React Hooks Simplify State Management

useEffect can cause you side effects. I've seen people with months of React experience still getting burned by it. This is Post 8 of the series: 𝗥𝗲𝗮𝗰𝘁 𝗨𝗻𝗱𝗲𝗿 𝘁𝗵𝗲 𝗛𝗼𝗼𝗱 Where I explain what React is actually doing behind the scenes. 🔹 It doesn't run when you think it does. Most devs assume useEffect runs during render. It doesn't. It fires AFTER the render and AFTER the browser paints. React keeps the render phase pure and side-effect free on purpose. 🔹 The dependency array controls everything. This one argument decides when your effect runs. No array → runs after EVERY render [ ] empty → runs once on mount [dep] → runs when that value changes Get this wrong → bugs that are nearly impossible to debug. 🔹 [ ] is often a lie. Everyone slaps [] thinking "run once and forget." But if you're using any variable from inside the component and not declaring it as a dep — that's a stale closure. A hidden bug that silently uses outdated data. 🔹 Missing deps → infinite loops. useEffect with no dep array + a setState inside? That's: render → effect fires → state updates → re-render → effect fires again… Infinite loop. Your app crashes. You panic. 🔹 Cleanup is NOT optional. Every event listener, timer, interval, or subscription you create inside useEffect needs to be cleaned up. No cleanup → memory leaks grow silently in the background. 🔹 Stop overusing it. useEffect is for syncing with external systems. Not for everything. Deriving state, transforming data, computing values. None of that needs useEffect. Ask yourself before writing it: "Is this syncing with something outside React?" If no → you probably don't need it. Next post : State vs Ref vs Variable Follow Farhaan Shaikh if you want to understand React more deeply. 👉 Read the previous post: React hooks hate you for this: https://lnkd.in/d7ySVnJA #React #ReactJS #WebDevelopment #Frontend #JavaScript #useEffect #BuildInPublic #LearnInPublic #FrontendDevelopment #ReactUnderTheHood #DevTips #WebDev #Programming

🚀 Understanding Project Folder Structure If you're starting with React or Full-Stack development, knowing the folder structure is very important. Here’s a simple breakdown 👇 📁 src/ Main folder where all your application code lives 👉 Components, pages, logic, styles 📁 assets/ Used for storing static files 👉 Images, icons, fonts, videos 📁 components/ Reusable UI parts 👉 Navbar, Footer, Buttons, Cards 📁 pages/ Represents different screens of your app 👉 Home, About, Contact 📁 api/ Handles backend communication 👉 Fetching and sending data 📁 utils/ Helper functions used across the app 👉 Date format, validations, calculations 📁 hooks/ Custom React hooks 👉 Reusable logic (useAuth, useFetch) 📁 context/ Global state management 👉 Share data across components 💡 Clean folder structure = Clean and scalable code #ReactJS #WebDevelopment #FullStack #JavaScript #Coding #Developers #Programming

🚀 Understanding Project Folder Structure If you're starting with React or Full-Stack development, knowing the folder structure is very important. Here’s a simple breakdown 👇 📁 src/ Main folder where all your application code lives 👉 Components, pages, logic, styles 📁 assets/ Used for storing static files 👉 Images, icons, fonts, videos 📁 components/ Reusable UI parts 👉 Navbar, Footer, Buttons, Cards 📁 pages/ Represents different screens of your app 👉 Home, About, Contact 📁 api/ Handles backend communication 👉 Fetching and sending data 📁 utils/ Helper functions used across the app 👉 Date format, validations, calculations 📁 hooks/ Custom React hooks 👉 Reusable logic (useAuth, useFetch) 📁 context/ Global state management 👉 Share data across components 💡 Clean folder structure = Clean and scalable code #ReactJS #WebDevelopment #FullStack #JavaScript #Coding #Developers #Programming

🚀 Understanding Project Folder Structure If you're starting with React or Full-Stack development, knowing the folder structure is very important. Here’s a simple breakdown 👇 📁 src/ Main folder where all your application code lives 👉 Components, pages, logic, styles 📁 assets/ Used for storing static files 👉 Images, icons, fonts, videos 📁 components/ Reusable UI parts 👉 Navbar, Footer, Buttons, Cards 📁 pages/ Represents different screens of your app 👉 Home, About, Contact 📁 api/ Handles backend communication 👉 Fetching and sending data 📁 utils/ Helper functions used across the app 👉 Date format, validations, calculations 📁 hooks/ Custom React hooks 👉 Reusable logic (useAuth, useFetch) 📁 context/ Global state management 👉 Share data across components 💡 Clean folder structure = Clean and scalable code #ReactJS #WebDevelopment #FullStack #JavaScript #Coding #Developers #Programming

React System Design – Day 10: Hooks and Their Rules Hooks are the backbone of modern React development. They let us write cleaner, more reusable, and more functional code. But with great power comes great responsibility — and React enforces some strict rules to keep things predictable.  The Two Golden Rules of Hooks Only call Hooks at the top level Don’t call them inside loops, conditions, or nested functions. This ensures React can preserve the correct state across re-renders. Only call Hooks from React functions Hooks must be used inside functional components or custom Hooks. Never call them in regular JS functions or class components.  Why These Rules Matter They guarantee consistent order of execution. They prevent bugs where state or effects get mismatched. They make debugging and reasoning about components much easier.  Commonly Used Hooks useState → Manage local state useEffect → Handle side effects useContext → Share data without prop drilling useReducer → Complex state management useMemo & useCallback → Performance optimizations  Takeaway: Mastering Hooks isn’t just about knowing them — it’s about respecting their rules. That’s what makes React apps scalable and maintainable. #React #SystemDesign #Frontend #Hooks #JavaScript #WebDevelopment

Understanding your frontend folder structure is key to building maintainable applications! 🚀 This infographic breaks down a clean, scalable setup: 💻 src/: Your application source code. 🏗 components/: Reusable parts of your UI (e.g., buttons, forms). 🧩 pages/: The full layouts for different URL routes in your app. 🧠 redux/ or context/: Where you manage the global state of your application. 🪝 hooks/: Encapsulate reusable, stateful logic. 🌐 api/ & services/: Manage network requests and application logic. A solid structure keeps your codebase organized as your project grows. How do you organize your projects? Let me know in the comments! 👇 #frontend #webdevelopment #coding #reactjs #softwareengineering #fullstack #codeorganisation #ImmediateJoiner #Immediate #angular #javascript #typescript

Have you ever felt frustrated with unwanted re-renders of React components and struggled to find a proper solution? Consider the following insights and share your worst re-render story below. Deep diving into React has taught me more than any tutorial ever could. The more I explored its internals, the more I realized how much was hiding beneath the surface. Re-renders seem simple until your app starts lagging, and you have no idea why. Here’s what I learned the hard way: → Understanding what actually triggers a re-render (it's not just setState) → Why React.memo silently breaks when you pass inline functions or objects → The Context trap that re-renders every consumer even when they don't care about the change → When to reach for useMemo vs useCallback and when to skip both entirely → How the key prop is a reset weapon, not just a list requirement → Architecture patterns that prevent re-renders by design, no memoization needed The deeper you go, the more you realize React rewards curiosity. Every "why is this slow?" question led me to a better mental model. Swipe through the carousel and save the slide that matches your current bug. #React #Frontend #JavaScript #WebDev #LearningInPublic

Most developers think Redux is the only scalable state management solution for React. The real power of Context API in large apps goes unnoticed and can change your approach to React architecture. I’ve seen teams start with Redux only to realize prop drilling is a mess in components that don’t even use that global state. Context API shines by letting you share state in a clean, maintainable way without extra dependencies. One time, I refactored a medium-sized app by replacing several Redux slices with context providers tailored to specific feature areas. The result? Less boilerplate, faster onboarding for new devs, and improved component isolation. Performance-wise, it’s about memoizing selectors and splitting contexts to avoid unnecessary renders. Treat Context like a scalpel, not a hammer, and your app’s performance stays solid. Have you found clever uses for Context API in your projects? What’s your secret to keeping React state clean at scale? 👀 #React #JavaScript #WebDev #Frontend #StateManagement #CodingTips #DeveloperExperience #ReactJS #Technology #Programming #ReactJS #ContextAPI #StateManagement #WebDevelopment #Solopreneur #Developers #FounderLife #Intuz

You wrapped your component in React.memo… but it still re-renders 🤔 I ran into this more times than I’d like to admit. Everything looks correct. You’re using React.memo. Props don’t seem to change. But the component still re-renders on every parent update. Here’s a simple example: const List = React.memo(({ items }) => { console.log('List render'); return items.map(item => ( <div key={item.id}>{item.name}</div> )); }); function App() { const [count, setCount] = React.useState(0); const items = [{ id: 1, name: 'A' }]; return ( <> <button onClick={() => setCount(count + 1)}> Click </button> <List items={items} /> </> ); } When you click the button the List still re-renders. At first glance, it feels wrong. The data didn’t change… so why did React re-render? The reason is subtle but important: every render creates a new array. So even though the content is the same, the reference is different. [] !== [] And React.memo only does a shallow comparison. So from React’s perspective, the prop did change. One simple fix: const items = React.useMemo(() => [ { id: 1, name: 'A' } ], []); Now the reference stays stable and memoization actually works. Takeaway React.memo is not magic. It only helps if the props you pass are stable. If you create new objects or functions on every render, you’re effectively disabling it without realizing it. This is one of those bugs that doesn’t throw errors… but quietly hurts performance. Have you ever debugged something like this? 👀 #reactjs #javascript #frontend #webdevelopment #performance #reactperformance #softwareengineering #programming #coding #webdev #react #typescript

React vs. Redux vs. Redux Toolkit: Which should you use? "Do I need Redux?" is still one of the most common questions in frontend development. State management can be overwhelming, but understanding the evolution of these tools makes the choice much clearer. Here is a straightforward breakdown of the big three: 1️⃣ React State & Context (The Foundation) React’s built-in hooks (useState, useReducer, useContext) are often all you need. The Good: Zero extra dependencies. It is perfect for local component state (like form inputs or UI toggles) and low-frequency global state (like user themes or auth status). The Bad: Relying purely on Context for high-frequency, complex global state can lead to unnecessary re-renders and messy prop-drilling. 2️⃣ Classic Redux (The Legacy Heavyweight) Redux revolutionized how we handle global state by introducing a single, predictable source of truth. The Good: Unmatched predictability and incredible developer tools (time-travel debugging is magic). The Bad: The boilerplate. Writing separate files for actions, action types, and reducers slows down development and frustrates teams. 3️⃣ Redux Toolkit / RTK (The Modern Standard) Redux Toolkit is not a replacement for Redux; it is the official, modern way to write it. It takes everything great about Redux and strips away the pain points. The Good: It drastically reduces boilerplate. Features like createSlice automatically generate your actions and reducers. It includes Immer under the hood (allowing you to write simpler, "mutating" logic that updates state immutably), and it ships with RTK Query for incredibly efficient data fetching and caching. The Verdict: If you are starting a new project that genuinely needs Redux, RTK is the only way you should be writing it. 💡 My Rule of Thumb: Start simple. Build with React's built-in state. When your state starts feeling tangled, difficult to track, or requires passing props through five layers of components (Prop Drilling)—it's time to bring in Redux Toolkit. How is your team handling state management these days? Are you firmly on team RTK, or have you pivoted to lighter alternatives like Zustand or Jotai? Let's discuss in the comments! 👇 #ReactJS #Redux #WebDevelopment #Frontend #SoftwareEngineering #JavaScript