React useCallback vs useMemo: When Function Identity Matters

Most frontend bugs are not about state. They're about async. - race conditions - stale data - inconsistent loading/error We've been treating async as a side effect. I've been experimenting with a different approach: → making async part of a reactive runtime I built a small prototype: @signal-kernel/async-runtime It automatically handles: - cancellation - last-write-wins - consistent async state No hooks. No manual control. Still exploring this direction, but curious what others think. #react #javascript #signals #frontend #webdevs #typescript #library Npm Link is here👇 https://lnkd.in/gN7BC3Vt

Unpopular opinion: Most developers don’t grow because they stay “busy”. • They code all day. • Fix bugs. • Attend meetings. • Close tickets. But rarely step back and ask: “Did I actually improve today?” Growth doesn’t come from doing more work. It comes from: • Understanding why something broke • Refactoring instead of patching • Questioning decisions, not just implementing them • Learning from mistakes instead of moving on quickly You can be busy for years… and still stay at the same level. Experience is not time. It’s reflection. #softwareengineering #frontend #careergrowth #react #javascript

🚨 𝗥𝗲𝗮𝗰𝘁 𝗖𝗼𝗱𝗲 𝗦𝗺𝗲𝗹𝗹 #𝟬𝟴: 𝗢𝘃𝗲𝗿𝘂𝘀𝗶𝗻𝗴 𝘂𝘀𝗲𝗠𝗲𝗺𝗼 Not everything needs optimization. Using useMemo for simple calculations often adds more complexity than value. 👉 Memoize expensive work, not trivial math 👉 Prefer simpler code 👉 Optimize only when necessary Clear code beats premature optimization. Have you ever removed a useMemo and simplified a component? 😄 #React #CleanCode #CodeSmell #ReactHooks #Frontend #JavaScript

Today I want to share an amazing React feature that many developers don't know about. It allows you to create components using a class instead of a function. This gives you access to powerful tools like lifecycle methods, this.state, and this.setState(). 2026 is the new 2016 🤣 #React #JavaScript #Frontend #WebDevelopment #SoftwareEngineering

JavaScript is single-threaded. So how does it run setTimeout, Promises, and await without blocking everything? The answer is the event loop. But most explanations make it sound more complicated than it actually is. Async in JavaScript isn’t magic. It’s just a predictable system of queues: • Call Stack • Microtask Queue • Macrotask Queue • Rendering cycle Once you understand how these queues run, the execution order suddenly makes sense. No more “Why did this run first?” moments. I broke the whole concept down visually in this carousel. If async has ever confused you while debugging Save this post, you’ll want it later. RRK signing off! 💛 #javascript #webdevelopment #frontend #reactjs #softwareengineering

Day 84 / 365 👨💻 Revisited key concepts around React state management. 🧠 Understanding how useState drives UI updates ⚙️ Breaking down re-render behavior ⏳ Handling async nature of state updates 🧩 Working with multiple states (arrays/objects) ⚠️ Applying Rules of Hooks correctly #365DaysOfCode #React #JavaScript #Frontend

Most developers know the Event Loop. Few understand its priority model. JavaScript doesn’t just “run async code.” It runs it through two distinct queues: • Microtasks (high priority) • Macrotasks (lower priority) And the rule is absolute: All microtasks run before even ONE macrotask. That means: Promises always beat setTimeout. Async/await always beats timers. This isn’t trivia. This is the scheduling policy of the entire runtime. Architects don’t just write async code. They design around the scheduler. Follow Muhammad Nouman for more useful content #JavaScript #React #Frontend #EventLoop #SystemDesign #AsyncProgramming #SoftwareArchitecture #JSInternals

Custom hooks help you extract reusable logic, keep your components clean, and simplify state management. They’re perfect for making your React code more organized and maintainable. Benefits: Reuse logic across components Avoid repetition Simplify complex logic Improve consistency 💡 Pro Tip: Start with small hooks for common patterns—it saves time and makes your projects scalable! #ReactJS #CustomHooks #WebDevelopment #Frontend #JavaScript #CleanCode

The DOM API hasn’t changed much in decades. Yet modern UI development relies heavily on runtime abstractions just to manage DOM mutations. So I started wondering: What if the platform itself provided a simpler mutation API? I wrote a small article exploring this idea with a prototype called DOM++. Read the article: https://lnkd.in/gxrebGuD Would love to hear thoughts from the frontend community. #frontend #webdevelopment #javascript #webplatform #opensource

React Performance: Slow vs Fast We often write components that “work” — but are they optimized? 🔴 Slow Approach - Recalculates on every render - Creates new functions repeatedly - No memoization Result: ~2.5s render time 🟢 Fast Approach - Uses "useMemo" for expensive calculations - Prevents unnecessary re-renders - Cleaner & optimized logic Result: ~0.2s render time 💡 Key Takeaway: Small optimizations like memoization can make a HUGE difference in performance and user experience. Write smarter, not just working code. #ReactJS #FrontendDevelopment #WebPerformance #JavaScript #CodingTips #DevLife