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Showing posts with the label Programming Tutorials

🎯 What is the Event Loop in JavaScript? A Complete Guide with Diagrams

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🔁 What is the Event Loop in JavaScript? A Complete Guide with Diagrams Have you ever wondered how JavaScript handles asynchronous operations like setTimeout , Promises, or fetch() ? The secret lies in something called the Event Loop . In this blog post, we’ll break down: ✅ What the JavaScript Event Loop is ✅ How the Call Stack, Web APIs, and Queues work together ✅ A visual diagram to understand the flow ✅ A practical code example to clear your doubts 🔄 What is the Event Loop? JavaScript is a single-threaded language , meaning it can only do one thing at a time. But it still handles asynchronous tasks efficiently thanks to the Event Loop . Let’s understand how it works through its key components. 📊 Components of the Event Loop Call Stack: Where JavaScript tracks which function is currently running. Web APIs: Browser-provided functionalities like setTimeout , DOM Events , etc. Callback Queue: Holds callbacks from Web APIs waiting to be execut...
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🚀 Unlock the Power of React JS: Build a Functional Component in Minutes!

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React JS has revolutionized the way we build modern web applications. If you’re new to React or want a refresher on creating functional components , this post will guide you through it step by step—with a live example included! 🎯 Why React JS? 🧠 Component-based architecture ⚡ Fast performance with Virtual DOM 🔁 Reusable code 🎨 Rich ecosystem for UI/UX 📦 What is a Functional Component? A functional component is a JavaScript function that returns a React element (JSX). It’s the simplest way to create components in React. 💻 Example: Creating a Simple Functional Component import React from 'react'; function Greeting(props) { return <h1>Hello, {props.name}!</h1>; } export default Greeting; Now, use this component in your main app file: import React from 'react'; import ReactDOM from 'react-dom'; import Greeting from './Greeting'; ReactDOM.render( <Greeting name="Ankur...
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