React Aha Moments: State, Hooks, and Performance

🚀 React JS Hooks – Simple Understanding React Hooks made development easier by allowing us to use state and lifecycle features in functional components — no need for complex class components anymore. 🔹 Use state Helps you manage and update data inside a component. Whenever the data changes, the UI updates automatically. 🔹 Use effect Used for handling side effects like API calls, timers, or updating the DOM after rendering. --- ✨ Why Developers Love Hooks? ✔ Cleaner and shorter code ✔ Easy to understand and maintain ✔ Reusable logic across components ✔ Better performance in modern apps --- 💡 Pro Tip: Start with useState and useEffect — once you master these, React becomes much easier to work with. #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment #Coding #Developers

most React developers use useCallback wrong. not because they don't understand it. because they were taught the wrong rule. the rule they heard: "wrap functions in useCallback to prevent unnecessary re-renders. the actual rule: useCallback only helps when you pass that function to a child component wrapped in React.memo or as a dependency in useEffect. that's it. useCallback doesn't prevent re-renders of the parent. it just memoizes the function reference so children don't see a "new" function every render. three questions to ask before reaching for useCallback: - is this function passed to a memoized child component? - is this function a dependency in a useEffect? - is this function expensive to recreate? if none of these just write the function normally. the best optimisation is usually the one you don't add. #reactjs #typescript #webdevelopment #buildinpublic #javascript

The Great Debate: Formik or React Hook Form?  Both are industry favorites, but they offer two very different approaches to handling forms in React. While one is praised for its stability and ease of use, the other is the go-to for performance and minimal re-renders. Most developers have a strong preference, but is there really a "winner"? Which one is currently in your tech stack, and why did you choose it over the other? 👇   #ReactJS #FrontendDevelopment #WebPerformance #ProgrammingTips #Javascript

The State of JS 2025 results are in. 13,002 developers responded. Here's the uncomfortable truth: nothing changed. React is still at 83.6% usage. The framework rankings haven't moved in 2 years. But the satisfaction data tells a different story -- Svelte 5 and Solid own developer happiness, while React tops the pain-points list. And Next.js just pulled off the rarest trick in tech: gaining users while losing their affection (satisfaction dropped from 68% to 55%). The survey's own conclusion: "Developers aren't switching because the tools finally work." What surprised you most in this year's results? Prepare for front end interviews with questions and solutions written by ex-FAANG engineers: https://lnkd.in/gQs65aK6 #JavaScript #StateOfJS #React #FrontEnd #WebDevelopment #GreatFrontEnd

One mistake I see many React developers making 👇 They learn everything… but master nothing. - Redux ✅ - Next.js ✅ - TypeScript ✅ - WebSockets ✅ - System Design (basic) ✅ Looks good on paper, right? But when it comes to solving a real-world problem… they struggle. I was doing the same. Jumping from one topic to another. Watching tutorials. Feeling “productive”. But not actually getting better. Then I changed one thing: 👉 I started going deep instead of wide Instead of learning 10 tools, I focused on: - How React actually works under the hood - Rendering, reconciliation, performance - Writing clean, scalable components - Real-world architecture decisions And everything started to click. ⚡ The truth is: Top 1% developers don’t know everything They understand a few things really deeply If you're a developer reading this: Pick ONE area this week. Go deep. Build something real. Break it. Fix it. Repeat. What are you going deep into right now? #ReactJS #FrontendDevelopment #WebDevelopment #JavaScript #NextJS #TypeScript #SoftwareEngineering #CodingLife #DeveloperMindset #LearnToCode #Programming #TechCareers #DevCommunity #100DaysOfCode #BuildInPublic #SystemDesign #CleanCode #PerformanceOptimization #ReactDeveloper #FullStackDeveloper

Built a Product Sorting Feature in React! I implemented dynamic sorting using useState and an array.sort() now products reorder instantly based on user selection. 🔹 Sort by Price (Low → High, High → Low) 🔹 Sort by Name (A → Z) 🔹 Used the spread operator to avoid mutating the original array This helped me understand how state + sorting works in real projects. 💻 Tech: React.js, JavaScript #ReactJS #JavaScript #FrontendDeveloper #WebDevelopment #CodingJourney

Most developers think the key prop in React is just for lists. But one small mistake with keys can silently destroy your frontend performance and increase load time without you realizing it. I’ve seen apps where random keys caused full component remounts on every render — and debugging that was painful. If you're using Math.random() or changing keys unnecessarily this post might save you hours of debugging. #react #frontend #reactjs #javascript #webdevelopment #frontenddeveloper #softwareengineering #codingtips

🔹 React Basics: Props vs State (Explained Simply) When starting with React, one of the most important concepts to understand is the difference between Props and State. Here’s a simple breakdown 👇 👉 Props (Properties) • Passed from parent to child components • Read-only (cannot be modified) • Used to make components reusable 👉 State • Managed within the component • Can be updated using hooks like `useState` • Controls dynamic data and UI behavior 💡 In short: Props help you pass data, while State helps you manage data. Understanding this difference is key to building scalable and maintainable React applications. If you're learning React, mastering these fundamentals will make your journey much smoother 🚀 💬 What topic should I cover next in React? #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment #LearningInPublic #SoftwareDevelopment #CodingJourney #Developers

🚀 No JSX? No Problem! Most React developers write JSX every day — but do you know  what's actually happening under the hood? Every line of JSX you write gets compiled into  React.createElement() calls by Babel. So instead of this 👇 const element = <h1 className="title">Hello World</h1>; React actually runs this 👇 const element = React.createElement(  'h1',  { className: 'title' },  'Hello World' ); 🤯 Mind blown? It gets even more interesting with NESTED elements! In my latest YouTube video, I break down exactly: ✅ How React.createElement() works ✅ How to build nested elements WITHOUT JSX ✅ Why understanding this makes you write better React code ✅ What JSX is really doing behind the scenes 💡 Most developers skip this fundamental concept — but the ones  who understand it debug faster, think clearer, and write  more confident React code. 🎯 Whether you're a beginner or intermediate React developer,  this is the one concept that will change how you see JSX forever. 👇 Watch the full video here: 🔗 https://lnkd.in/g4ycpcXn If you found this useful, ♻️ repost to help other React  developers level up! #ReactJS #JavaScript #JSX #WebDevelopment #Frontend  #React18 #LearnReact #Programming #SoftwareDevelopment  #ReactTutorial #CodeNewbie #100DaysOfCode

🚀 Mastering React Hooks . ➡️ useState batching & functional updater pattern ➡️ useEffect cleanup, dependency array pitfalls ➡️ useLayoutEffect vs useEffect - when to use each ➡️ useRef - mutable values without re-renders ➡️ useMemo — referential stability vs computation cost ➡️ useCallback - stable function references ➡️ useReducer - complex state machines ➡️ useContext - consumer re-render behaviour ➡️ custom hooks - extraction & composition patterns ➡️ uselmperativeHandle + forwardRef ➡️ useDeferredValue & UseTransition (React 18) ➡️ useld, useSyncExternalStore (React 18) 🚀 Follow Chinmay Kulkarni for more . #React #ReactJS #ReactHooks #FrontendDevelopment #JavaScript #WebDevelopment #FrontendEngineer #SoftwareEngineering #CodingInterview #InterviewPreparation #React18 #PerformanceOptimization #TechCareers #Developers #SeniorDeveloper