How I Reduced Unnecessary React Re-renders by ~30% in an Enterprise Application Recently, while working on a large-scale React application, we noticed certain UI modules were re-rendering more often than required — impacting responsiveness. After analyzing the component tree and state flow, I made a few targeted improvements: • Used React.memo for stable presentational components • Optimized useEffect dependency arrays • Avoided recreating functions inside renders • Applied useMemo and useCallback where it actually mattered • Restructured state to reduce prop drilling The result: Improved UI responsiveness and significantly reduced unnecessary re-renders across modules. Big reminder: Performance optimization in React is often less about adding tools and more about understanding how rendering actually works. Still learning something new about React every day. #reactjs #frontenddevelopment #javascript #webperformance #webdevelopment

🚀 New Project Update: Quiz Web Application I recently built a Quiz Web Application using React.js and TypeScript, and it was a great learning experience while strengthening my frontend development skills. 🔧 Tech Stack & Concepts Used: • React.js with TypeScript • Trivia API for dynamically generated quiz questions • Styled Components for component-based styling • TypeScript concepts like Enums, Types, and Interfaces • React.FC patterns • Rendering HTML content safely using dangerouslySetInnerHTML (__html) Through this project, I gained deeper hands-on experience with type safety in TypeScript, component structuring, API integration, and modern styling approaches in React. 🎥 I’ve also recorded a demo video showing how the application works. 💻 The source code is available on my GitHub, and I’ll be sharing the repository link https://lnkd.in/gjYYnnnR. 🌐 Next step: Deploying the application on Netlify so everyone can try it online. I’d love your feedback and suggestions! 🙌 #ReactJS #TypeScript #WebDevelopment #FrontendDevelopment #JavaScript #Coding #DeveloperJourney

Today I revisited an important concept in React.js — the Component Lifecycle. Understanding the lifecycle of a component is essential for writing efficient and maintainable React applications. Every React component goes through a series of phases during its lifetime. Key Lifecycle Phases: • Mounting – When the component is created and inserted into the DOM. • Updating – When the component re-renders due to changes in state or props. • Unmounting – When the component is removed from the DOM. In traditional Class Components, lifecycle methods such as componentDidMount, componentDidUpdate, and componentWillUnmount were used to manage these phases. With Functional Components and React Hooks, particularly useEffect(), managing lifecycle-related logic has become simpler and more readable. Mastering the React lifecycle helps developers: ✔ Handle side effects like API calls ✔ Optimize component performance ✔ Write cleaner and more predictable code Learning React is not only about building components, but also about understanding how they behave throughout their lifecycle. #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment #ReactLifecycle #ReactHooks #SoftwareEngineering #LearningInPublic

In this project/demo, I explored the powerful useEffect Hook in React and how it helps manage side effects in functional components. 🔹 Learned how to handle component lifecycle events This hands-on practice helped me understand how React handles rendering and side effects behind the scenes. Mastering hooks like useEffect is essential for building dynamic and efficient React applications. Excited to keep learning and building more with React! 💻✨ #ReactJS #FrontendDevelopment #WebDevelopment #JavaScript #useEffect #ReactHooks #CodingJourney #LearningByDoing #FullStackDeveloper #TechSkills

🚀 React Hooks Small Projects I recently worked on a few small projects to better understand some important React Hooks. In this video, I demonstrated how these hooks work with simple examples so that beginners can easily understand their usage. 🔹 useState – Used to manage state inside a functional component. It helps update and display dynamic data in the UI. 🔹 useEffect – Used to handle side effects in React applications such as API calls, timers, and updating the DOM when state changes. 🔹 useContext – Helps share data globally across components without passing props manually through every level. 🔹 useReducer – A powerful hook for managing complex state logic, especially when multiple state updates depend on different actions. 🔹 useMemo – Optimizes performance by memoizing expensive calculations so they only run when dependencies change. 🔹 useCallback – Returns a memoized function to prevent unnecessary re-renders when passing functions to child components. These mini projects helped me strengthen my understanding of React Hooks and component optimization techniques. 📌 If you watch the video, you can easily understand how each hook works in a practical way. #ReactJS #ReactHooks #WebDevelopment #MERNStack #JavaScript #FrontendDevelopment #CodingPractice

💻 Revisiting React Fundamentals – Understanding State Today I revisited one of the core concepts of React: State management using the useState hook. To reinforce the concept, I built a small Counter component that performs different operations such as: ✔️ Increment ✔️ Decrement ✔️ Reset ✔️ Multiply by 2 ✔️ Square of a number This simple exercise helped me understand how state changes trigger UI updates in React and how event handlers like onClick interact with state. Sometimes revisiting basic concepts helps strengthen the foundation before building more complex applications. I’ve attached a short screen recording and code snippets showing how the counter works. Always learning, always improving. 🚀 #ReactJS #FrontendDevelopment #WebDevelopment #JavaScript #LearningInPublic #ReactDeveloper

💡 React Tip: Many developers misuse useMemo Today I was reviewing some React code and noticed something interesting — a lot of developers use useMemo in places where it's actually not needed. useMemo is useful when you have an expensive calculation that shouldn't run on every render. It memoizes the result and only recalculates when the dependencies change. But a common mistake is using useMemo for simple values or lightweight operations. Example of unnecessary use: const doubled = useMemo(() => count * 2, [count]); In this case, React can calculate count * 2 instantly, so useMemo adds extra complexity without real benefit. A better use case would be something like filtering a large list: const filteredUsers = useMemo(() => { return users.filter(user => user.isActive); }, [users]); Here, useMemo helps avoid recalculating the filtered list on every render. 👉 Lesson: useMemo is a performance optimization tool, not something to use everywhere. Curious to know — how often do you use useMemo in your projects? #reactjs #javascript #frontenddeveloper #webdevelopment

𝗥𝗲𝗮𝗰𝘁 𝗝𝗦 𝗛𝗼𝗼𝗸𝘀 𝗡𝗼𝘁𝗲𝘀 — 𝗖𝗼𝗺𝗽𝗹𝗲𝘁𝗲 𝗚𝘂𝗶𝗱𝗲 𝘁𝗼 𝗔𝗹𝗹 𝗘𝘀𝘀𝗲𝗻𝘁𝗶𝗮𝗹 𝗛𝗼𝗼𝗸𝘀 Master React Hooks with these clear and structured notes designed for beginners and experienced developers. This guide explains the most important React Hooks used in real-world applications, including: ✔ Introduction to React Hooks ✔ useState for state management ✔ useEffect for side effects & lifecycle handling ✔ useContext for global state sharing ✔ useRef for DOM access & persistent values ✔ useMemo for performance optimization ✔ useCallback for function memoization ✔ Custom Hooks creation ✔ Rules of Hooks ✔ Best practices & common mistakes Whether you're preparing for interviews or building scalable React applications, these notes will help you understand hooks clearly and practically. #ReactJS #ReactHooks #FrontendDevelopment #JavaScript #WebDevelopment #ReactDeveloper #LearnReact #CodingNotes

⚛️ **Getting Started with React.js** Before learning advanced concepts like routing, I started my journey with **React.js**, a powerful JavaScript library used for building modern and interactive user interfaces. React uses a **component-based architecture**, which allows developers to divide the UI into small, reusable components. This makes applications easier to develop, manage, and scale. During my learning, I explored: • Creating and organizing React components • Understanding **JSX** for writing HTML inside JavaScript • Using **useState** for managing component state • Using **useEffect** for handling side effects like API calls • Building simple and dynamic user interfaces Learning these fundamental concepts helped me understand how React applications work and prepared me to move forward to topics like **React Router and API integration**. #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment #LearningJourney

Most developers meet React’s useEffect() and immediately think: "Why is this behaving so weird?" 😵💫 But the moment you understand the dependency array, everything suddenly clicks. 💡 Here’s the simple mental model that makes useEffect easy: 🔹 No dependency array useEffect(() => {}) Runs after every render. 🔹 Empty dependency array useEffect(() => {}, []) Runs only once when the component mounts. 🔹 With dependencies useEffect(() => {}, [count]) Runs every time count changes. 🔹 Cleanup function Perfect for things like timers, subscriptions, or event listeners. Example: Start a timer ⏱️ → Do something → Clean it up when the component unmounts. That small dependency array controls everything. Once you understand this concept, useEffect stops feeling confusing and starts feeling powerful. Sometimes the most confusing parts of coding are just one small concept away from clarity. 💡 Yogita Gyanani Piyush Vaswani #React #WebDevelopment #FrontendDevelopment #JavaScript #CodingTips #ReactJS