React Component Import and Export Basics

DAY 22 OF POSTING REACT CONTENT ⚛️ WHAT ARE ES MODULES? 🤔 Modern JavaScript uses ES Modules to split code into separate files. Instead of writing everything in one file, we can: 👉 export something from one file 👉 import it into another file React heavily depends on ES Modules. Every component you create is usually exported and imported somewhere else. #ReactJS #JavaScript #ESModules #FrontendDevelopment #LearnInPublic #WebDevelopment #CodingJourney

Many beginners think querySelector() in JavaScript and useRef() in React do the same thing. But React uses a Virtual DOM, so direct DOM manipulation can break React’s flow. That’s why useRef() gives controlled access to the DOM while keeping React’s architecture intact. Learning something new every day in my React journey. 🚀 #ReactJS #JavaScript #WebDevelopment #FullStackDevelopment

If anyone is interested in developing their skills in React.js, a quick thought based on my experience that might be helpful. 💬 Here are some tips for developing this skill: 1) Start with learning and practicing JSX , Components and props. 2) Go for hooks and state management then. React is different from Javascript, since it uses virtual dom. #javascript #react #webdevelopment

Still writing only JavaScript and wondering where to begin with React? You're not behind. You just need the right starting point. 🎯 We're hosting a FREE Webinar this 5th February at 11 AM, designed specifically for JavaScript developers taking their very first step into React. What we'll cover: ▸ What React is & why every developer needs it ▸ Core React basics, explained simply & clearly ▸ Writing your first real React code ▸ The clear path forward after the basics Just bring your JavaScript basics and the willingness to learn 🙌 🔗 Register FREE → https://lnkd.in/dB-7pBqk #React #ReactBasics #JavaScript #FrontendDevelopment #LearnReact #WebDevelopment #BeginnerDeveloper #FreeWebinar #DeveloperRoadmap #TechWebinar

React doesn't update the entire page. It's way smarter than that. Here's what actually happens behind the scenes in 6 simple steps: 📋 Virtual DOM — a lightweight JS copy of the real DOM 🔍 Diffing — comparing old vs new to spot changes 🔄 Reconciliation — the full compare-and-update cycle ✏️ JSX — looks like HTML, but it's JavaScript 🔧 Babel — translates JSX into plain JS before the browser sees it 🚀 The Flow — JSX → Babel → Virtual DOM → Diff → Real DOM Save this. The next part covers Components, Props & State. ♻️ Repost to help someone learning React. #React #VirtualDOM #JavaScript #WebDevelopment #Frontend #LearnToCode

Understanding React Components React applications are built using components, which are reusable and independent pieces of UI. Instead of writing one large file, we break the UI into smaller parts Types of Components  1)Functional Components 2)Class Components In modern React, we mainly use functional components, which are simple JavaScript functions that return JSX. Core Rules of React Components Component Name Must Start with Uppercase Must Return a Single Parent Element Do Not Modify Props Understanding components made React feel more structured and practical. Building step by step and strengthening fundamentals 🚀 #ReactJS #FrontendDevelopment #WebDevelopment #LearningJourney #JavaScript

🚫 Do Not Overuse <div> in React When working with HTML, we often use <div> to wrap multiple elements. But in React, unnecessary <div> elements can create extra nodes in the DOM. 💡 React introduced Fragments (React 16.2) to solve this problem. Why use React Fragments? • No extra DOM nodes • Cleaner and less cluttered DOM • Slightly better performance • Easy way to group multiple elements React also provides a Fragment shorthand (<> </>) which makes code cleaner and easier to write. 📌 I’ve explained this concept in a simple swipe PDF for beginners. #React #ReactJS #JavaScript #FrontendDevelopment #WebDevelopment #MohitDecodes

DAY 19 OF POSTING REACT CONTENT ⚛️ WHAT DOES async REALLY DO? 🤔 When we add async before a function, we are telling JavaScript: 👉 “This function will return a Promise.” Even if we return a normal value, JavaScript automatically wraps it inside a Promise. So: async does not pause anything. It just prepares the function to work with asynchronous tasks. #ReactJS #JavaScript #AsyncJavaScript #Promises #FrontendDevelopment #LearnInPublic #WebDevelopment #CodingJourney

🌐 Understanding JSX in React Today I learned how JSX allows us to write HTML inside JavaScript. 1)Embedding JavaScript inside {} 2)Single root element rule 3)How React converts JSX into JavaScript ✔ JSX = Syntactic sugar ✔ It gets compiled by Babel ✔ It becomes React.createElement() ✔ React then creates Virtual DOM objects Now React UI development feels more practical and clear. #ReactJS #JSX #FrontendDevelopment #LearningJourney

DAY 20 OF POSTING REACT CONTENT ⚛️ WHAT DOES await REALLY DO? 🤔 await tells JavaScript: 👉 “Wait here until the Promise finishes.” It pauses the function until the result is ready. Example: async function getData() { const data = await fetchData(); console.log(data); } The code waits for fetchData() before moving to the next line. Cleaner than .then() Easier to read Same result #ReactJS #JavaScript #AsyncAwait #Promises #FrontendDevelopment #LearnInPublic #WebDevelopment #CodingJourney