Master React Hooks for Simplified Code

⏱️ 𝗡𝗼𝗱𝗲.𝗷𝘀 𝗘𝘃𝗲𝗻𝘁 𝗟𝗼𝗼𝗽 — setTimeout 𝘃𝘀 setImmediate Many developers think setTimeout(fn, 0) runs immediately. But in Node.js, 𝗲𝘃𝗲𝗻𝘁 𝗹𝗼𝗼𝗽 𝗽𝗵𝗮𝘀𝗲𝘀 𝗱𝗲𝗰𝗶𝗱𝗲 𝘁𝗵𝗲 𝗿𝗲𝗮𝗹 𝗲𝘅𝗲𝗰𝘂𝘁𝗶𝗼𝗻 𝗼𝗿𝗱𝗲𝗿. Let’s understand the difference between setTimeout and setImmediate 👇 🔍 𝗖𝗼𝗿𝗲 𝗗𝗶𝗳𝗳𝗲𝗿𝗲𝗻𝗰𝗲 setTimeout(fn, 0) • Schedules callback in 𝗧𝗶𝗺𝗲𝗿𝘀 𝗣𝗵𝗮𝘀𝗲 • Executes 𝗮𝗳𝘁𝗲𝗿 𝘁𝗶𝗺𝗲𝗿 𝘁𝗵𝗿𝗲𝘀𝗵𝗼𝗹𝗱 𝗶𝘀 𝗿𝗲𝗮𝗰𝗵𝗲𝗱 • Not truly immediate setImmediate(fn) • Schedules callback in 𝗖𝗵𝗲𝗰𝗸 𝗣𝗵𝗮𝘀𝗲 • Executes 𝗿𝗶𝗴𝗵𝘁 𝗮𝗳𝘁𝗲𝗿 𝗣𝗼𝗹𝗹 𝗣𝗵𝗮𝘀𝗲 • Designed to run 𝘪𝘮𝘮𝘦𝘥𝘪𝘢𝘵𝘦𝘭𝘺 𝘢𝘧𝘵𝘦𝘳 𝘐/𝘖 🧠 Example: const fs = require('fs'); fs.readFile(__filename, () => {   setTimeout(() => {     console.log('timeout');   }, 0);   setImmediate(() => {     console.log('immediate');   }); }); ⚙️ 𝗪𝗵𝗮𝘁 𝗛𝗮𝗽𝗽𝗲𝗻𝘀 𝗜𝗻𝘁𝗲𝗿𝗻𝗮𝗹𝗹𝘆? 1. fs.readFile registers an 𝗜/𝗢 𝗼𝗽𝗲𝗿𝗮𝘁𝗶𝗼𝗻 2. When file read completes → callback enters 𝗣𝗼𝗹𝗹 𝗣𝗵𝗮𝘀𝗲 3. Inside callback:• setImmediate → scheduled in 𝗖𝗵𝗲𝗰𝗸 𝗣𝗵𝗮𝘀𝗲 • setTimeout(0) → scheduled in 𝗧𝗶𝗺𝗲𝗿𝘀 𝗣𝗵𝗮𝘀𝗲 4. The event loop continues… ➡ After Poll Phase → 𝗖𝗵𝗲𝗰𝗸 𝗣𝗵𝗮𝘀𝗲 𝗿𝘂𝗻𝘀 𝗳𝗶𝗿𝘀𝘁 ➡ Then next iteration → 𝗧𝗶𝗺𝗲𝗿𝘀 𝗣𝗵𝗮𝘀𝗲 𝗿𝘂𝗻𝘀 🏁 𝗢𝘂𝘁𝗽𝘂𝘁 immediate timeout And this order is 𝗰𝗼𝗻𝘀𝗶𝘀𝘁𝗲𝗻𝘁 𝗶𝗻 𝘁𝗵𝗶𝘀 𝘀𝗰𝗲𝗻𝗮𝗿𝗶𝗼 because: • setImmediate runs right after I/O (Check phase) • setTimeout waits for next Timers phase 𝗜𝗳 𝘁𝗵𝗶𝘀 𝗵𝗲𝗹𝗽𝗲𝗱 𝘆𝗼𝘂 𝘂𝗻𝗱𝗲𝗿𝘀𝘁𝗮𝗻𝗱 𝗡𝗼𝗱𝗲 𝗶𝗻𝘁𝗲𝗿𝗻𝗮𝗹𝘀 𝗯𝗲𝘁𝘁𝗲𝗿, 𝗹𝗲𝘁’𝘀 𝗰𝗼𝗻𝗻𝗲𝗰𝘁. 🤝 #NodeJS #JavaScript #EventLoop #Backend #AsyncProgramming #SystemDesign #Programming

🚀 Class Component vs Functional Component in React – What’s the Real Difference? When I started learning React, Class Components were everywhere. Today, Functional Components dominate most modern React codebases. Let’s break down the key differences 👇 ⸻ 🔹 1️⃣ Syntax & Structure Class Component • Uses ES6 class • Extends React.Component • Requires render() method Functional Component • Just a JavaScript function • Returns JSX directly • Cleaner and more readable ⸻ 🔹 2️⃣ State Management Class Component • Uses this.state • Updates with this.setState() Functional Component • Uses React Hooks like useState() • Simpler and more intuitive ⸻ 🔹 3️⃣ Lifecycle Methods Class Component • componentDidMount • componentDidUpdate • componentWillUnmount Functional Component • Uses useEffect() hook • Handles all lifecycle logic in one place ⸻ 🔹 4️⃣ Performance & Modern Best Practice • Functional Components + Hooks reduce boilerplate • Easier to test and reuse logic with custom hooks • Preferred in modern React development ⸻ 📌 My Observation: In most new projects, Functional Components are widely used. Class Components are mainly found in legacy applications. ⸻ 💬 Now I’m curious… 👉 Which one are you using in your current project? 👉 Are you still maintaining Class Components or fully moved to Functional Components? Let’s discuss in the comments 👇 #ReactJS #React #FrontendDevelopment #JavaScript #WebDevelopment #SoftwareEngineering #Frontend #Angular #Programming #WebDesign #ReactDeveloper #DeveloperCommunity

🚨 React Hooks Tip: Always Call Hooks at the Top Level! 🚨 If you're working with React hooks, here’s a golden rule you must follow: 👉 Only call hooks at the top level of your functional component or custom hook. Avoid calling hooks inside loops, conditions, or nested functions. But why is this so important? React relies on the order of hook calls to keep track of state and effects between renders. When hooks are conditionally called, the order changes and React gets confused — causing bugs, unexpected behavior, or warnings like: 🔴 "React Hook 'useEffect' is called conditionally." For example, calling useState inside an if block means sometimes it runs — sometimes it doesn’t. React can't reliably associate state with the correct hook call anymore. How to fix it? ✔️ Always call your hooks unconditionally at the top level. ✔️ Move your conditional logic inside the hook (e.g., inside useEffect). ✔️ When you need conditional hooks, consider creating custom hooks that handle those conditions internally. By following this simple rule, your React components will stay predictable and bug-free — making your codebase easier to maintain and scale. Happy coding! 💡⚛️ #ReactJS #JavaScript #WebDevelopment #Frontend #ProgrammingTips #SoftwareEngineering

𝗦𝗼𝘂𝗿𝗰𝗲 𝗠𝗮𝗽𝘀 𝗳𝗼𝗿 𝗝𝗮𝘃𝗮𝗦𝗰𝗿𝗶𝗽𝘁 𝗗𝗲𝗯𝘂𝗴𝗴𝗶𝗻𝗴 You use JavaScript to build applications. But debugging can be hard. Source maps make it easier. They help you find errors in your code. Source maps are files that map your minified code to your original code. This helps you debug your code. You can use source maps with Webpack, Babel, and other tools. Here's how source maps work: - They map your minified code to your original code - They help you find errors in your code - They work with all types of optimizations You can use source maps in different ways: - External files - Inline source maps - IDE debugging features Some popular frameworks use source maps: - React - Angular - Vue.js To use source maps effectively: - Generate them only in development environments - Minify your source maps - Use tools to analyze and optimize your source maps Source maps can also introduce security risks. Make sure to handle them properly. You can learn more about source maps here: Source: https://lnkd.in/d9Sm624S

Introducing bxp-code v1.0.0 — drop-in React code blocks for developers I built a VS Code theme extension (BedarX Pro) and wanted the same syntax colors on the web. Every React highlighting library I tried looked nothing like my editor, needed too much config, or produced flat output. So I built bxp-code. Drop-in React components with VS Code-accurate syntax highlighting via Shiki (same TextMate grammars VS Code uses) and automatic Prettier formatting. No setup needed. Two components: 1. BxpCode — code block with header, copy button, line numbers, sticky headers 2. BxpCodeTabs — tabbed interface for multi-language snippets Why use it: Building docs, portfolios, blogs, tutorials, or any React app showing code? This replaces wiring up a highlighter, formatter, copy button, and theme system separately. One import, one component. Dark/light themes included, every color customizable via props. Accepts code as string, File, or URL with auto language detection. What's next: Vue and Svelte adapters, React Native support, diff highlighting, and more built-in themes. The goal — the go-to code block component across frontend frameworks. npm install bxp-code npm: https://lnkd.in/dcZW7J5v Docs: https://lnkd.in/dVqcqN-z Playground: https://lnkd.in/dGX-4zbZ GitHub: https://lnkd.in/d2qPCt3e The VS Code theme it was born from: https://lnkd.in/dPZpgA23 A star or share goes a long way. Feedback welcome. #react #reactjs #npm #javascript #typescript #shiki #prettier #vscode #opensource #frontend #webdev #webdevelopment #syntaxhighlighting #codeformatting #developertools #dx #programming #coding #softwareengineering #vite #vitepress #vue #svelte #reactnative #github #nodejs #darkmode #buildinpublic #devcommunity #100daysofcode #uicomponents #componentlibrary #devtools #techcommunity

🚀 Why map( ) is Preferred in JavaScript & React While working with arrays in JavaScript—especially in React—map( ) becomes a go-to choice 👇 ✅ Returns a new array (no mutation) ✅ Keeps code clean & readable ✅ Perfect for JSX rendering ✅ Fits well with functional programming ✅ Helps avoid unexpected bugs In React, writing predictable and declarative code is everything—and map() supports that mindset perfectly. “Write code that explains what you want, not how to do it.” 💡 Small choices like using map() can make a big difference in code quality. #JavaScript #ReactJS #WebDevelopment #Frontend #CleanCode #LearningJourney #100DaysOfCode

🚀 𝐒𝐭𝐨𝐩 𝐁𝐫𝐞𝐚𝐤𝐢𝐧𝐠 𝐘𝐨𝐮𝐫 𝐂𝐨𝐝𝐞: 𝐖𝐡𝐲 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫𝐬 𝐀𝐫𝐞 𝐍𝐨𝐰 𝐂𝐡𝐨𝐨𝐬𝐢𝐧𝐠 𝐓𝐲𝐩𝐞𝐒𝐜𝐫𝐢𝐩𝐭 𝐨𝐯𝐞𝐫 𝐏𝐥𝐚𝐢𝐧 𝐉𝐚𝐯𝐚𝐒𝐜𝐫𝐢𝐩𝐭 🛡️ Have you ever accidentally typed a random string instead of a phone number? 😅 Imagine you create a contact for a friend, but because you are in a hurry, you accidentally type a random string like “abcxyz” instead of a phone number. If your phone is using JavaScript, it says: 👉 “𝑂𝑘𝑎𝑦, 𝑠𝑎𝑣𝑒𝑑.” Everything looks fine until you actually try to call your friend 📵. Now imagine your phone is using TypeScript. This time, the moment you try to save “abcxyz” as a phone number, the system stops you and says: ❌ "𝐸𝑟𝑟𝑜𝑟! 𝐴 𝑝ℎ𝑜𝑛𝑒 𝑛𝑢𝑚𝑏𝑒𝑟 𝑚𝑢𝑠𝑡 𝑐𝑜𝑛𝑡𝑎𝑖𝑛 𝑜𝑛𝑙𝑦 𝑑𝑖𝑔𝑖𝑡𝑠." Now you can fix the mistake before saving the contact. 💡 That’s the core difference between JavaScript and TypeScript. ⭕ JavaScript → lets mistakes slip through and fails at runtime ⭕ TypeScript → catches mistakes early, while you’re writing code 🤔 𝐖𝐡𝐲 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫𝐬 𝐚𝐫𝐞 𝐬𝐰𝐢𝐭𝐜𝐡𝐢𝐧𝐠 𝐭𝐨 𝐓𝐲𝐩𝐞𝐒𝐜𝐫𝐢𝐩𝐭: ✅ Fewer runtime bugs ✅ ✅ Better editor autocomplete 🖊️ ✅ Easier teamwork 🤝 ✅ Self-documenting code 📚 👉 TypeScript is not replacing JavaScript — it’s a superset, adding a safety net so your apps run smoother. 💡 Whether you’re building a large front-end app, backend server, or enterprise system, TypeScript helps you avoid silly mistakes before they become big problems. 📖 Read the full medium article: 👉 https://lnkd.in/g-KiDGey #TypeScript #JavaScript #Programming #WebDevelopment #SoftwareEngineering

🚀 React Class Components vs Function Components React has evolved — and so has the way we build components. 🔷 Class Components ✅ Lifecycle methods (componentDidMount, etc.) ✅ Structured, traditional approach ⚠️ More boilerplate ⚠️ Harder to reuse logic 🟢 Function Components ✅ Hooks (useState, useEffect) ✅ Cleaner & more readable code ✅ Easier state and side-effect management ✅ Highly reusable logic 💡 Modern React development favors function components, but understanding both is essential for working with real-world codebases. Which one did you learn first — classes or hooks? #React #WebDevelopment #Frontend #JavaScript #Programming #SoftwareEngineering #UI #Development

Day 2️⃣2️⃣ of #60DaysOfJavaScript Mastery is in the books! 📚✨ Today, I decided to stop just using React and start understanding the magic behind it. 🪄 We went deep into the world of Hooks! 🧵 Here’s the breakdown: ➡️ useState: The art of giving components a memory. From static to dynamic, one variable at a time. 🧠 ➡️ 💥 ➡️ useEffect: Taming the side effects! Whether it's fetching data or syncing with the outside world, learning to control when and how things run is a game-changer. ⚡🔄 ➡️ Custom Hooks: The ultimate power move. Abstracting complex logic into reusable, clean, and shareable chunks. It feels like building my own React toolkit! 🧰⚙️ Moving from "It works" to "This is why it works" feels incredibly satisfying. The component tree isn't so scary anymore when you know how to manage its state and lifecycle! 🌳 On to the next challenge! Who else is on a React journey right now? Let’s connect! 🤝 #JavaScript #ReactJS #WebDevelopment #FrontendDev #CodingJourney #useState #useEffect #CustomHooks #LearningToCode #Tech

JavaScript is becoming the assembly language of web development. TypeScript adds safety, scalability, and better DX. If you're starting today, why learn JS first at all? Should TypeScript replace JavaScript as the default? Agree or disagree? #JavaScript #TypeScript #WebDevelopment #Programming #Frontend #Developers