React Virtual DOM Simplified: Why It's Faster Than jQuery

𝐈 𝐀𝐬𝐤𝐞𝐝 𝐓𝐡𝐢𝐬 𝐐𝐮𝐞𝐬𝐭𝐢𝐨𝐧 𝐢𝐧 𝐚 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 𝐈𝐧𝐭𝐞𝐫𝐯𝐢𝐞𝐰… 𝐚𝐧𝐝 𝐦𝐨𝐬𝐭 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫𝐬 𝐟𝐚𝐢𝐥𝐞𝐝 ❌ Question: When does a React component re-render? Example: function Counter() { const [count, setCount] = useState(0); console.log("Render"); return ( <button onClick={() => setCount(count + 1)}> {count} ); } What will happen when button is clicked? Answer 👇 Component will re-render every time state changes. In React, re-render happens when: ✔ State changes ✔ Props change ✔ Parent component re-renders Many developers think only state change causes re-render but parent re-render also triggers child render. Important Tip for Interview ⚠️ React re-render does NOT always mean DOM update. React compares Virtual DOM first, then updates UI. Good React developers know syntax. Great React developers know re-render logic. #ReactJS #FrontendDeveloper #JavaScript #WebDevelopment #ReactInterview #CodingInterview #NextJS #SoftwareDeveloper #UIDeveloper

🚀 Built a Job Listing UI using React.js I recently developed a dynamic Job Listing interface using React, focusing on clean UI and reusable components. 💡 What this project includes: ✔️ Created a reusable Card component ✔️ Passed job data using Props ✔️ Rendered multiple job listings using map() ✔️ Structured real-world job data (company, role, salary, location, etc.) ✔️ Clean UI with separate sections (Top / Center / Bottom) ✔️ Integrated icons using lucide-react 🧠 Key Learnings: Understanding props and component reusability helped me see how scalable applications are built in React. Instead of repeating code, I can now design modular components that handle dynamic data efficiently. 📊 Tech Stack: React.js | JavaScript | CSS Sheryians Coding School Harsh Vandana Sharma #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment #Projects #CodingJourney #UIUX #LearningByDoing

💧 What is Hydration in Web Development? In modern frontend frameworks like React, Next.js, and Vue, you may have heard the term Hydration. But what does it actually mean? Hydration is the process where JavaScript takes over the HTML that was already rendered on the server and makes it interactive in the browser. ✅ Step-by-step flow: 1. Server renders HTML (SSR / SSG) 2. Browser receives static HTML 3. JavaScript loads in the browser 4. Framework attaches event listeners to existing HTML 5. Page becomes fully interactive This process is called Hydration. Why Hydration is important? ✔ Faster first load (HTML comes from server) ✔ Better SEO ✔ Better performance ✔ Smooth user experience Example: Without hydration → Button looks visible but doesn't work With hydration → Button works after JS attaches events Hydration is one of the key concepts behind modern frameworks like Next.js, Remix, and Nuxt. If you understand Hydration, you understand how modern SSR apps really work. #javascript #reactjs #nextjs #webdevelopment #frontend #ssr #hydration #performance

🚀 Project Update: React Card UI A simple card project built using React.js to show user details in a clean way. 🔗 GitHub Link: https://lnkd.in/gi56aNdJ ✨ Features: ✔ Show data using map() ✔ Clean and simple design ✔ Light and dark theme ⚙ Tech Stack: React.js | JavaScript | HTML | CSS This project helped improve basic React skills and understanding of UI. More projects coming soon. #ReactJS #FrontendDeveloper #WebDevelopment #JavaScript #Projects

JavaScript: One Language, Endless Possibilities What started as a simple scripting language has evolved into a complete ecosystem powering nearly every area of development. Whether you're building websites, servers, mobile apps, or even games — JavaScript has a tool for everything. Here's how JavaScript dominates the tech world: 🔹 JavaScript + React → Frontend development 🔹 JavaScript + Node.js → Backend development 🔹 JavaScript + TypeScript → Scalable & type-safe coding 🔹 JavaScript + D3.js → Data visualization 🔹 JavaScript + Three.js → 3D graphics & animations 🔹 JavaScript + Jest → Testing made simple 🔹 JavaScript + jQuery → Easy DOM manipulation 🔹 JavaScript + Next.js → Production-ready web apps 🔹 JavaScript + Express → Fast & flexible APIs 🔹 JavaScript + Electron → Cross-platform desktop apps 🔹 JavaScript + Phaser → Game development 🎮 One language. Infinite opportunities. If you know JavaScript, you can build almost anything. I've also put together an Interview Preparation Guide for Frontend Engineers covering JavaScript, React, Next.js, System Design, and more. If you found this helpful, don't forget to like and reshare 😊 #JavaScript #WebDevelopment #Frontend #React #NodeJS #TypeScript #NextJS #Coding #TechEcosystem #SoftwareEngineering #InterviewPreparation #LearnToCode

JavaScript: One Language, Endless Possibilities What started as a simple scripting language has evolved into a complete ecosystem powering nearly every area of development. Whether you're building websites, servers, mobile apps, or even games — JavaScript has a tool for everything. Here's how JavaScript dominates the tech world: 🔹 JavaScript + React → Frontend development 🔹 JavaScript + Node.js → Backend development 🔹 JavaScript + TypeScript → Scalable & type-safe coding 🔹 JavaScript + D3.js → Data visualization 🔹 JavaScript + Three.js → 3D graphics & animations 🔹 JavaScript + Jest → Testing made simple 🔹 JavaScript + jQuery → Easy DOM manipulation 🔹 JavaScript + Next.js → Production-ready web apps 🔹 JavaScript + Express → Fast & flexible APIs 🔹 JavaScript + Electron → Cross-platform desktop apps 🔹 JavaScript + Phaser → Game development 🎮 One language. Infinite opportunities. If you know JavaScript, you can build almost anything. I've also put together an Interview Preparation Guide for Frontend Engineers covering JavaScript, React, Next.js, System Design, and more. If you found this helpful, don't forget to like and reshare 😊 #JavaScript #WebDevelopment #Frontend #React #NodeJS #TypeScript #NextJS #Coding #TechEcosystem #SoftwareEngineering #InterviewPreparation #LearnToCode

🚀 Day 27 — React Conditional Rendering using if-else Today I learned how Conditional Rendering works in React using the if-else approach 👇 In React, conditional rendering works just like JavaScript conditions. We can use: 🔹 if-else 🔹 switch-case 🔹 ternary operator 🔹 logical operators (&&) to display UI based on specific conditions. 🧩 Example: Using if-else const Conditional1 = () => { const [displayText, setDisplayText] = useState(true); if (displayText) { return ( <> <h1>Welcome to Testyantra Software Solutions</h1> <p>Lorem ipsum dolor sit amet...</p> </> ); } else { return <h1>No data found</h1>; } }; ✅ Key Learnings 🔹 UI changes dynamically based on state 🔹 if-else is best for clear multi-line JSX conditions 🔹 Makes components flexible and interactive 💡 Conditional rendering is one of the core concepts for building real-world React applications. 🔥 Every small concept is helping me become stronger in frontend development. #React #ConditionalRendering #FrontendDevelopment #JavaScript #WebDevelopment #10000 Coders

Over the past few months, I have been consistently working on building a strong foundation in frontend development. I began with #HTML & #CSS, focusing on structure, layout, and responsive design principles. I then moved to #JavaScript, where I concentrated on understanding core concepts and improving problem-solving through regular practice. 💡 To strengthen my fundamentals, I focused on building small, logic-driven implementations that helped me apply core JavaScript concepts in practical scenarios. After establishing a solid base, I transitioned to #React.js, gaining experience in component-based architecture and reusable UI design. Currently, I am working with #Next.js, exploring modern frontend capabilities such as: • File-based routing • Server-side rendering (SSR) • Performance optimization 📌 Key Approach • Strong emphasis on fundamentals • Learning through practical implementation • Consistency in daily progress 💬 Discussion What challenges did you face when transitioning from React to Next.js? #NextJS #ReactJS #JavaScript #FrontendDevelopment #WebDevelopment #SoftwareEngineering #WebDevJourney #TechGrowth #DeveloperLife

⏯️ Built Play/Pause button in Reactjs, Nextjs, HTML & CSS. Perfect for media heavy products. 💻 Code: https://lnkd.in/e_spHeJH Follow me on LinkedIn, Like 👍🏻, Comment 💬 & Repost ♻️. 🔍 Need a Frontend Developer partner? 👉🏻 Link in the comments. #buildinpublic #websites #reactjs #landingpages #landingpage #website #webapps #nextjs #html #css #typescript #javascript #producthunt #dashboards #projects

🚀 Front-End Development: Powering Modern Web Experiences The front-end ecosystem continues to evolve rapidly, giving developers powerful tools to build faster, smarter, and more interactive applications. From component-based architectures to highly optimized rendering, modern frameworks are transforming how we create user experiences. 💻 Popular Front-End Technologies Shaping the Web: 🔹 React – Widely used for building dynamic and scalable user interfaces with reusable components. 🔹 Angular – A robust framework ideal for large-scale enterprise applications. 🔹 Vue.js – Known for its simplicity and flexibility in building progressive web apps. 🔹 Next.js – Bringing server-side rendering and performance optimization to React applications. 🔹 Svelte – A modern approach that compiles code into efficient vanilla JavaScript. 🔹 jQuery – A classic library that simplified JavaScript development and DOM manipulation. 🔹 Backbone.js – One of the early frameworks that introduced structure to JavaScript applications. ✨ These technologies empower developers to deliver fast, scalable, and engaging digital experiences across devices. 🌍 As the web continues to grow, choosing the right framework can significantly impact performance, maintainability, and user satisfaction. 💬 Which front-end framework do you enjoy working with the most? Let’s discuss! #FrontendDevelopment #WebDevelopment #JavaScript #ReactJS #Angular #VueJS #NextJS #Svelte #WebDesign #SoftwareDevelopment #Coding #Developers #TechCommunity #Programming #FullStackDevelopment