React Basics: State and Re-renders with useState

🔐 Password Generator using React.js 🚀 Just built a Password Generator using React.js while practicing core React hooks 💻✨ 🔧 What I used: useState → to manage password length & options useCallback → to optimize password generation Conditional logic → numbers & characters toggle 🎯 What this project taught me: Better understanding of state management How useCallback improves performance Writing cleaner & reusable logic Small projects like this make React concepts much clearer 🔥 Next step: adding copy-to-clipboard & UI improvements 🚀 #ReactJS #JavaScript #WebDevelopment #FrontendDeveloper #LearningReact #ReactHooks #PasswordGenerator #100DaysOfCode

DAY 10 OF POSTING REACT CONTENT ⚛️ WHERE DOES REACT KEEP TRACK OF CHANGING VALUES? 🤔 React updates only what changes. But for that, it needs to know what changed. So React stores changing values in a special place. That place is called state. State is just: 👉 a value React keeps 👉 while the page is running 👉 and watches for changes When state changes, React updates the needed part of the screen. That’s it. No magic. No extra meaning. 💬 Does this make the idea of “state” feel simpler now? #ReactJS #ReactBasics #FrontendDevelopment #JavaScript #LearnInPublic #WebDevelopment #CodingJourney

DAY 5 OF POSTING REACT CONTENT ⚛️ While learning React, one thing becomes very clear: 👉 understanding var, let, and const is not optional. So I made one simple table to memorize the differences easily — no searching, no confusion, all in one place. This helped me understand: why var is avoided when let actually makes sense why const is the default choice in React 💬 Save this if it helps you. Feel free to correct me or add anything I missed in the comments. #ReactJS #JavaScript #FrontendDevelopment #LearnInPublic #WebDevelopment #CodingJourney #SoftwareEngineering

Day 19 Topic : React Hooks Post : Why Hooks Simplify logic Today I explored React Hooks and understood why they are a game-changer in modern React development. Hooks allow us to use state, lifecycle features, and reusable logic inside functional components—making code cleaner, simpler, and easier to maintain. This is the modern way of writing React applications ✨ #ReactJS #ReactHooks #JavaScript #FrontendDevelopment #WebDevelopment #MERNStack #LearningInPublic #CodeNewbie #DeveloperJourney #FullStackDeveloper #ReactLearning #TechSkills #UIDevelopment

🚀 Understanding React Hooks – A Must-Know for Every React Developer React Hooks changed the way we write React components by allowing us to use state and lifecycle features in functional components. Here are the most commonly used React Hooks 👇 🔹 useState – Manage component state 🔹 useEffect – Handle side effects (API calls, subscriptions) 🔹 useContext – Avoid props drilling & manage global state 🔹 useRef – Access DOM elements & persist values 🔹 useMemo – Optimize heavy calculations 🔹 useCallback – Prevent unnecessary re-renders 🔹 useReducer – Manage complex state logic ✨ Why Hooks? ✅ Cleaner code ✅ Better reusability ✅ Improved performance ✅ No need for class components If you’re learning React / Next.js, mastering hooks is non-negotiable 💯 👉 Save this post & share with fellow developers! Hashtags: #ReactJS #JavaScript #WebDevelopment #FrontendDevelopment #ReactHooks #NextJS #LearningInPublic #Developers

🚫 Stop using querySelector in React! In React, you shouldn’t manipulate the DOM like we do in plain JavaScript (querySelector, getElementById, etc.). Why? Because React uses a Virtual DOM and manages the real DOM for you. Direct DOM manipulation can lead to bugs and unexpected behavior. ✅ The right approach: useRef useRef gives you safe and direct access to a DOM element while staying aligned with React’s lifecycle. ✨ Benefits: Cleaner code Predictable components Easier maintenance Think in React way, not JavaScript way 😉 #React #JavaScript #WebDevelopment #Frontend #CleanCode #ReactHooks #Learning

React Hooks Made Easy – Visual Guide Learning React Hooks can feel confusing at first 🤯 So I created this simple visual cheat-sheet to understand them easily 👇 🔹 useState – Store & update values 🔹 useEffect – Run side effects (API, lifecycle) 🔹 useContext – Share data without props drilling 🔹 useRef – Access DOM elements directly 🔹 useMemo – Save heavy calculations 🔹 useCallback – Save functions for performance 💡 If you are a beginner or transitioning into React, this image will help you understand: What each hook does When to use which hook How React thinks internally 👉 Save this post for revision 👉 Share it with someone learning React I’ll keep sharing easy React + Web Dev content 🚀 #ReactJS #ReactHooks #WebDevelopment #Frontend #JavaScript #LearnReact #CodingBeginners #100DaysOfCode

🚀 Day 17 | React.js Topic: Props Post:Passing Data in React Today, I learned how props work in React and how they help components communicate with each other. Props allow data to flow from parent to child components, making UI blocks dynamic, reusable, and easy to manage.Understanding props is a key step toward building scalable and well-structured React applications. #ReactJS #ReactProps #FrontendDevelopment #JavaScript #WebDevelopment #MERNStack #LearningInPublic #ReactDeveloper #UIComponents #CodeJourney #TechLearning #ModernWeb #DeveloperLife

"useEffect" is one of the most misunderstood hooks in React. Most beginners think it’s for “running code after render” but that mindset causes bugs and unnecessary re-renders. A better way to think about "useEffect" It synchronizes your component with something outside React. Good use cases: Fetching data from an API Subscribing to events Updating document.title Cleaning up listeners Rule of thumb: If your logic doesn’t interact with the outside world, it probably doesn’t belong in "useEffect". Understanding this early makes your React code cleaner, predictable, and easier to maintain. #React #WebDevelopment #Frontend #JavaScript #ReactHooks