How to generate buttons dynamically with React

Excited to share the latest in my GenZ JavaScript Series! 🚀 In today's video, we're tackling the absolute foundation of ReactJS: Your First Component. Whether you're new to React or need a solid refresher, this lesson covers functional components, JSX, and best practices for building reusable UI. It's crucial for anyone looking to master modern web development. https://lnkd.in/gUwD-mUq #GenZJavaScript #ReactJS #WebDevelopment #Frontend #Coding #JavaScript #Tutorial #LinkedInLearning #Developer"

🧠 5 JavaScript Concepts Every React Developer Must Master If React feels confusing sometimes, it’s usually because of missing JavaScript fundamentals. Here are 5 core concepts that make React click 👇 1️⃣ Destructuring Easily extract props, state, or nested data, clean and readable code. 2️⃣ Array Methods (map, filter, reduce) Used everywhere in React lists, rendering, and transformations. 3️⃣ Closures Understand them, and you’ll understand hooks like useState and useEffect. 4️⃣ Promises & async/await Mastering async code makes API calls and loading states effortless. 5️⃣ The Spread Operator (…) Helps in updating state immutably and merging objects or arrays safely. 💡 Master these, and React stops feeling like “magic.” 👉 Which of these was hardest for you to grasp at first? #JavaScript #ReactJS #FrontendDevelopment #WebDev #LearnToCode #100DaysOfCode

🔁 The Secret Behind JavaScript’s Asynchronous Magic — The Event Loop ⚙️ JavaScript is single-threaded, yet it handles asynchronous tasks like API calls, timers, and promises smoothly. How? 🤔 👉 The answer: The Event Loop Here’s how it works 👇 1️⃣ Call Stack → Executes synchronous code 2️⃣ Web APIs → Handles async tasks like fetch, setTimeout 3️⃣ Callback Queue (Macrotasks) → Stores completed async callbacks 4️⃣ Microtask Queue → Stores promises & runs before macrotasks 🧩 Example: console.log("Start"); setTimeout(() => console.log("Timeout"), 0); Promise.resolve().then(() => console.log("Promise")); console.log("End"); Output: Start → End → Promise → Timeout ✅ 👉 Promises (microtasks) run before timeouts (macrotasks) 💡 In short: The Event Loop is JavaScript’s traffic controller — managing async code so your app stays smooth and responsive. 🚀 #JavaScript #WebDevelopment #Frontend #AsyncProgramming #ReactJS #NodeJS #Coding

⚛️ React Isn’t Magic — It’s Just Smarter JavaScript When I first heard about React, I thought it was another big library to learn. But soon I realized React is just JavaScript made smarter and cleaner. ⚡ Instead of writing long HTML and JS separately, React lets you: 👉 Write UI with simple functions 👉 Manage everything inside reusable components 👉 Keep your code organized and easy to handle It’s not about learning something new, it’s about thinking simpler. Once you get it, you’ll start seeing how React helps you organize your JavaScript beautifully! 💡 #React #JavaScript #WebDevelopment #Frontend #LearningJourney #Coding

🔥 Callback Hell one of the first nightmares every JavaScript developer faces In JavaScript, callbacks are functions passed as arguments to handle asynchronous tasks. They work fine... until you start nesting them 👇 getUser(id, (user) => { getPosts(user.id, (posts) => { getComments(posts[0].id, (comments) => { console.log(comments); }); }); }); Looks familiar? 😅 That’s Callback Hell — deeply nested callbacks that make code hard to read, debug, and maintain. 💡 How to fix it: Use Promises or async/await for cleaner and more readable async code. const user = await getUser(id); const posts = await getPosts(user.id); const comments = await getComments(posts[0].id); Same logic — but much more elegant ✨ Callback Hell teaches one of the best lessons in JavaScript: Write async code that reads like sync code. Have you ever refactored a callback mess into async/await? #JavaScript #WebDevelopment #Frontend #React #ReactJS

JavaScript Closures: It felt abstract — like some mysterious power functions had. 👉 Think of a closure like a backpack your function carries. Inside that backpack are all the variables it had access to when it was created — and even when it travels elsewhere (gets called later), it still remembers what’s inside. That means your function can “remember” things, even after its parent scope is gone. It’s not magic — it’s just JavaScript being smart about memory and context. #JavaScript #ReactJS #LearningInPublic #WebDevelopment

💡 The 2 JavaScript Methods That Made React Click for Me When I started learning React, I thought the hardest part would be understanding components, props, or hooks. Turns out, what helped everything click were two simple JavaScript methods: ✨ map() and filter() They show up everywhere in React: 🔹 Rendering a list? → map() 🔹 Showing only active items? → filter() Combine them, and your UI logic suddenly feels effortless 👇 users .filter(u => u.active) .map(u => <UserCard key={u.id} data={u} />); If you’re learning React, don’t overlook these two. They’re small, but they completely change how you think in React. 👇 What was your “aha!” moment when you started learning React? #React #JavaScript #Frontend #WebDevelopment #CodingJourney #LearningReact

🚀 Understanding Functions in JavaScript 👇 🔹 First order functions These are regular functions that take inputs, do something, and return an output. ❌ Don’t accept or return other functions. 🔹 Higher order functions A higher order function is any function that either 📌 takes another function as an argument, or 📌 returns a function as its result 📌 or both Examples: map(), filter(), reduce() 🔹 First class functions Functions in JavaScript can be 1️⃣ stored in variables, 2️⃣ passed as arguments or 3️⃣ even returned from other functions. That’s what first-class means, these functions are "first class citizens 😎" If you understand this trio, you understand the core. #JavaScript #Frontend #WebDevelopment #ReactJs #Angular #LearnToCode #backend

💥 A Subtle Runtime Behavior Every JavaScript Developer Should Know This is a behavior of the JavaScript runtime, and I’m going to explain how it works using an example. Let’s see why JavaScript’s single threaded nature can cause unexpected timing delays. When we call something like, setTimeout(() => console.log("Timeout done!"), 100); 👉 here’s what actually happens under the hood, 1. The core engine (like V8 in Chrome) executes our JavaScript code line by line in the Call Stack. 2. Once the thread reaches it, function immediately gets moved to the Web API, and the timer starts counting (100 ms). Meanwhile, the main thread continues executing the rest of your code line by line (synchronously). 3. When the 100ms timer finishes, the callback is moved to the Callback Queue (Task Queue). 👉 Here’s the important part: That callback does NOT go into the Microtask Queue because it’s a macro task. The Microtask Queue is reserved for things like Promises and queueMicrotask(), which have higher priority. 👉 Here’s where it gets interesting: Even though your timer meets 100ms, the callback cannot run immediately. The Event Loop will only pick tasks from the Callback Queue when two conditions are satisfied, ** One is the Call Stack is empty ** Second one is Microtask Queue is empty Which mean our code still has functions running in the Call stack or multiple pending Promises in the Microtask Queue, your setTimeout callback must wait, even if the timer already expired. 💥 This is the limitation of single-threaded JavaScript. Even though the timer is ready, JavaScript cannot interrupt other running code or microtasks. So our console log that was supposed to run after 100ms might execute after 200ms, 300ms, or even later, depending on how busy the thread is. 👉 Key takeaway: ** setTimeout guarantees a minimum delay, not an exact execution time. ** The Event Loop gives priority to the Microtask Queue first, then the Callback Queue. ** This is not a bug. it’s just how the JavaScript run time behaves. #JavaScript #WebDevelopment #Frontend #EventLoop #AsyncJS #ProgrammingInsights #SingleThreaded #CodingTips #JavaScriptRuntime

⚡️ Async JavaScript: The most misunderstood genius in tech Everyone says, “JavaScript is async, so it’s parallel.” That’s like saying you’re multitasking because you listen to music while doing nothing productive. 🎧😅 Here’s the truth: JavaScript runs on one thread — one call stack. When it hits a long task, it hands it off to Web APIs — like saying, “You do the heavy lifting, I’ll keep things moving.” Once that’s done, the result moves into a queue: Microtask Queue (Promises, async/await) Callback Queue (timeouts, DOM events, etc.) The Event Loop keeps checking — “Is the call stack empty?” If yes, it first pulls from the microtask queue, then the callback queue. That’s why some async tasks feel “faster” — they just cut in line. 😏 Async JavaScript isn’t parallel. It’s just smart enough to never wait and never waste. 💬 What’s one JavaScript concept that finally “clicked” for you after hours of confusion? #JavaScript #Async #EventLoop #WebDevelopment #CodingHumor #Frontend #Programming #Developers #LearningEveryday