝘦 𝘧𝘢𝘭𝘭𝘣𝘢𝘤𝘬={<𝘱>𝘓𝘰𝘢𝘥𝘪𝘯𝘨...</𝘱>}>       <𝘋𝘢𝘴𝘩𝘣𝘰𝘢𝘳𝘥 />       <𝘙𝘦𝘱𝘰𝘳𝘵𝘴 />     </𝘚𝘶𝘴𝘱𝘦𝘯𝘴𝘦>   ); } Now components load 𝗼𝗻𝗹𝘆 𝘄𝗵𝗲𝗻 𝗻𝗲𝗲𝗱𝗲𝗱. 📌 Where this helps most: • large dashboards • admin panels • multi-page apps • heavy third-party libraries 📌 𝗣𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻 𝗕𝗲𝗻𝗲𝗳𝗶𝘁𝘀: • faster initial load • reduced bundle size • better performance • improved user experience 📌 𝗕𝗲𝘀𝘁 𝗣𝗿𝗮𝗰𝘁𝗶𝗰𝗲𝘀: • split at route level • avoid over-splitting • use meaningful fallbacks • monitor bundle size Loading everything at once works — but splitting wisely improves performance significantly. 💬 Curious — do you apply code splitting at route level or component level? #ReactJS #CodeSplitting #Performance #FrontendDevelopment #JavaScript #WebDevelopment #SoftwareEngineering #Optimization

🚀 Custom Hooks in React — Write Once, Reuse Everywhere As your React app grows… 👉 Logic starts repeating 👉 Components become messy 👉 Code becomes harder to maintain That’s where Custom Hooks come in. 💡 What are Custom Hooks? Custom Hooks are reusable functions that let you extract and share logic between components. 👉 Just like built-in hooks—but created by you ⚙️ Basic Example function useCounter() { const [count, setCount] = useState(0); const increment = () => setCount(c => c + 1); return { count, increment }; } 👉 Use it anywhere: const { count, increment } = useCounter(); 🧠 How it works ✔ Uses existing hooks (useState, useEffect, etc.) ✔ Encapsulates logic ✔ Returns reusable values/functions 🧩 Real-world use cases ✔ API fetching logic (useFetch) ✔ Form handling (useForm) ✔ Debouncing inputs (useDebounce) ✔ Authentication logic (useAuth) 🔥 Why Custom Hooks Matter 👉 Without them: ❌ Duplicate logic across components ❌ Hard to maintain code 👉 With them: ✅ Clean components ✅ Reusable logic ✅ Better scalability 🔥 Best Practices (Most developers miss this!) ✅ Prefix with “use” (important for React rules) ✅ Keep hooks focused on one responsibility ✅ Avoid tightly coupling with UI ❌ Don’t over-abstract too early ⚠️ Common Mistake // ❌ Mixing UI + logic function useData() { return <div>Data</div>; } 👉 Hooks should return data/logic—not JSX 💬 Pro Insight (Senior Thinking) 👉 Components = UI 👉 Hooks = Logic 👉 Clean separation = scalable architecture 📌 Save this post & follow for more deep frontend insights! 📅 Day 18/100 #ReactJS #FrontendDevelopment #JavaScript #ReactHooks #CodeQuality #SoftwareEngineering #100DaysOfCode 🚀

💡 What Actually Happens When You Click a Button on a Website? At first, I thought it was simple — just a click. But here’s what actually happens: 1️⃣ The click is captured by JavaScript (Frontend) 2️⃣ An API request is sent to the server 3️⃣ The backend (Node.js) processes the request 4️⃣ The database is accessed if needed 5️⃣ A response is sent back 6️⃣ The UI updates instantly — without reloading All of this happens in milliseconds. This made me realize: Web development isn’t just about writing code — it’s about understanding how everything connects and flows together. Still learning, still building 🚀 #WebDevelopment #JavaScript #ReactJS #NodeJS #LearningInPublic

Automate Inline Styles in React Native with CLI! check here 👉🏻 https://lnkd.in/gmzUt9uV In this video, I introduce my custom CLI tool rn-style-converter, designed to solve a common problem in React Native development — managing inline styles. 💡 Instead of manually moving inline styles into StyleSheet, this tool does it automatically using AST parsing. It scans your code, extracts inline styles, and converts them into clean "StyleSheet.create()" structure. Features: - Convert inline styles automatically - Supports ".js" and ".tsx" files - Works for both single file & entire project - Saves time and improves code maintainability Usage: npx rn-style-converter src 🎯 Why this tool? Inline styles can affect performance and make code harder to manage in large projects. This CLI helps you clean up your codebase quickly and efficiently. Current limitation: - Works best for fully inline styles (Upcoming updates will support more complex cases) --- Built with: - Node.js - AST Parsing (Babel) --- If you like this tool: - Give it a star on GitHub - Share with your developer friends --- #ReactNative #JavaScript #CLI #Automation #Frontend #CodingTools #DeveloperTools #OpenSource

Building Scalable Interfaces with React: Hooks & Components Modern web development demands flexibility, reusability, and clean architecture—and that’s exactly where React shines. At the heart of React lie two powerful concepts: Components and Hooks. • Components Components allow developers to break down complex user interfaces into smaller, reusable pieces. Instead of repeating code, you create modular building blocks that can be reused across your application. This not only improves maintainability but also makes your codebase more organized and scalable. • Hooks Hooks revolutionized how we manage state and lifecycle logic in React. With features like useState, useEffect, and custom hooks, developers can write cleaner and more concise code—without relying on class components. Hooks promote better separation of concerns and enable logic reuse across different components. Why it matters? By combining components and hooks, developers can: • Build dynamic and responsive UIs; • Reduce code duplication; • Improve readability and maintainability; • Scale applications more efficiently; React’s approach empowers developers to focus on what the UI should do, rather than how to manage complexity behind the scenes. Whether you’re building small features or large-scale applications, mastering components and hooks is essential for writing modern, efficient React code. It's a beautiful day for coding! #ReactJS #WebDevelopment #Frontend #JavaScript #SoftwareEngineering