React Class Components: Lifecycle Methods & State Management

🚀🚀 Understanding State vs Props: 🔹 Props • Passed from a parent component to a child component • Immutable (read-only) inside the receiving component • Used to configure or pass data to components 🔹 State • Managed within the component itself • Can be updated over time • Used to handle dynamic data and UI changes In simple terms: Props help components communicate, while State helps components manage their own data. Mastering this concept makes it much easier to build clean, predictable, and scalable React applications. 🚀 #reactjs #javascript #frontend #webdevelopment

Day 82 / 365 👨💻 Started understanding React state. 🧠 Problem that useState solves ⚙️ How useState works step by step 🔄 Why re-rendering happens ⏳ Why state updates aren’t immediate 🔁 Updater function vs direct value #365DaysOfCode #React #JavaScript #Frontend

I just deleted 30 lines of code from a React component. no refactor. no library. just one hook in React 19. it's called use() — and it changes how you handle async data and context in your components. most devs haven't heard of it yet. swipe through ↓ broke it down simply what's the most boilerplate you've deleted in a single React upgrade? 👇 #react #react19 #javascript #webdev #frontend

🚀Render Props in React! 🚀 Instead of hardcoding what a component renders, you pass a function as a prop and let the component call it. Simple idea. Powerful results. 💡 So, that's why I implemented a short example to show you how some component passes between a parent and another child component. Here is a link for it: https://lnkd.in/d5NqDjEK One component. Endless possibilities. #React #Frontend #WebDevelopment #JavaScript

Think you know JavaScript? Explain this output! 👇 What gets printed to the console? A) undefined, 10, 10, 10 B) ReferenceError, 10, 10, 20 C) undefined, 10, 10, 20 D) undefined, 10, 20, 10 #Technology #JavaScript #SoftwareEngineering  #WebDevelopment #ProgrammingRiddles #WebDev #Frontend #ReactJS #CleanCode #ProgrammingTips

⚡ Lazy Loading in React — a quick visual breakdown → Before: 3.7 MB loaded on page open   → After: 405 KB loaded on page open   → Result: 4.3× faster First Contentful Paint 🚀  All of this with just 2 lines of code using React.lazy() + Suspense. This is a small but often underestimated concept that can significantly improve performance. Swipe to see the network panel & Lighthouse scores 👉  #ReactJS #WebPerformance #Frontend #JavaScript #React

Mantener dependencias actualizadas no debería ser una carga. Con Version Lens ves versiones desactualizadas directamente en tu package.json y actualizás más rápido. Actualizá mejor. No más difícil. — Keeping dependencies up to date shouldn’t feel like a chore. With Version Lens you can spot outdated packages in your package.json and update faster. Update smarter. Not harder. #webdevelopment #javascript #npm #frontend #vscode #devtools #productivity

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

⚛️ React 19.2 : Smarter State, Less Hassle In this Q&A, Faris Aziz explains how React 19.2 enables background rendering—so you can keep component state even when it’s not visible, simplifying state management. ✨ What you’ll learn: • Keep state without complex workarounds • Render components in the background • Reduce lifecycle & cleanup complexity Don’t miss this if you want to stay ahead with modern React 👀 👉 Explore the full program: https://lnkd.in/dfSdRXcX #React #JavaScript #WebDevelopment #Frontend #TechTalk #iJSConf