JavaScript Mini Apps: Dark Mode Toggle & Sticky Notes

Day 10 of my JavaScript learning journey 🚀 Built a Step Progress Bar using HTML, CSS, and JavaScript. This project focuses on DOM manipulation and dynamic UI updates where users can navigate between steps and the progress bar updates accordingly. Every small project is helping me understand JavaScript better and move one step closer to becoming a Frontend Developer. 💻 Git-Hub Repo Link: https://lnkd.in/geZqCnQ9 #JavaScript #WebDevelopment #FrontendDeveloper #CodingJourney #100DaysOfCode

Built a simple To-Do List App using HTML and JavaScript. where users can add and delete tasks dynamically. While building this project, I practiced DOM manipulation, event handling, and dynamically creating elements in JavaScript. Small projects like this help strengthen the basics. 🚀 #javascript #webdevelopment #frontend #coding #learningbydoing

⚛️ React vs JavaScript A common confusion for many developers starting frontend is the difference between React and JavaScript. JavaScript is a programming language used to handle logic, functionality, and DOM manipulation. React, on the other hand, is a JavaScript library used to build user interfaces using components. In simple terms: JavaScript = Language React = Library built on JavaScript React simplifies UI development by making it component-based and efficient. Understanding this difference helps in building a strong frontend foundation. Which one did you start with — JavaScript or React? 👨💻 #Reactjs #JavaScript #Frontend #Webdevelopment #Softwaredevelopment

How JavaScript really works behind the scenes ⚙️🚀 As a frontend developer, I used JavaScript daily… But I never truly understood what happens behind the scenes 🤔 Recently, I explored how JavaScript actually works 👇 1️⃣ User Interaction User clicks a button → event gets triggered 2️⃣ Call Stack Functions are pushed into the call stack and executed one by one (LIFO) 3️⃣ Web APIs Async tasks like setTimeout, fetch run outside the call stack 4️⃣ Callback Queue After completion, async tasks move into the queue 5️⃣ Event Loop It checks if the call stack is empty and pushes tasks back to it 6️⃣ DOM Update Finally, the browser updates the UI 🎯 Understanding this flow changed the way I write JavaScript 💻 Still learning and improving every day 🚀 What JavaScript concept confused you the most? 👇 #javascript #webdevelopment #frontenddeveloper #coding #learning

JavaScript Event Loop – Quick Example Understanding the Event Loop is important for writing efficient asynchronous JavaScript. Example: console.log("Start") const prom = new Promise((res) => res(true)) setTimeout(() => console.log("setTimeout"), 0) process.nextTick(() => console.log("nextTick")) queueMicrotask(() => console.log("microtask")) console.log(prom) Output order will be: Start Promise { true } nextTick microtask setTimeout Why? Because JavaScript processes tasks in this order: 1. Synchronous code 2. Microtasks (nextTick, Promises, queueMicrotask) 3. Macrotasks (setTimeout, setImmediate) Understanding this helps when debugging async issues in frontend apps. #javascript #webdevelopment #frontend #vuejs #eventloop

🚀 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

🚀 5 Frontend Skills Every Beginner Should Focus On When I started learning frontend development, I realized that jumping into frameworks too quickly can make things harder. Here are 5 important skills every beginner should focus on first: 1️⃣ HTML – Semantic structure 2️⃣ CSS – Flexbox & Grid layouts 3️⃣ JavaScript – Core fundamentals 4️⃣ Responsive design – Mobile-friendly websites 5️⃣ Git & GitHub – Version control Strong fundamentals make learning frameworks like React much easier later. What frontend skill helped you the most? #WebDevelopment #FrontendDeveloper #LearningJourney

🚀 Polyfills in JavaScript Ever faced this? 😵 👉 Code works perfectly in Chrome 👉 But breaks in older browsers Let’s fix that 👇 🧠 What is a Polyfill? 👉 A polyfill is a piece of code that adds support for modern JavaScript features in older browsers ⚡ Why do we need it? 👉 Not all browsers support new features 👉 Polyfills help bridge that gap 💡 Example: 👉 Modern method: Array.prototype.includes() ❌ Not supported in older browsers 🛠️ Solution: 👉 We create our own version (polyfill) 👉 So older browsers can also use it 🔥 Key Understanding: 👉 If a feature doesn’t exist 👉 We write our own implementation ⚡ Where is it used? ✔ Babel ✔ core-js ✔ Legacy browser support 🚨 Important Note: 👉 Polyfills increase bundle size 👉 Use only when needed 💡 One line to remember: 👉 “Polyfill = Backward compatibility for modern JavaScript” 💬 Did you know this before? 📌 Save this for interviews (very important concept) #javascript #webdevelopment #frontend #coding #programming #javascriptdeveloper #learncoding #developers #100DaysOfCode

Built a simple Bubble Game using JavaScript. Small projects like this help strengthen problem-solving and frontend development skills. Looking forward to building more interactive projects! #JavaScript #WebDevelopment #Frontend

💻 The Web Development Journey It usually starts small… 🏗 HTML – building the basic structure 🎨 CSS – making it look beautiful ⚡ JavaScript – adding logic and interactivity Then things start getting bigger… ⚛️ React – building complex, dynamic interfaces 🚀 Next.js – creating fast, scalable, production-ready applications Every step adds more power, more complexity, and more possibilities. What starts as a small “house” of code slowly grows into a complete digital city of applications. 🌆 The journey isn’t easy, but every technology you learn becomes another brick in the system you build. Keep building. Keep learning. 🚀 #WebDevelopment #FrontendDeveloper #JavaScript #ReactJS #NextJS #CodingJourney #Programming