React Form Handling: Controlled Components & Validation

One React Hook changed the way I build dynamic forms. And honestly, it saved me from a lot of messy code. Before using useFieldArray in React Hook Form, I used manual state for dynamic fields. At first, it looked manageable. But as the form started growing, the logic became messy very quickly. Adding fields, removing fields, keeping values in sync, and handling validation started taking more effort than expected. The feature was simple, but the code was not. Then I started using useFieldArray. That is when I understood how useful this hook is in real projects. It makes dynamic form handling much cleaner. Add and remove actions become easier. The structure feels more organized. And the code becomes easier to maintain. For me, the biggest lesson was simple: Sometimes a problem feels difficult not because it is truly hard, but because we are solving it in a harder way. If you work with dynamic forms in React, this hook is worth understanding deeply. What React Hook made your code noticeably cleaner? #ReactJS #JavaScript #FrontendDevelopment #ReactHookForm #SoftwareEngineering #WebDevelopment #NextJS

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

🚀 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

In today’s digital world, having an online presence is no longer optional 🚀 If you want to grow your business, the right strategy and execution matter the most 💡 We help businesses scale and grow effectively 👇 @MFT | Micro Folder Technology Follow our page for more valuable insights 🔥 #digitalmarketing #webdevelopment #businessgrowth #entrepreneurship #startup #linkedin #marketingstrategy

🚀 React Quick Revision Here are some important React concepts explained in short 🔹 1) Which is the entry file in React? 👉 In most React apps, the entry file is index.js / main.jsx 👉 It is responsible for rendering the root component: ReactDOM.createRoot(document.getElementById("root")).render(<App />); 🔹 2) What is the datatype of useEffect second argument? 👉 It is an Array useEffect(() => {}, [dependency]); 👉 This array is called the dependency array and controls when the effect runs. 🔹 3) useState syntax explanation (arrow understanding) const [state, setState] = useState(initialValue); 👉 Breakdown: const → variable declaration [state, setState] → array destructuring useState() → hook function setState → function to update state 👉 Arrow meaning: setState is a function → used to update value 🔹 4) Difference between Tag and Component 👉 Tag (HTML Element): <div>Hello</div> Built-in HTML element Lowercase naming 👉 Component (React): <MyComponent /> Custom reusable function Always starts with uppercase Returns JSX #ReactJS #FrontendDeveloper #JavaScript #WebDevelopment #Learning

For a few days, I was working on building a sticky Notes App using Node.js and Express.js, and instead of using plain HTML, I experimented with EJS (Embedded JavaScript templates). While doing that, I noticed some interesting differences between using static HTML and server-side templating with EJS: • With HTML, everything is static and separate • With EJS, I can dynamically render data directly from the backend • Passing variables from Express to views makes the app feel more “real-time” and flexible • Folder structure becomes more organized when separating routes, views, and logic • It feels closer to how real-world backend-driven applications work This project enhanced my understanding of how frontend and backend integrate more seamlessly through the use of templating engines. I would love to hear how others approach structuring Node.js + Express projects with EJS, and if there are any improvements or best practices you would recommend to make this setup more efficient or scalable. #Nodejs #Expressjs #EJS #BackendDevelopment #WebDevelopment #LearningByDoing

𝐓𝐫𝐢𝐜𝐤𝐲 𝐑𝐞𝐚𝐜𝐭 𝐂𝐥𝐨𝐬𝐮𝐫𝐞 𝐈𝐧𝐭𝐞𝐫𝐯𝐢𝐞𝐰 𝐐𝐮𝐞𝐬𝐭𝐢𝐨𝐧 🤔 Many developers understand closures in JavaScript… but get confused when it comes to React. Question: What will be the output of this code? Example 👇 import React, { useState } from "react"; export default function App() { const [count, setCount] = useState(0); const handleClick = () => { setTimeout(() => { console.log(count); }, 1000); }; return ( <> Click </> ); } Now imagine: You click the button 3 times quickly and count updates each time What will be logged after 1 second? Answer 👇 It will log the SAME value multiple times ❌ Why? Because of closure. The setTimeout callback captures the value of count at the time handleClick was created. This is called a “stale closure”. Correct approach ✅ setTimeout(() => { setCount(prev => { console.log(prev); return prev; }); }, 1000); Or use useRef for latest value. Tip for Interview ⚠️ Closures + async code can lead to stale state bugs in React. Good developers know closures. Great developers know how closures behave in React. #ReactJS #JavaScript #Closures #FrontendDeveloper #WebDevelopment #ReactInterview #CodingInterview #ReactHooks

What is Frontend Development? (And Why You Should Learn It) Frontend development is everything you see and interact with on a website or app — the buttons, animations, forms, and layouts. Here's a simple roadmap to get started: 1️⃣ Learn the Basics → HTML (structure), CSS (styling), JavaScript (logic) 2️⃣ Understand the Core Trio → These 3 languages power every website 3️⃣ Pick a Framework → React, Vue, Angular, or Next.js 4️⃣ Master Dev Tools → Git, VS Code, Browser DevTools, npm 5️⃣ Learn State Management → Redux, Zustand, Context API Frontend is the perfect starting point for beginners. You can see results instantly in the browser — no complex setup needed! #FrontendDevelopment #WebDev #HTML #CSS #JavaScript #Coding #BeginnerCoder #TechCareer #LearnToCode

🚀 What is a Polyfill in JavaScript? (And why every frontend dev should care) Ever tried using a modern JS feature… and it just breaks in older browsers? 😅 That’s where Polyfills come in. 👉 A polyfill is a piece of code that adds support for features that a browser doesn’t natively support. 💡 Simple idea: “If the browser doesn’t support it, I’ll implement it.” 🔧 Example: Array.includes() polyfill if (!Array.prototype.includes) { Array.prototype.includes = function (value) { return this.indexOf(value) !== -1; }; } ✔️ Now even older browsers can use includes()! ⚙️ Why Polyfills Matter Ensure cross-browser compatibility Let you use modern JavaScript safely Critical for production-grade apps 🧠 Polyfill vs Transpiler Polyfill → Adds missing functionality Transpiler (Babel) → Converts modern syntax to older syntax 👉 You often need both in real-world apps. 📦 Pro Tip Instead of writing polyfills manually: Use core-js Use CDN like polyfill.io Let Babel handle it automatically ⚠️ Be mindful Polyfills can increase bundle size — use them only when necessary. 🔥 Takeaway Polyfills help you write modern code without breaking older environments — making your app more reliable and user-friendly. #JavaScript #WebDevelopment #Frontend #Coding #SoftwareEngineering #DevTips #100DaysOfCode #Programming #Tech #Developers

🚀 Day 5 of Building React Projects Today I built a Quiz Application using React.js. This project displays multiple-choice questions and calculates the final score based on user answers. ✨ Features: • Multiple-choice quiz questions • Instant answer selection • Score calculation after quiz completion • Simple and responsive UI 🛠 Tech Stack: React.js JavaScript HTML CSS 🌐 Live Demo: https://lnkd.in/dgSFAWTH 💻 Source Code: https://lnkd.in/dvQyFAha #ReactJS #JavaScript #FrontendDevelopment #WebDevelopment #LearningInPublic