Mass-deleting class components in 40K-line React codebase

Most developers meet React’s useEffect() and immediately think: "Why is this behaving so weird?" 😵💫 But the moment you understand the dependency array, everything suddenly clicks. 💡 Here’s the simple mental model that makes useEffect easy: 🔹 No dependency array useEffect(() => {}) Runs after every render. 🔹 Empty dependency array useEffect(() => {}, []) Runs only once when the component mounts. 🔹 With dependencies useEffect(() => {}, [count]) Runs every time count changes. 🔹 Cleanup function Perfect for things like timers, subscriptions, or event listeners. Example: Start a timer ⏱️ → Do something → Clean it up when the component unmounts. That small dependency array controls everything. Once you understand this concept, useEffect stops feeling confusing and starts feeling powerful. Sometimes the most confusing parts of coding are just one small concept away from clarity. 💡 Yogita Gyanani Piyush Vaswani #React #WebDevelopment #FrontendDevelopment #JavaScript #CodingTips #ReactJS

Lately, I've been diving deeper into React to understand how it actually works under the hood. Not just building components, but exploring things like: • How React handles re-renders • State management patterns • Performance optimizations • The internal logic behind hooks • How React's rendering process works It’s easy to use React, but truly understanding why things work the way they do is where real learning begins. My goal right now is simple: Go beyond tutorials and build a stronger foundation. 🚀 #reactjs #webdevelopment #javascript #frontend #developerjourney

The "Back to Basics" Approach Best for: Establishing yourself as a lifelong learner or mentor. Headline: Mastering the Building Blocks of React ⚛️ Even as the React ecosystem grows with new hooks and frameworks, the core principles remain the same. Understanding these 6 main concepts is the difference between writing code that "just works" and writing code that is scalable and efficient. 🧩 Components: The puzzle pieces of your UI. 📝 JSX: Bringing the power of HTML into JavaScript. 📥 Props: How we pass data down the tree. 💾 State: The local memory of your component. ⚡ Events: Handling user interaction across all browsers seamlessly. 🔄 Lifecycle: Understanding the "birth" and "death" of a component. Which of these concepts was the hardest for you to grasp when you first started? Let’s discuss in the comments! 👇 #ReactJS #WebDevelopment #Frontend #CodingTips #SoftwareEngineering

React.js Cheatsheet — Your Quick Guide to Core Concepts I’ve put together a concise React.js cheatsheet covering the essentials every developer should keep handy — from fundamentals to advanced practices. 🔹 Core concepts: Components, JSX, Virtual DOM 🔹 Hooks: useState, useEffect, useContext & more 🔹 Routing, Forms, and API integration 🔹 Performance optimization & best practices 🔹 Testing and real-world mini project ideas Whether you’re revising fundamentals or mentoring someone, this quick reference can save time and keep the big picture clear. 💡 Consistency in basics is what builds strong front-end. #ReactJS #FrontendDevelopment #WebDevelopment #JavaScript #Coding #Learning #Developers

React.js Cheatsheet - Your Quick Guide to Core Concepts I've put together a concise React.js cheatsheet covering the essentials every developer should keep handy - from fundamentals to advanced practices. ☆ Core concepts: Components, JSX, Virtual DOM ☆ Hooks: useState, useEffect, useContext & more ☆ Routing, Forms, and API integration ☆ Performance optimization & best practices ☆ Testing and real-world mini project ideas Whether you're revising fundamentals or mentoring someone, this quick reference can save time and keep the big picture clear. 💡 Consistency in basics is what builds a strong front-end. #ReactJS # Frontend #WebDevelopment #JavaScript #Coding #Learning #Developers

🚀 React.js Basics: Understanding Props vs State While learning and building projects in React.js, one of the most important concepts to understand is the difference between Props and State. 🔹 State Managed inside the component Can change over time Used for dynamic data like counters, forms, UI updates 🔹 Props Passed from parent to child components Read-only (cannot be modified by the child) Used to share data between components 💡 Simple way to remember: State = Internal data of a component Props = Data passed from parent component Understanding these two concepts clearly helps in building clean, reusable, and scalable React components. I created this visual to make the concept easier for beginners who are learning React UI Development. 🌐 Explore my work: https://allconverthub.com https://lnkd.in/g4Hnzt9Z #ReactJS #FrontendDevelopment #UIDeveloper #JavaScript #WebDevelopment #ReactLearning #FrontendEngineer #Coding

Learning React made me realize something — frontend isn’t about “changing elements.” It’s about controlling state and thinking in systems. Once that clicked, everything started making sense. Still early in the journey, but the foundation is getting stronger every day. Next stop: advanced hooks and performance optimization. Building > consuming. #ReactJS #JavaScript #FrontendDeveloper #WebDevelopment #CodingJourney #LearnInPublic #FullStackPath

🚀 React Hooks Small Projects I recently worked on a few small projects to better understand some important React Hooks. In this video, I demonstrated how these hooks work with simple examples so that beginners can easily understand their usage. 🔹 useState – Used to manage state inside a functional component. It helps update and display dynamic data in the UI. 🔹 useEffect – Used to handle side effects in React applications such as API calls, timers, and updating the DOM when state changes. 🔹 useContext – Helps share data globally across components without passing props manually through every level. 🔹 useReducer – A powerful hook for managing complex state logic, especially when multiple state updates depend on different actions. 🔹 useMemo – Optimizes performance by memoizing expensive calculations so they only run when dependencies change. 🔹 useCallback – Returns a memoized function to prevent unnecessary re-renders when passing functions to child components. These mini projects helped me strengthen my understanding of React Hooks and component optimization techniques. 📌 If you watch the video, you can easily understand how each hook works in a practical way. #ReactJS #ReactHooks #WebDevelopment #MERNStack #JavaScript #FrontendDevelopment #CodingPractice

🚀 Goodbye CRA, Hello Vite! Why I’m never looking back. If you’re still using npx create-react-app, it’s time for a serious talk. ☕️ For years, CRA was our go-to, but the web evolved, and CRA... well, it stayed the same. Enter Vite — the French word for "fast," and it absolutely lives up to its name. ⚡️ What changed? Why did we switch? 🤔 Previously, Webpack (used by CRA) had to bundle your entire application before it could serve it. As your project grew, your start times went from seconds to minutes. 🐢 Why is Vite a game-changer? 💎 1️⃣ Instant Server Start: Vite uses Native ESM. It doesn't bundle your code during development; it serves it on demand. 2️⃣ Lightning Fast HMR: Hot Module Replacement that actually feels "hot." You hit save, and the change is there instantly, no matter the project size. ⚡️ 3️⃣ Build Speed: It uses esbuild (written in Go) for pre-bundling dependencies, which is 10-100x faster than JS-based bundlers. 🏎️ 4️⃣ Modern by Default: Better support for TypeScript, CSS modules, and environment variables out of the box. The verdict? 🏆 The era of waiting for your dev server to cold start is over. Setting up a React project with Vite is as simple as: npm create vite@latest Stop waiting, start coding. Your productivity (and your fans) will thank you! 🙌 #ReactJS #Vite #WebDevelopment #Frontend #CodingTips #JavaScript #TechTrends #Programming

I used to think I knew how to code because I could follow a tutorial. 🤷♂️ Then I opened a blank file... and stared at it for 20 minutes. 😅 It’s a humbling moment for every junior developer. You watch the video, you type the syntax, and it works. You feel like a genius. But when you try to build your own project from scratch, you realize you were just copying, not engineering. I’ve now built 6+ projects (using React & Tailwind CSS), and I’ve learned more from my own broken code than from any perfect tutorial. Real growth happens when the screen is red with errors, not when it’s green on the first try. To anyone else currently stuck: Close the video. Open the docs. Break things. #JuniorDeveloper #CodingJourney #ReactJS #WebDevelopment #GrowthMindset #RealTalk