AbortController beyond API calls: cleaner code and fewer bugs

Pros & Cons of useEffect in React ⚛️ ✅ Pros Great for handling side effects like API calls, subscriptions, and timers Replaces class lifecycle methods with much cleaner logic Dependency array gives control over when the effect runs Cleanup functions help prevent memory leaks ❌ Cons Dependency array can be confusing and may cause bugs or infinite loops Often overused for things that don’t really need an effect Debugging async code inside useEffect isn’t always easy Poor usage can lead to performance issues 💡 Takeaway: Use useEffect only when you’re dealing with real side effects — not as a default solution. #ReactJS #Frontend #WebDevelopment #JavaScript #ReactHooks

Closures in JavaScript — Explained Simply A lot of people use closures without actually understanding them. So let’s kill the confusion. What’s a Closure? A closure is just a function that remembers the variables from where it was created, even after that outer function has finished running. Think of it like this The inner function carries a backpack Inside that backpack → variables from the outer scope. #JavaScript #Closures #WebDevelopment #Frontend #ReactJS #LearningInPublic #JavaScriptBasics

Static routes do not have to be stale 🔁 For this, we use "Revalidation". In my recent posts, I talked about static vs dynamic routes and what actually makes a route dynamic in Next.js. Revalidation lets you keep the speed of static pages while still updating data over time. No rebuilds. No client side refetching. If caching has ever felt confusing, this mental model usually makes it click. 👇 Check the carousel below #Nextjs #React #Frontend #WebDevelopment #Javascript #Typescript #ProgrammingTips

Using array index as a key in React works… until it doesn’t ⚠️ At first, everything looks fine. No errors. No warnings. But the moment you: - insert an item - remove one - or reorder the list state starts jumping between components. This happens because React uses the key to decide component identity. Index is not identity. It’s position. If the order changes, React gets confused — and the bug is silent. If a list can change, the index is almost never the right key. What’s the worst bug you’ve seen caused by this? #React #Frontend #JavaScript #WebDevelopment #ReactJS

What happens actually when you call setState() (Reconciliation phases) 1. Render phase: - React creates Virtual DOM - Compares it with previous one - Decides what needs to change - No real DOM updates here 2. Commit phase: - React applies the changes to real DOM. - Runs lifecycle methods and hooks like: useLayoutEffect 3. Commit phase (Final step): - Runs side effects: useEffects: - Cleanup of previous effects Understanding reconciliation helps you write better, performance-friendly components. #frontend #reactjs #javascript

Every keystroke triggering an API call is a hidden performance problem. It increases server cost, wastes resources, and can even return unreliable results due to overlapping requests. Debouncing solves this by waiting until the user stops typing before making a single, meaningful API call. Simple logic. Better performance. Cleaner frontend code. #ReactJS #FrontendDevelopment #WebDevelopment #CodingTips #Debouncing #JavaScript

Most grouping bugs I debug in production come from assuming keys are always strings. Object.groupBy() is fine for primitive keys, but anything else gets coerced into a property name. That means object/function keys collapse into "[object Object]", and you lose identity. Map.groupBy() keeps keys by reference, so lookups and merges remain predictable across code paths (assuming your runtime supports it, or you polyfill it). Where in your codebase are you grouping by something that isn’t naturally a string? #javascript #typescript #frontend #webdev

Ever wondered why process.nextTick() runs before Promises in Node.js? I created a short visual to explain how nextTick and Promise queues work inside the Node.js Event Loop and why their execution order matters. Understanding this helps avoid performance issues and unexpected behavior in async code. Let me know if this was helpful 👇 #nodejs #javascript #eventloop #backend #async #webdevelopment

🚀 Debounce is the easiest way to stop unnecessary API calls. Instead of reacting to every small change, it waits until the user pauses before taking action. I noticed this when working on a search input. Every keystroke was triggering work that didn’t really need to happen. Once I added debounce, everything felt better: ✅ fewer actions running ✅ smoother interactions ✅ cleaner logic In this carousel, I share: 👉 how debounce works in simple terms 👉 a clean useDebounce example for React / Next.js 👉 why this small change made a real difference Swipe through — this is one of those patterns I wish I learned earlier 👇 #React #NextJS #Frontend #JavaScript #WebDevelopment #Performance #SoftwareEngineering

💡 𝐑𝐞𝐚𝐜𝐭 𝐂𝐨𝐧𝐜𝐞𝐩𝐭 – 𝐏𝐫𝐨𝐩𝐬 ❓ Ever wondered how 𝐝𝐚𝐭𝐚 𝐟𝐥𝐨𝐰𝐬 between components in React? Today I learned about 𝐏𝐫𝐨𝐩𝐬, a core concept that makes React components reusable 🚀 🔹 Props are used to 𝐩𝐚𝐬𝐬 𝐝𝐚𝐭𝐚 𝐟𝐫𝐨𝐦 𝐩𝐚𝐫𝐞𝐧𝐭 𝐭𝐨 𝐜𝐡𝐢𝐥𝐝 𝐜𝐨𝐦𝐩𝐨𝐧𝐞𝐧𝐭𝐬 🔹 They help build 𝐝𝐲𝐧𝐚𝐦𝐢𝐜 & 𝐫𝐞𝐮𝐬𝐚𝐛𝐥𝐞 𝐔𝐈 🔹 Props are 𝐫𝐞𝐚𝐝-𝐨𝐧𝐥𝐲  (cannot be modified by child component) In the attached example, name is passed as a 𝐩𝐫𝐨𝐩 from parent to child component 👇 What should I share next — useEffect with API call or custom hooks? 🤔 #ReactJS #JavaScript #Props #FrontendDevelopment #LearningInPublic #ReactDeveloper