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#Useref React Reel by @reactive_codes - Efficiently record data in react state#react #mern #webdevelopment #coding #fullstack Most React developers record form data inefficiently. In this
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@reactive_codes
Efficiently record data in react state#react #mern #webdevelopment #coding #fullstack Most React developers record form data inefficiently. In this video, I explain how to efficiently record data in React state using 2 common approaches: 1️⃣ Creating a separate state variable for each field 2️⃣ Combining all fields into a single state object You’ll understand: ✔ when to use individual state variables ✔ when to use a single object state ✔ performance considerations ✔ scalability in real-world forms ✔ clean and maintainable React patterns If you’re building production-level React apps, this decision matters. 🎓 Learn React & Frontend Engineering in depth: 👉 https://reactivecodes.in/courses 💬 Comment “FORM” and I’ll send you the direct link for the full explanation. 📌 Save this for revision 📌 Share with React developers 📌 Follow for practical frontend engineering
#Useref React Reel by @thefullstackcampus - Just created a React project and feeling confused by the folders? 👀 Let's simplify the default React folder structure. When you create a fresh Reac
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@thefullstackcampus
Just created a React project and feeling confused by the folders? 👀 Let’s simplify the default React folder structure. When you create a fresh React app, you’ll see: 📁 node_modules — Installed packages (don’t edit) 📁 public — Static files like index.html 📁 src — Your main application code Inside src: 📄 main.jsx / index.js — App starting point 📄 App.jsx — Main component 📄 App.css — Component styles Everything you build starts from here. As your project grows, then you create folders like components or pages. Strong fundamentals start with understanding the basics. 💬 Did the React folder structure confuse you at first? Comment YES or CLEAR 👇 📌 Save this for beginners 👥 Follow for simple frontend learning
#Useref React Reel by @reactlessons - Want to write React like a professional from day one? Comment "React" and I'll send you the full lesson plus a components architecture guide that acce
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@reactlessons
Want to write React like a professional from day one? Comment "React" and I'll send you the full lesson plus a components architecture guide that accelerates everything 🚀 One file does everything. That's the problem. Look at your App.js right now. State declarations at the top. Functions in the middle. JSX with headings, inputs, buttons, and lists all crammed together. It works. Nobody's denying that. But scroll through it. It's getting long. Every feature you add makes it longer. Every bug fix means hunting through more lines. In real applications this becomes unmanageable. Files with 500 lines. 1000 lines. Developers scared to touch anything because everything is tangled together. That's not how professionals build apps. The solution: components. Think of components like LEGO bricks. Your app is the final model. Each brick does one specific job. Header brick. Input brick. TodoItem brick. List brick. You assemble them together to create the whole thing. Need to change the header? Touch only the header brick. Other pieces stay untouched. Swap one brick without rebuilding the entire model. We're going to extract the todo item into its own component. That entire li element with the text, the toggle functionality, the delete button, the styling. All of it moves into a separate file called TodoItem. Self-contained. Focused on one job. Reusable anywhere you need it. But how does a component get data? It lives in a separate file. It can't see your state. It can't see your functions. That's where props come in. Properties. Like arguments to a function. The parent component passes data down. The child component receives it and uses it. TodoItem needs the todo text, the index, the toggle function, the delete function. All passed as props. Data flows down from parent to child. One direction. Clean. Predictable. This is how React is meant to be written. Small focused pieces that snap together. This reel is just the trailer. Full lesson 👉 www.projectschool.dev
#Useref React Reel by @techtoolboxhq - Your React component might be re-rendering more than you think 😬 Passing new objects or functions every render creates unstable references - and tha
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@techtoolboxhq
Your React component might be re-rendering more than you think 😬 Passing new objects or functions every render creates unstable references — and that hurts performance. Use useMemo to keep props stable and avoid unnecessary re-renders ⚡ Small change. Big difference. Save this before your next React project 💾 Follow for more practical React performance tips 🚀 #reactjs #javascript #frontenddeveloper #programming #reactdeveloper Have you faced unnecessary re-renders before?
#Useref React Reel by @reactive_codes - How Reducers Works in React.js #react #mern #webdevelopment #web #coding React state gets messy as apps grow that's why reducers exist in react.js
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@reactive_codes
How Reducers Works in React.js #react #mern #webdevelopment #web #coding React state gets messy as apps grow that’s why reducers exist in react.js
#Useref React Reel by @smart_techies_hub - 🚨 A React component re-renders too many times. How do you fix it? Re-rendering is normal in React. Unnecessary re-renders are the real issue. Here'
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@smart_techies_hub
🚨 A React component re-renders too many times. How do you fix it? Re-rendering is normal in React. Unnecessary re-renders are the real issue. Here’s how I approach it professionally: 🧪 1️⃣ Profile Before Fixing Use React DevTools Profiler Identify which component re-renders Check what changed (props, state, context) 👉 Never optimize blindly. 🧠 2️⃣ Check State Placement If state is defined too high in the tree → many children re-render. ✔ Move state closer to where it's actually used ✔ Split large components Architecture matters more than hooks. ⚡ 3️⃣ Stabilize Props (Reference Equality Issues) Common causes: Inline functions Inline objects/arrays ✔ Use useCallback for functions ✔ Use useMemo for objects/derived data Example: const handleClick = useCallback(() => { doSomething(); }, []); 🧩 4️⃣ Use React.memo for Pure Components If a component depends only on props and props don’t change → wrap with React.memo. const Child = React.memo(({ data }) => { return <div>{data}</div>; }); ✔ Prevents unnecessary child renders. 📦 5️⃣ Optimize Context Usage Large context updates trigger all consumers. ✔ Split contexts ✔ Memoize provider value ✔ Use selector pattern 📊 6️⃣ Handle Expensive Computations If filtering, sorting, or heavy logic runs every render: ✔ Wrap inside useMemo ✔ Avoid recalculating unnecessarily 🔁 7️⃣ Verify useEffect Dependencies Wrong dependency array can cause infinite re-renders. ✔ Always check dependency accuracy ✔ Avoid setting state unconditionally inside effects 🛠 8️⃣ Validate in Production Build React 18 StrictMode renders twice in development. Test production build before assuming performance issues. 🔥 Real-World Insight (Senior Approach) In a dashboard project, a component re-rendered 30+ times per state update. Fixes applied: ✔ Moved state lower ✔ Memoized callbacks ✔ Split context ✔ Wrapped heavy components with memo Result → 50–60% render reduction. 💡 Professional Interview Closing Line: “I first measure the re-render cause, then optimize at the architectural level rather than applying memo everywhere.” #smart_techies_hub #frontend_scenario_questions #reactjs #js #trending
#Useref React Reel by @reactlessons - This is the moment React actually clicks. Comment "React" and I'll send you the full lesson plus a props and components guide that makes this second n
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@reactlessons
This is the moment React actually clicks. Comment "React" and I'll send you the full lesson plus a props and components guide that makes this second nature 🚀 Your first custom component. One file. One job. Clean and reusable. In your src folder, create a new file. TodoItem.jsx. Capital T. Convention says component names start with capital letters. File name matches component name. Not required by React, but every professional developer follows this pattern. Consistency matters. Now the skeleton. Export default function TodoItem. This component needs data from its parent. That data comes through props. We destructure exactly what we need: todo, index, onToggle, onDelete. Four pieces of information. Everything this component needs to do its job. Inside the return, the same li element we had before. But instead of referencing state directly, we use props. todo.text for the display. todo.completed for the strikethrough style. onToggle with index for clicking. onDelete with index for the button. Same logic. Different source. The stopPropagation stays. Still need to prevent the delete click from triggering toggle. That bug fix travels with the component. Now back to App.js. Import TodoItem at the top. From dot slash TodoItem. Then find your map function. That entire li block? Delete it. Replace with one clean line: TodoItem component with props passed in. Key equals i for React tracking. Todo equals t passes the data. Index equals i passes the position. onToggle equals toggleTodo passes the function. onDelete equals deleteTodo passes the function. Clean. Readable. Each prop clearly labeled. Save everything. Open the browser. Add todos. Delete them. Toggle them. Strikethrough works. Everything identical to before. But look at your code now. App.js is shorter. Focused on state and logic. TodoItem.jsx handles display. Each file has one responsibility. This is separation of concerns. This is how professional React apps are structured. One component extracted. The pattern repeats for everything else. Header component. Input component. Whatever you need. This reel is just the trailer. Full lesson 👉 www.projectschool.dev
#Useref React Reel by @reactlessons - The best React developers write less code, not more. Comment "React" and I'll send you the full lesson plus a state management guide that teaches you
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@reactlessons
The best React developers write less code, not more. Comment "React" and I'll send you the full lesson plus a state management guide that teaches you when to use useState and when to skip it entirely 🚀 Stop creating state you don't need. Your data already has the answers. Look at your todos array. It's sitting there in state. How many todos exist? The array knows. How many are completed? The array knows that too. You don't need another useState to track these numbers. You just calculate them from what you already have. This is called derived state. Values computed from existing state. No storage. Just calculation. In App.js, above your return statement, write two lines. First: total equals todos.length. That's your count of all todos. Second: completed equals todos.filter, keep only items where completed is true, then .length. That's your count of finished tasks. Two simple calculations. Zero new state declarations. Why not just useState for the count? Tempting thought. But dangerous. That creates two sources of truth. Your todos array is one source. Your count state is another. When you add a todo, todos updates automatically. But your separate count state? It doesn't know anything changed. Now they're out of sync. Bugs appear. Users see wrong numbers. Derived state eliminates this entirely. Every render, the calculation runs fresh. todos changes, the count recalculates. Always accurate. Always in sync. Impossible to have stale data. Now display it. In your JSX, add a paragraph above the input. Curly braces, completed, slash, total, "completed". Save the file. Open the browser. Add some todos. The count updates. Mark one complete. The completed number increases. Delete one. Total decreases. Toggle another. Numbers shift. All automatic. All correct. You didn't write any update logic. The math just runs every render. This is the React mindset. Don't store what you can calculate. Less state means fewer bugs. Fewer bugs means happier developers. This reel is just the trailer. Full lesson 👉 www.projectschool.dev
#Useref React Reel by @debuggerwala - 🚀 React Interview Topic: Controlled vs Uncontrolled Components When building forms in React, one of the most important concepts is: ✅ Controlled Co
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@debuggerwala
🚀 React Interview Topic: Controlled vs Uncontrolled Components When building forms in React, one of the most important concepts is: ✅ Controlled Components vs ⚡ Uncontrolled Components Both work… but they solve problems differently. 🎯 Controlled Component (React State Driven) In a controlled component: Input value is stored in React state React becomes the single source of truth Example: const [value, setValue] = useState(""); <input value={value} onChange={e => setValue(e.target.value)} /> ✅ Best for: ✔ Form validation ✔ Predictable UI behavior ✔ Complex forms ⚡ Uncontrolled Component (DOM Ref Driven) In an uncontrolled component: Input value is managed by the DOM itself React accesses it using useRef Example: const inputRef = useRef(); <input ref={inputRef} /> ✅ Best for: ✔ Quick setup ✔ Simple forms ✔ Less boilerplate code 💡 Key Difference 🔵 Controlled → React controls the input 🟠 Uncontrolled → DOM controls the input 🎥 I explained this topic in detail with examples on my YouTube channel: 🔗 Watch here: (Paste your link) 💬 Which one do you use more in real projects — Controlled or Uncontrolled? [Reactjs,ja, developer,reactdeveloper, frontend, web development] #ReactJS #JavaScript #FrontendDevelopment #WebDevelopment #ReactDeveloper CodingInterview SoftwareEngineering ReactForms Programming TechCommunity FullStackDeveloper LearnReact DeveloperTips
#Useref React Reel by @thefullstackcampus - Starting React JS is easier than you think 🚀 In this reel, we set up a React project from scratch and get the app running in minutes. Just a few co
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@thefullstackcampus
Starting React JS is easier than you think 🚀 In this reel, we set up a React project from scratch and get the app running in minutes. Just a few commands and you’re ready to build modern UIs. Every React journey starts here — the setup. 💬 Are you learning React right now? Comment STARTED or PLANNING 👇 📌 Save this for your first React project 👥 Follow for simple frontend learning
#Useref React Reel by @and_codes - Want to improve your React app performance? In this short video, you'll learn: • How to prevent unnecessary re-renders • When to use React.memo • Why
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@and_codes
Want to improve your React app performance? In this short video, you’ll learn: • How to prevent unnecessary re-renders • When to use React.memo • Why useCallback and useMemo matter • How code splitting improves load time • Why production builds are important These simple optimization techniques can make your React applications faster and more efficient. Follow for more React tips, frontend tutorials, and web development content. #ReactJS #WebDevelopment #Frontend #JavaScript #Programming #Shorts
#Useref React Reel by @code_with_nishan - 🚨 If you're learning React and don't know these Hooks… you're already behind. Most beginners try to memorize tutorials. But real **React developers u
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@code_with_nishan
🚨 If you’re learning React and don’t know these Hooks… you’re already behind. Most beginners try to memorize tutorials. But real **React developers understand the core hooks that power almost every modern React app. ⚡ The hooks every developer must know: • useState → manage component state • useEffect → handle API calls & side effects • useContext → access global data • useRef → work with DOM elements • useMemo / useCallback → performance optimization • useReducer → complex state management 💡 Pro tip: If you master these hooks, you can understand 80% of React projects. 📌 Save this post so you always have the React Hooks cheat sheet. Follow for more simple coding breakdowns 🚀 #reactjs #javascriptdeveloper #webdevelopment #codingtips #learncoding

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