React Rendering Model Simplified: setState and Virtual DOM

I've been a frontend engineer for 4+ years and I've never really posted on LinkedIn. That changes today. 👋 I've spent most of my career building React interfaces: reusable component systems, data-heavy dashboards, complex multi-step workflows, and component libraries that multiple teams share without stepping on each other. It's not glamorous work. It's thinking through prop APIs, managing state without things falling apart, making sure large UIs stay fast, and ensuring five different teams can use the same component without breaking each other. That's the kind of frontend I know well. What I'm learning right now: React performance and re-renders. I understand the theory. I want to understand it deeply enough to use it confidently in production. I'm going to share that journey here: things I build, things that confuse me, and things I finally get after staring at them long enough. If that sounds useful, follow along. 🙂 #Frontend #React #FrontendDevelopment #WebDevelopment #JavaScript #SoftwareEngineering #ReactJS

Over the past year working as a frontend developer, I’ve realized something important: Building real products teaches you far more than tutorials. While working with React and Next.js, I’ve spent time building dashboards, handling complex UI state, integrating APIs, and focusing on how users actually interact with a product. A few things I’ve learned along the way: • Clean component structure makes large applications easier to maintain • Performance and usability go hand-in-hand • Good state management becomes critical as applications grow • Real projects force you to think beyond just “making it work” Recently I’ve been focusing on improving my frontend engineering skills and building more polished projects for my portfolio. Excited to keep learning and building. If you're working on interesting frontend problems or building product-focused teams, I'd love to connect. #frontend #reactjs #nextjs #webdevelopment #softwareengineering

🚨 Why useEffect Runs Twice in React 18? Many developers panic when they see their useEffect running twice in development. But this is not a bug. It’s intentional. Reason: React 18 introduced Strict Mode double invocation in development to help detect side-effects and unsafe code. React does this internally: 1. Mount component 2. Run useEffect 3. Immediately cleanup 4. Mount again 5. Run useEffect again Purpose: -- Detect unexpected side effects -- Ensure cleanup functions work correctly -- Prepare apps for future concurrent features Important: This happens only in development In production, useEffect runs once as expected Best Practice: Always write useEffect assuming it might run multiple times and ensure proper cleanup. useEffect(() => { const id = setInterval(() => { console.log("Running..."); }, 1000); return () => clearInterval(id); // cleanup }, []);  If your effect works correctly with double execution, your code is side-effect safe. 👉 Follow Sharad Kumar for daily doses of tech wisdom, corporate realities, and relatable IT life. 🚀 #ReactJS #Node #Frontend #InterviewPreparation #JavaScript #FullStack #WebDevelopment #SoftwareEngineer #Learning #Hiring #Jobs #FresherJobs #TechTalks #Software #MERN

⚡ Frontend is more than just UI One thing I’ve been learning lately: Good frontend developers don’t just write code — they solve user problems. While working with React & Next.js, I’ve started focusing more on: • Reducing unnecessary re-renders • Applying performance optimization techniques for faster UI • Keeping components simple and predictable • Writing code that is easy for others to understand • Thinking from the user’s perspective, not just the developer’s Clean UI is important. But performance and clean logic behind the UI are what truly make a difference. Still learning. Still improving. 🚀 #Frontend #ReactJS #NextJS #PerformanceOptimization #CleanCode #WebDevelopment

🚀 Frontend Development Roadmap (Part 2) Ready to level up your frontend skills? Let’s go 👇 ⚛️ React.js • Build reusable components • Understand Props & State • Master Hooks (useState, useEffect) • Work with APIs • Fetch data (Fetch / Axios) • Handle JSON & REST APIs 🛠️ Git & GitHub • Learn Git fundamentals • Push & Pull code • Work with branches like a pro 🎨 Tools & Styling • Tailwind CSS • Bootstrap / Sass • Responsive Design (mobile-first mindset) ⚡ Performance & Best Practices • Optimize for speed • Write clean, maintainable code • Build reusable components 💡 Pro Tip: Consistency + Building Projects = Real Growth 🔥 • Don’t just learn — build! • Add routing to create real-world apps 🔥 Coming next: Part 3 (Backend & Full Stack) If you're serious about becoming a frontend developer, this is your next step. Let’s grow together 💻✨ #Frontend #ReactJS #WebDevelopment #JavaScript #GitHub #APIs #Coding #Developers #LearnToCode 🚀

Most React developers think adding more components always increases clarity. The real reason scalable React apps thrive is how they tame complexity within components themselves. I used to split everything into tiny components, hoping it would make code cleaner. Instead, I ended up with deeply nested props and scattered logic that made debugging a nightmare. The game changer? Embracing focused, self-contained components that manage their own state and logic where it makes sense. Using hooks like useReducer or custom hooks to encapsulate complex logic keeps components readable. Also, don't hesitate to lift state up only when necessary. Over-lifting can cause unnecessary re-renders and harder-to-follow data flow. In a recent project, refactoring a sprawling form into a few well-defined components with clear responsibilities cut down bugs and sped up onboarding for new devs. How do you manage complexity in your React components without over-engineering? Curious to hear your experience! 🔥 #React #WebDev #JavaScript #Frontend #CodingTips #DeveloperExperience #ReactHooks #ScalableCode #Tech #SoftwareDevelopment #Programming #ReactJS #ReactHooks #FrontendDevelopment #WebDevelopment #Solopreneur #DigitalFounder #ContentCreator #Intuz

Ever wondered what it takes to become a Frontend Developer in 2026? 🚀 I found this amazing roadmap that breaks it down into 4 simple parts: 1️⃣ The Core: HTML for structure, CSS for styling, and JavaScript for the logic. This is your foundation! 2️⃣ Frameworks & Libs: Once you know the basics, pick one like React, Vue, or Angular to build faster. 3️⃣ Tools: Learn Git for version control and NPM/Yarn to manage your packages. These are a lifesaver! 4️⃣ Key Concepts: Focus on Responsive Design (mobile-friendly), Web Performance, and how to connect with APIs. Whether you are a beginner or just brushing up your skills, this map is all you need to stay on track. #FrontendDevelopment #WebDev #CodingLife #Programming #TechTips #CareerGrowth #fullstackdeveloper

As a Frontend Engineer, one thing I’ve learned is that building great products is not just about writing code — it’s about engineering experiences. A clean UI means nothing if the performance is poor. A beautiful design means little if the codebase isn’t scalable. Over the years, working with technologies like React, TypeScript, and Tailwind CSS, I’ve realized that good engineering comes down to a few principles: • Write maintainable and scalable code • Focus on performance and accessibility • Build reusable component systems • Collaborate closely with designers and backend engineers The goal is simple: create products that are fast, intuitive, and reliable for users. Still learning. Still building. Still improving every day. #FrontendEngineering #ReactJS #SoftwareEngineering #WebDevelopment #Tech

I’ve been working as a frontend developer for around 2 years now. And honestly — I’ve made a lot of mistakes while learning React. Here are 5 mistakes I made (so you don’t have to): 1️⃣ Overcomplicating components I used to put too much logic in a single component. Now I focus on breaking things into smaller, reusable pieces. 2️⃣ Not managing state properly At the beginning, I didn’t think much about state structure. But poor state management quickly leads to messy code. 3️⃣ Ignoring performance I wasn’t thinking about re-renders at all. Now I use techniques like memoization and better state handling. 4️⃣ Writing unclean code It worked… but it wasn’t readable. Now I focus more on clean structure and naming. 5️⃣ Not understanding fundamentals deeply I jumped too quickly into advanced topics. But strong basics (JS + React core) make everything easier. The biggest lesson? 👉 Writing code that works is easy. 👉 Writing clean, scalable code takes time. Still learning, still improving. What’s one mistake you made while learning React? #reactjs #frontenddeveloper #webdevelopment #javascript #learninginpublic

🚀 Front-End Development with React: More Than Just Code Over the past period, I’ve been diving deeper into React and modern front-end development — and I’ve come to realize that building user interfaces is not just about making things look good. It’s about: ✨ Creating smooth user experiences ⚡ Writing clean, maintainable code 🧠 Thinking in components and reusability 📈 Continuously improving performance React has completely changed the way I approach building applications — from managing state efficiently to structuring scalable projects. One thing I’ve learned: 👉 Great front-end developers don’t just build interfaces… they solve user problems. Currently, I’m focusing on improving my skills in: Component architecture State management Performance optimization I’m always open to learning, feedback, and connecting with other developers in this field 🤝 💬 What’s one thing React changed in your development journey? #Frontend #ReactJS #WebDevelopment #JavaScript #Coding #SoftwareEngineering