Aryan Kumar’s Post

React just got even more powerful 🚀 The new use hook lets you read async data directly during rendering — no more juggling useEffect + useState. ✅ Cleaner code ✅ Less boilerplate ✅ Built for Suspense Sometimes, less code really is more. #React #JavaScript #WebDevelopment #Frontend #Coding

Six characters that completely changed how we write JavaScript. 👇 If your code is still cluttered with the function keyword, it’s time for an upgrade. Arrow functions () => {} aren't just syntactic sugar; they are the backbone of clean, modern JS. Swipe through the carousel to see: - Why developers prefer them - How they fix the classic this headache - Where they shine the most How often are you using arrow functions in your current projects? #JavaScript #WebDev #CleanCode #Frontend #Coding

We all use try...catch in JavaScript. But do we really understand it? 👀 I recently explored some surprising behaviors: finally can override your return 🤯 1. try-catch doesn’t handle async errors ❌ 2. catch is actually optional 😳 These small nuances can save you from production bugs. Wrote a simple and practical breakdown 👇 https://lnkd.in/g7NQJzcT Would love your feedback 🙌 #javascript #webdevelopment #frontend #coding #learninpublic

Most of this was built in a coffee house, which means.. I was literally waving my hands in the air like a crazy person the whole time, getting very interesting looks from people around me 😌 Anyway, this is what it turned into: My “Air Canvas” ✨ A small experiment turning hand tracking into a drawing interface, built with React JS and TypeScript. Try it out here: https://lnkd.in/dz5r6-zS #coding #frontend #javascript #womenintech #webdevelopment #creativecoding #softwareengineering #buildinpublic

JavaScript scoping still breaks more code than people admit. Not because developers don’t know syntax. Because they assume var behaves like let. It doesn’t. let / const → block scope var → function scope That tiny difference still causes: - hidden bugs - confusing loops - unexpected values in legacy code If you work with older JavaScript codebases, this still matters a lot. #javascript #frontend #webdevelopment #reactjs #coding

Something I just realized… React is changing the way we write code We used to do this: useMemo, useCallback, React.memo everywhere. Now with the React Compiler (2026), it handles optimization automatically No more worrying about dependency arrays or overthinking re-renders. → Cleaner code → Less bugs → Focus more on logic, not performance tricks We spent years learning this… and now React just does it for us. Not a loss - just progress #ReactJS #WebDevelopment #Frontend #JavaScript #Coding

JavaScript scoping still breaks more code than people admit. Not because developers don’t know syntax. Because they assume var behaves like let. It doesn’t. let / const → block scope var → function scope That tiny difference still causes: - hidden bugs - confusing loops - unexpected values in legacy code If you work with older JavaScript codebases, this still matters a lot. Do you still see var in production code or is it finally gone? 👇 #javascript #frontend #webdevelopment #reactjs #coding

☕ Synchronous vs Asynchronous JavaScript JavaScript is single-threaded — one task at a time. 🧱 Synchronous → Step-by-step (blocking) ⚡ Asynchronous → Non-blocking (runs in background) 👉 Without async, your UI would freeze during API calls, timers, or heavy tasks. 💡 Thanks to the Event Loop + Task Queue, JS stays fast and responsive. 🚀 Learn async → write better, smoother apps. #JavaScript #Async #WebDevelopment #Coding #Developers #Frontend  #Tech #SoftwareEngineering #LearnToCode #chaicode #chaiaurcode Chai Aur Code

Why does JavaScript show "undefined"? If you’ve seen this, you’ve already faced Hoisting. I broke it down in the simplest way possible 👇 ✔ JavaScript runs in 2 phases ✔ var is hoisted with undefined ✔ let & const are hoisted but not initialized (TDZ) 💡 Rule: Always declare variables before using them Save this for revision 📌 #javascript #webdevelopment #frontend #coding #reactjs