Why React Form Inputs Lose Values When Reordered

DAY 12 React Renders Are Just Function Calls REACT RENDERS ARE JUST FUNCTION CALLS A React component is just a function. Rendering is just calling that function. Strip away all the magic — a React functional component is literally a JavaScript function that returns JSX. When React "renders" it, it calls the function. The output (JSX) is transformed into React.createElement() calls, producing a plain object description of the UI. Nothing is painted yet at this stage. React is just building a description. The DOM work comes later. Understanding that rendering = function call demystifies hooks, closures, and why the order of hooks must never change. Did this mental model shift how you think about React? #ReactInternals #JSX #JavaScript #WebDevelopment

🚀 Learning React Step by Step! Today I practiced a simple but powerful concept — building a small counter-based feature using React. Here’s what I worked on: 🔹 Managing state to track user clicks 🔹 Updating UI dynamically based on user interaction 🔹 Displaying different messages based on conditions It’s interesting to see how just one value (state) can control multiple parts of the UI! Small steps, but each one is helping me understand how React works behind the scenes 💻 Looking forward to building more interactive features! #React #WebDevelopment #FrontendDevelopment #JavaScript #LearningInPublic

⚛️ useState Hook in React — Made Simple State is what makes your UI dynamic and interactive. With useState, you can: • Store data inside a component • Update the UI instantly • Build interactive applications Example: const [count, setCount] = useState(0); 👉 When the state updates, React automatically re-renders the component. Props pass data. State manages it. Are you using useState effectively in your projects? #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment #ReactHooks #Coding

React 19.2 introduces the <Activity> component, which eliminates the issue of losing form state when switching tabs. This update encourages developers to stop unmounting components, offering a new approach to handle state effectively. #ReactJS #Javascript #FrontendDeveloper #React19 #WebPerformance #CodingTips #SoftwareArchitecture #StateManagement #JS #ProgrammingLife

Why React components re-render 🤔 A component re-renders when it runs again to update the UI. Main reasons: • State changes • Props changes • Parent component re-renders Key insight: Re-renders are a normal part of how React works. But unnecessary re-renders can impact performance. Simple rule: Expected re-render → fine ✅ Unnecessary re-render → avoid ❌ Small concept, big impact ⚡ #ReactJS #FrontendDevelopment #JavaScript #ReactHooks #Performance #LearningInPublic

How to prevent unnecessary re-renders in React ⚛️ After understanding why components re-render, the next step is learning how to control unnecessary ones. ⸻ 🔹 React.memo It helps prevent a component from re-rendering when its props haven’t changed. ⸻ 💡 Why it matters: Unnecessary re-renders can affect performance, especially in larger or complex components. ⸻ 🧠 Simple understanding: Same props → no re-render Changed props → re-render ⸻ ⚠️ Important: React.memo is useful, but should be used only when needed. ⸻ Small optimizations can make a big difference ⚡ #ReactJS #FrontendDevelopment #JavaScript #ReactHooks #Performance #LearningInPublic

⚛️ Props in React — Explained Simply Props are how components communicate in React. They allow you to: • Pass data from parent to child • Build reusable components • Keep your UI dynamic and clean 👉 Important: Props are read-only and should not be modified. Example: 📌 Think of props like function arguments — they help you customize components. Are you using props effectively in your projects? #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment #Coding #ReactTips

💡 𝗧𝗶𝗽 𝗼𝗳 𝘁𝗵𝗲 𝗗𝗮𝘆 — 𝗥𝗲𝗮𝗰𝘁 𝗗𝗶𝗱 𝘆𝗼𝘂 𝗸𝗻𝗼𝘄? In React, 𝗳𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝘀 𝗱𝗲𝗳𝗶𝗻𝗲𝗱 𝗶𝗻𝘀𝗶𝗱𝗲 𝗰𝗼𝗺𝗽𝗼𝗻𝗲𝗻𝘁𝘀 𝗮𝗿𝗲 𝗿𝗲𝗰𝗿𝗲𝗮𝘁𝗲𝗱 𝗼𝗻 𝗲𝘃𝗲𝗿𝘆 𝗿𝗲𝗻𝗱𝗲𝗿. This means passing them as props can trigger unnecessary re-renders in child components. 🔧 𝗕𝗲𝘀𝘁 𝗽𝗿𝗮𝗰𝘁𝗶𝗰𝗲: - Use "useCallback" to memoize functions when passing them down - Only do this when necessary (e.g., with "React.memo" or dependency arrays) Not every function needs memoization—but knowing when it matters is key. #React #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment #PerformanceOptimization #SoftwareEngineering #CodingTips #FullstackDeveloper

🚀 Day 36 — #React_Refs Today I learned about React Refs 🔗 Ref means reference. Since React is a frontend library, sometimes we need to directly interact with the DOM elements. Refs provide a way to access DOM nodes or React elements created in the render method. 🧠 Why Refs are Useful 🔹 Managing focus 🔹 Text selection 🔹 Media playback 🔹 Triggering animations 🔹 Integrating third-party DOM libraries ✅ Important Notes 🔹 Refs directly interact with the DOM 🔹 They work imperatively, not declaratively 🔹 They bypass normal React state updates 🔹 Overusing refs is not recommended because it may affect performance 💡 Refs are powerful for special DOM-related tasks where state-based rendering is not enough. 🔥 Another important step toward mastering advanced React concepts. #React #ReactRefs #FrontendDevelopment #JavaScript #WebDevelopment #10000 Coders

React allows accessing the latest props and states in useEffect/useLayoutEffect without causing re-renders. The useEffectEvent hook will help achieve this. The hook helps extract non-reactive logic from useEffect webhooks. Non-reactive logic refers to when we don't want to perform any action. The useEffectEvent hook wraps a callback function and returns an Effect Event function, and whenever it gets called, the function has access to the latest props and state. So, it won't trigger a re-render, unlike in the case of dependency arrays. But it's not the replacement of the dependency array, as that is usually required to trigger effects. You should try it in your workflow as per the use cases. #react #javascript #frontend #hooks