🌐 What is DOM in React.js? Before understanding React deeply, it’s important to understand the DOM (Document Object Model). The DOM represents a web page as a tree structure, where every HTML element is a node that JavaScript can interact with. 🧠 In simple terms: 👉 DOM = Structure of your web page 👉 It allows you to read, update, style, and handle events ⚙️ How it works: When a browser loads a webpage: 1️⃣ HTML is parsed 2️⃣ Converted into a DOM tree 3️⃣ JavaScript can interact with it 🚀 Why it matters in React? Directly updating the DOM is slow and expensive. That’s why React uses: ✔ Virtual DOM ✔ Efficient updates ✔ Reconciliation to update only the changed parts of the UI 💡 Key Takeaway Understanding DOM is the first step to understanding how React actually works behind the scenes. Still learning. Still building. 🚀 — Anuj Pathak #reactjs #javascript #webdevelopment #frontenddevelopment #softwareengineering #developersoflinkedin #programming #techlearning #coding #learninginpublic

Building a Weather App using JavaScript 🌦️ As part of my learning journey, I built a Weather App using JavaScript, HTML, and CSS by integrating a real API. 🚀 Features: • Search weather by city name • Real-time data using API • Displays temperature, humidity, wind, pressure, visibility, and more • Dynamic UI updates using DOM manipulation 🧠 What I Learned: • Working with APIs using fetch() • Handling async/await in JavaScript • Parsing and using JSON data • Updating UI dynamically with DOM • Basic error handling (invalid city cases) Learning with guidance from Hitesh Choudhary and Piyush Garg at Chai Aur Code #JavaScript #WebDevelopment #FrontendDevelopment #APIs #DOM #AsyncJavaScript #BuildInPublic #LearningInPublic#Projects #ChaiAurCode

⚡ Understanding Throttle in JavaScript – Smooth Performance Matters! Ever faced laggy scroll events or too many function calls firing at once? That’s where throttling comes into play! 🚀 I created this visual to show how a throttle function controls execution frequency — ensuring a function runs at most once within a specified time interval. 🧠 How it works: No matter how many times an event (like scroll) is triggered, the function executes only once every defined delay (e.g., 300ms). This keeps your app smooth and prevents unnecessary UI updates. 💡 Optimization Tip: Instead of new Date().getTime(), prefer Date.now() as it avoids creating a new object and is more efficient, especially in high-frequency events. 🔥 Perfect for: • Scroll events • Resize handlers • Mouse movements 👇 Check out the visual to understand it better. #JavaScript #Throttle #WebDevelopment #PerformanceOptimization #FrontendDevelopment #CleanCode #JSDev #CodingTips #100DaysOfCode #ReactJS #MERNstack

🚀 Just Built a Random Advice Generator using JavaScript & API! I recently built a small project to practice JavaScript API integration. This project fetches random advice using the Advice Slip API and displays it in a simple responsive UI. 🔹 Features • Fetches advice using Fetch API • Uses Async / Await for API handling • Button loading state while fetching data • Random background color change 🎨 • Fully responsive design 📱 🛠 Tech Stack HTML • CSS • JavaScript • Fetch API 📡 API Used https://lnkd.in/dhQVZzs9 🌐 Live Demo 👉 https://lnkd.in/dPePU2n5 💻 GitHub Repository 👉 https://lnkd.in/dJ7nNPCe This project helped me improve my understanding of JavaScript API calls, async programming, and DOM manipulation. I’ll continue building more projects to strengthen my frontend development skills. #javascript #webdevelopment #frontenddevelopment #api #100DaysOfCode #coding

🚀 Built a Simple To-Do App Today! Today I worked on strengthening my JavaScript fundamentals by building a basic To-Do List application from scratch. Here’s what I implemented: ✅ Fetched data from a JSON source ✅ Added a checkbox feature to mark tasks as completed (with strike-through effect) ✅ Implemented a delete button to remove tasks dynamically ✅ Created an input field to add new tasks, which get pushed into the array and displayed instantly on the UI This project helped me understand DOM manipulation, event handling, and working with arrays in a much better way. Small steps, consistent progress 💪 Looking forward to building more real-world projects! #JavaScript #WebDevelopment #FrontendDevelopment #LearningInPublic #CodingJourney

JavaScript events like scroll, resize, and typing can fire hundreds of times per second. If we run heavy functions on every event, the app can become slow and inefficient. Two common solutions to control this are: Debounce and Throttle Debounce Runs the function only after the event stops firing for a specific time. Example: Search input autocomplete. Throttle Runs the function at most once in a fixed time interval, even if the event keeps firing. Example: Scroll event handling. Quick difference: Debounce → waits for user inactivity Throttle → limits how often a function can run Using these techniques improves performance, user experience, and efficiency in real-world applications. Follow for more JavaScript concepts explained visually. 🚀 #javascript #webdevelopment #frontenddeveloper #coding #softwareengineering

🧠 JavaScript Closures — The Concept That Feels Confusing (Until It Clicks) Closures are not magic… they’re just how JavaScript remembers things. 👉 Definition: A closure is when a function “remembers” variables from its outer scope even after that outer function has finished executing. 💻 Example: function outer() { let count = 0; return function inner() { count++; console.log(count); }; } const counter = outer(); counter(); // 1 counter(); // 2 counter(); // 3 🤯 Why this works? Even though "outer()" is done, the "inner()" function still has access to "count". That’s a closure. 🔥 Real Use Cases: ✔ Data privacy (like private variables) ✔ Creating counters ✔ Maintaining state in functions ✔ Used heavily in React (hooks concept) 💡 Simple Way to Remember: 👉 “A function + its remembered environment = Closure” I learned this concept from 👉 Sheryians Coding School #javascript #frontend #webdevelopment #coding #developers #100DaysOfCode

Just built a Quiz Game using HTML, CSS, and JavaScript! This project helped me strengthen my understanding of core front-end development concepts, especially how JavaScript interacts with the DOM to create dynamic user experiences. What I learned: • Manipulating the DOM to update content dynamically • Handling user interactions with event listeners • Managing application state (score, current question, progress) • Structuring clean and reusable code • Debugging real issues (which taught me a lot ) 🛠️ Tools & Technologies: • HTML • CSS • JavaScript The app includes: ✅ Interactive questions ✅ Real-time score tracking ✅ Progress bar ✅ Final results screen with feedback This project reminded me that small bugs can break everything — but solving them is where real learning happens. Looking forward to building more projects and improving my skills. #WebDevelopment #JavaScript #FrontendDevelopment #CodingJourney #100DaysOfCode

"JS Fundamentals Series #4: Closures & First-Class Functions" Ever wondered how a function remembers variables even after its parent has finished executing? That's the magic of Closures - one of the most powerful concepts in JavaScript. 👉 Closures: A closure is formed when a function remembers the variables from its lexical environment, even after the outer function has returned. 👉 First-Class Functions: In JavaScript, functions are treated like any other value - they can be assigned to variables, passed as arguments, or returned from other functions 🔹Explanation - Closures combines a function with its surrounding scope. - They allow data privacy and state retention. - First-class functions make higher-order functions possible (functions that take or return another functions). 🔹 Example function outer() {  let count = 0;  return function inner() {   count++;   return count;  } } const counter = outer(); console.log(counter()); // 1 console.log(counter()); // 2 Here, inner() remembers count even after outer() has finished — that’s a closure in action. 🔹Why It Matters - Enables powerful patterns like currying, memoization, and event handling. - Helps write modular, reusable, and maintainable code. - Essential for understanding modern frameworks like React. 💡 Takeaway: Closures aren’t just theory — they’re the backbone of how JavaScript manages state and builds advanced patterns. #JavaScript #WebDevelopment #Frontend #ReactJS #CodingTips #DeveloperCommunity #NamasteJS #LearningJourney #TechExplained #CareerGrowth "Closures: Functions carry their lexical environment with them 👇"