React Reconciliation and Diffing Algorithm Explained

Understanding State and Props in React (Simple Explanation) If you are learning React, two concepts you must understand early are state and props. Props: Props are used to pass data from a parent component to a child component. They are read-only, which means the child cannot modify them. Example: A parent sends a user name to a child component. The child just displays it. State: State is used to store data inside a component. Unlike props, state can change over time. Example: A counter that increases when you click a button uses state. Key Difference: Props are external and immutable. State is internal and mutable. In simple words: Props = Data coming from outside State = Data managed inside the component Understanding this difference helps in building better and scalable React applications. #ReactJS #FrontendDevelopment #SolGuruz #WebDevelopment #JavaScript #Programming #SoftwareEngineering

If Javascript is single-threaded, how can 'await' wait? 🤔 If it actually waited, the whole app would freeze !! Actually, await pauses the function, not the thread. 1. In an async function, when 'await getSomePromise()' is encountered, the rest of the function is scheduled as a microtask (pausing for "awaited" promise) 2. The thread returns to the caller of async function. 3. Once the Promise resolves it enters the microtask queue, to get executed by javascript engine once the call stack becomes empty. 🧠 Mental model: Think of a function as a chapter in a book 📕, Within a chapter, 'await' simply places a bookmark, moves on to other chapters, and comes back later. 📝 I wrote a short blog explaining this step-by-step with code and execution flow here👇🏻 https://lnkd.in/g5q2CjWU #javascript #asyncawait #webdevelopment #promises #frontend #softwareengineering #eventloop #javascriptinternals #programming #coding #microtasks

Most beginners ignore this hook… until they actually need it. useRef in React is like a hidden pocket in your component. It lets you store values that don’t trigger re-renders and gives you direct access to DOM elements. For example: You can focus an input instantly without updating state or re-rendering the component. Think of it like this: useState → updates UI useRef → stores values quietly in the background That’s why it’s perfect for things like: • Managing focus • Tracking previous values • Working with DOM directly Simple concept, but once you understand it your React code becomes cleaner and more efficient. #React #JavaScript #WebDevelopment #Frontend #Coding #100DaysOfCode #Developers #Programming #ReactJS

💡 What is Event Parameter in React? When an event happens in React, React automatically passes an event object to the function. This event object gives details like: 👉 Which element triggered the event 👉 Input value 👉 Mouse position 👉 Prevent default behavior 📌 Example Uses: • Reading input values • Preventing form reload • Handling button clicks • Managing UI interactions ⚡ Event parameter helps you control user interactions precisely. Master this to write professional React logic. Follow TFSC for practical frontend learning. #reactjs #reactevents #javascript #frontenddevelopment #webdevelopment #coding #learnreact #programming #tfsc

💡 What is React Hook Form? React Hook Form is a library that helps you handle forms easily and efficiently in React. 👉 Less code 👉 Better performance 👉 Easy validation 👉 Cleaner logic 📌 Why use React Hook Form? • No unnecessary re-renders • Simple form handling • Built-in validation • Scalable for large forms 📌 How it works: 1️⃣ Register inputs 2️⃣ Handle submit 3️⃣ Validate data 4️⃣ Get form values ⚡ It makes form handling fast, clean, and professional. Follow TFSC to master modern React development. #reactjs #reacthookform #frontenddevelopment #javascript #webdevelopment #coding #learnreact #reactforms #programming #tfsc

Today I was working with React and noticed something interesting. Sometimes a single line of code can make things much simpler and cleaner. Here are 5 small React patterns that I find really useful: 1.Conditional rendering {isLoggedIn && } 2.Ternary rendering {isLoggedIn ? : } 3.Destructuring props const { title, description } = props 4.Rendering lists with map {items.map(item => {item.name})} 5.Passing props using spread <Component {...props} /> React has many features like this that make code shorter and easier to read. The more I explore it, the more I realize how powerful simple patterns can be. #reactjs #javascript #webdevelopment Sheryians Coding School

React code splitting - yeh technique se initial bundle size kam hota hai! Code splitting lets you split your code into smaller chunks that load on demand. React.lazy and Suspense make this easy. Benefits: - Smaller initial bundle - Faster initial load - Better user experience - Only load what's needed Use code splitting for: - Route components - Heavy third-party libraries - Features not needed immediately - Large components But don't overdo it! Too many small chunks can actually slow things down due to network overhead. Find the right balance. Also, remember to handle loading states with Suspense. Users should know something is loading, not see a blank screen! Have you implemented code splitting in your projects? #reactjs #webdevelopment #javascript #frontend #coding #codesplitting #performance #reactlazy #programming #indiancoders #tech

In the world of web development, it’s tempting to jump straight into flashy frameworks like React or Next.js. But lately, I’ve realized that a house is only as strong as its foundation. I’m currently diving deep into JavaScript Fundamentals, and it’s been a game-changer. Re-learning the "why" behind things like Scope and Hoisting, Closures, Asynchronous patterns and so on. Mastering the fundamentals isn't a step backward; it’s the fastest way to move forward. If you understand the core of the language, the frameworks become easy to learn. Are you a "fundamentals first" developer, or do you prefer learning on the fly?

🚀 6 React Hooks that changed how I write code — and will change yours too. If you're still confused about when to use what, here's the simplest breakdown: 🔵 useState → Store & update values. Every re-render starts here. 🌐 useEffect → Talk to the outside world (APIs, DOM, subscriptions). 📦 useRef → Hold a value WITHOUT triggering a re-render. A hidden drawer for your data. 🧠 useCallback → Memoize functions so they don't get recreated on every render. ⚡ useMemo → Cache expensive calculations. Only recompute when dependencies change. 🌍 useContext → Share state globally. No more prop drilling through 5 layers. The moment these clicked for me, my components became cleaner, faster, and way easier to debug. Which hook took you the longest to truly understand? Drop it in the comments 👇 #ReactJS #WebDevelopment #JavaScript #Frontend #Programming #React #SoftwareEngineering #100DaysOfCode #CodeNewbie #TechEducation #FrontendDeveloper #ReactHooks

One of the biggest mistakes new developers make is skipping the documentation. Tutorials are helpful, but official documentation gives you the real understanding of how a framework or library works. When you read the docs, you learn: • Best practices • Real examples • Advanced features • Proper implementation Every great developer I know spends time in the documentation first. 💡 Pro tip: If you want to master tools like React, Next.js, or Vue, make documentation your best friend. What do you prefer? Docs or tutorials? #WebDevelopment #Programming #DeveloperTips #FrontendDeveloper #JavaScript #CodingJourney