How Node.js Event Loop Works: A Visual Explanation

Here's what you're missing with the new architecture. ⚡ 2x faster startup 🎯 Smooth 60 FPS animations 🚀 Direct native calls (no more JSON overhead) I put together a simple comparison guide showing: - Old vs new side by side - Real performance differences - Migration steps Easy tables. No jargon. Check it out: https://lnkd.in/daEGy-Bu #ReactNative #MobileDev #JavaScript

Async isn’t magic, it’s choreography. And the Event Loop is the conductor. I used to think JavaScript just “somehow” knew when to run setTimeout or Promise.then. But once I understood how the event loop schedules work, async code finally made sense and performance bugs stopped feeling random. Here are three lessons that changed how I see it: • The Call Stack isn’t the whole story JavaScript runs on a single thread but async tasks take detours. They go to Web APIs, wait in queues, and re-enter the stack only when it’s empty. That’s why timing matters more than syntax. • Microtasks run first, always Promises, queueMicrotask(), Mutation Observers, they all get front-row seats. That’s why Promise.then() fires before setTimeout(0). Knowing this helps you reason about async flows instead of guessing. • Async patterns shape user experience Every await, setTimeout, or network call is an architecture choice. It affects UI responsiveness, perceived speed, and whether your app feels smooth or sluggish. The takeaway: The Event Loop isn’t about code execution - it’s about time management. Once you understand it, you stop fighting async behavior and start orchestrating it. #JavaScript #EventLoop #AsyncJS #WebDevelopment #FrontendEngineering

⚛️ useEffect — A Simple Breakdown That Finally Made Sense for Me Today I revised useEffect, and I focused on understanding when and why it runs. Once you look at it step-by-step, it feels much more predictable. 🔹 Here’s the simple flow: 1️⃣ It runs after the component renders 2️⃣ It runs again when the values in the dependency array change 3️⃣ If there’s a cleanup function, that runs when the component unmounts 🔹 Dependency Array Cheat Sheet: [] → run only on mount [count] → run when count updates no array → run on every render (not common) 🔹 Cleanup Example: Useful for timers, subscriptions, or event listeners. useEffect(() => { const id = setInterval(() => { console.log("Boring (: ..."); }, 1000); return () => clearInterval(id); // cleanup }, []); Understanding this flow makes React feel smoother to work with. Learning the “why” behind hooks really helps in writing predictable and clean components. #ReactJS #useEffect #Hooks #FrontendDevelopment #WebDevelopment #JavaScript #BuildingInPublic #100DaysOfCode

⚡ Mastering React Hooks (Part 4): The Power of useRef in Real Projects 🚀 Ever wanted to access a DOM element directly or keep a value that doesn’t trigger re-renders? That’s exactly what useRef is made for. What it does: useRef gives you a way to store a mutable reference — something that persists across renders but doesn’t cause the component to re-render when it changes. It’s like a hidden note where you can store information React doesn’t need to track visually. 🌍 Real-World Example: Imagine building a chat application 💬. When a user opens the chat window, you want the message input box to automatically focus — so they can start typing right away. Instead of manipulating the DOM manually, useRef allows you to instantly focus the input field as soon as the component loads — creating a smoother, more interactive user experience. Other real uses of useRef: Storing previous values for comparison Managing video or audio controls Keeping track of timers or intervals Preventing unwanted re-renders in performance-heavy components Why it’s powerful: ✅ Accesses DOM elements directly ✅ Stores mutable values between renders ✅ Enhances performance without triggering re-renders ✅ Works great for UI interactions and animations Key takeaway: “useRef is your silent helper — always tracking, never interrupting.” ✨ Next in the series — Part 5: useMemo, your ultimate weapon for performance optimization. #KIT #StemUp #ReactJS #ReactHooks #useRef #FrontendDevelopment #WebDevelopment #JavaScript #React #LearningSeries #CodingCommunity #ContinuousLearning #TechInsights

🧠 Conditional Twins — If-Else & Ternary, Not So Identical! 1️⃣ Nature: 👉if-else is a conditional statement, while the ternary operator (? :) is a conditional expression. 👉 Both depend on conditions, but the difference lies in how they execute — one controls logic flow, the other produces a value. 2️⃣ Execution Type: 👉 if-else is a statement, meaning it performs an action but doesn’t return a value. 👉 The ternary operator is an expression, which evaluates and returns a value that can be assigned, logged, or rendered. 3️⃣ Logging Difference: 👉 With if-else, you can directly log results inside each block. 👉 With a ternary, you must store or use its evaluated result — since it returns a value, not a statement block. 4️⃣ JSX Insight (Key Takeaway 💡): 👉 In JSX, only expressions are allowed — not statements. 👉 That’s why we use ternary operators instead of if-else when handling conditional rendering in React components. 🚀 JSX Made Me Realize Why Ternary Wins Over If-Else! ✨ In short: 👉 Use if-else when you want to control the flow of your logic. 👉Use the ternary operator when you need a value-based condition inline. ⚙️ One Decides, One Returns — The Conditional Contrast! #️⃣ #JavaScript #WebDevelopment #ReactJS #Frontend #CodingTips #ConditionalRendering #JSX #DeveloperCommunity #LearnJS #CodeSmart

Closures are everywhere in JS — in event listeners, state hooks (useState), debounce functions, and encapsulating private variables. So what are they really? #JS #LearningJavaScript #React

Think backticks are just for fancy string formatting? How adorable. Place a function name right before one, and it becomes a *tagged template*. JS calls your function with the raw text pieces and your variables as separate arguments. The catch? You’ve created a function call that doesn't look like one, baffling anyone who hasn't seen this trick before. Is this a powerful tool for building DSLs, or a syntax nightmare waiting to happen? #GaboTips #JS

🎯 A Little Story About JavaScript Events While working on a UI feature recently, I was thinking about how neatly JavaScript handles user interactions — especially through event flow. Imagine this 👇 You click a button inside a card component. The click first triggers on the button... but somehow, the parent card also reacts. That’s not magic — that’s Event Bubbling in action. In bubbling, the event starts at the target element and travels up through all its ancestors until it reaches the top of the DOM. There’s also the opposite path — Event Capturing — where the event moves down from the root to the target. You can enable this phase using: element.addEventListener("click", handler, true); And sometimes, you just want that click to stay right where it happened — no parents involved. That’s when event.stopPropagation() steps in to save the day ✋ Understanding how events travel through the DOM makes handling complex interfaces so much smoother. It’s one of those core concepts that quietly powers every interactive web experience we build. #JavaScript #Frontend #WebDevelopment #Coding #TIL

When we log something in the browser and see "prototype," do we really know what it is or why it's there? Prototypes are like hidden blueprints that every object uses to find properties and methods it doesn't have. When working with objects, like different users, prototypes make it possible for them to share functions instead of each carrying its own copy. That's how JS saves memory and keeps things efficient. What's even more interesting is that every function has a prototype object—and that prototype has a constructor that points right back to the function itself. Understanding this makes it clear that classes in JavaScript aren't a new thing; they're just a cleaner way to work with the same prototype-constructor system. I wrote an article breaking down prototypes in simple terms with examples: https://lnkd.in/dDHAWvPn #JS #JavaScript #3hourseveryday

Built a fun little Score Keeper using JavaScript and Bulma! This project helped me dive deeper into DOM manipulation, event handling, and clean UI design. Here’s a short demo, always satisfying to see code come to life! ⚡ #Coding #JavaScript #WebDev #Bulma #ProjectShowcase