React Error Boundaries: A Must-Know Feature for Developers

⚡ A small performance trick that improved my React application While working on a React project recently, I noticed the UI was re-rendering more times than expected, which slowed down the application. After checking the component logic, I realized the issue was caused by unnecessary re-renders when props or functions were recreated on every render.The solution was simple: using useMemo and useCallback to prevent unnecessary recalculations and function recreations. Example: const memoizedValue = useMemo(() => computeValue(data), [data]); const memoizedFunction = useCallback(() => { doSomething(); }, []); This small optimization significantly improved performance and made the application much smoother.Sometimes small optimizations make the biggest difference in real-world applications. #ReactJS #JavaScript #FullStackDeveloper #WebDevelopment #FrontendDevelopment #Programming #CodingTips

🚀Day 97 of Cohort2.0 Today's class was about More on Instagram clone project with Ankur Prajapati at Sheryians Coding School In This session, i implemented some more API's that will further be used while interacting frontend. i learned some crucial security related and error Handling related concepts that helps in better user experience and make the app more manageable. #responsiveness #responsivedesig #css #scss #html #Cohort2 #webdevelopment #Javascript #react #DOM #frontend

🚀 Struggling with JavaScript variables? This simple infographic breaks down var, let, and const like a pro! 📊✨ Check out the key differences: • var: Old-school, function-scoped, hoisted (but undefined chaos 😅), redeclarable & reassignable. • let: Modern block-scoped hero 🛡️, no redeclaration in same block, reassignable, temporal dead zone. • const: King of constants 👑, block-scoped, immutable binding (can't reassign), not redeclarable. Pro tip: Ditch var forever—stick to let for changes, const for stability! Saves bugs in React apps. 💻What's your go-to: let or const? Drop a comment! 👇🔥 #JavaScript #VarLetConst #WebDevelopment #FrontendDev #CodingTips #ReactJS #LearnJS #DeveloperLife #Programming #TechTips

How JavaScript’s Single Thread Keeps React Responsive : In a single-thread system, all tasks are processed one at a time—similar to a single person completing tasks in sequence rather than multiple people working simultaneously. JavaScript and React follow this model, meaning only one operation executes at any given moment. To prevent the application from freezing, JavaScript uses the event loop and asynchronous features to shift slower or waiting tasks away from the main thread. React enhances this with Fiber, which breaks large rendering tasks into smaller, manageable pieces, allowing the browser to respond quickly to user interactions. React also updates only the necessary parts of the UI. Despite using a single thread, this intelligent workflow keeps applications fast, responsive, and user-friendly. #ReactJS #JavaScript #WebDevelopment #Frontend #SingleThread #ReactFiber #SPA #Programming #TechExplained #WebApps #UIDevelopment #AsyncJS #EventLoop #CodeTips #LearnReact #DeveloperCommunity

⚛️ One thing that improved my React code significantly: Understanding when and why components re-render. In React, a component re-renders when: • Its state changes • Its props change • Its parent component re-renders Early in my projects, I didn’t think much about this. But as applications grow, unnecessary re-renders can affect performance. Some things that helped me manage this better: 🔹 Using React.memo for pure components 🔹 Memoizing functions with useCallback 🔹 Memoizing expensive calculations with useMemo But an important lesson: Premature optimization can make code harder to maintain. First build clean components. Optimize only where performance actually matters. React performance is less about tricks and more about understanding how rendering works. #ReactJS #FrontendDevelopment #ReactPerformance #JavaScript #SoftwareEngineering Ankur Prajapati MOHD ALI ANSARI Sheryians Coding School

Introducing bxp-code v1.0.0 — drop-in React code blocks for developers I built a VS Code theme extension (BedarX Pro) and wanted the same syntax colors on the web. Every React highlighting library I tried looked nothing like my editor, needed too much config, or produced flat output. So I built bxp-code. Drop-in React components with VS Code-accurate syntax highlighting via Shiki (same TextMate grammars VS Code uses) and automatic Prettier formatting. No setup needed. Two components: 1. BxpCode — code block with header, copy button, line numbers, sticky headers 2. BxpCodeTabs — tabbed interface for multi-language snippets Why use it: Building docs, portfolios, blogs, tutorials, or any React app showing code? This replaces wiring up a highlighter, formatter, copy button, and theme system separately. One import, one component. Dark/light themes included, every color customizable via props. Accepts code as string, File, or URL with auto language detection. What's next: Vue and Svelte adapters, React Native support, diff highlighting, and more built-in themes. The goal — the go-to code block component across frontend frameworks. npm install bxp-code npm: https://lnkd.in/dcZW7J5v Docs: https://lnkd.in/dVqcqN-z Playground: https://lnkd.in/dGX-4zbZ GitHub: https://lnkd.in/d2qPCt3e The VS Code theme it was born from: https://lnkd.in/dPZpgA23 A star or share goes a long way. Feedback welcome. #react #reactjs #npm #javascript #typescript #shiki #prettier #vscode #opensource #frontend #webdev #webdevelopment #syntaxhighlighting #codeformatting #developertools #dx #programming #coding #softwareengineering #vite #vitepress #vue #svelte #reactnative #github #nodejs #darkmode #buildinpublic #devcommunity #100daysofcode #uicomponents #componentlibrary #devtools #techcommunity

React.memo() - yeh optimization tool hai but use wisely, bhai! React.memo is a higher-order component that memoizes the result. It only re-renders if props have changed (shallow comparison by default). Use React.memo when: - Component renders often with the same props - Component is expensive to render - You're passing it as a prop to memoized children Don't use React.memo when: - Component re-renders with different props most of the time - Component is cheap to render - You're just trying to "optimize" without measuring Remember: React.memo has its own cost. If you're memoizing everything, you're probably doing it wrong. Measure first, optimize second! Also, if you're passing objects or functions as props, they'll be different references each time, making React.memo useless. Use useMemo/useCallback for those. #reactjs #webdevelopment #javascript #frontend #coding #performance #reactmemo #programming #indiancoders #tech

🚀 What is a Component in React? One of the most powerful ideas in React is the concept of components. A component is simply a reusable building block of a user interface. Instead of writing the entire webpage in one place, React allows developers to break the UI into smaller parts like: • Navbar • Login Form • Product Card • Dashboard Widget • Footer Each component handles its own logic and appearance, making applications modular, reusable, and easier to maintain. Think of it like building a website with LEGO blocks — small pieces combine to create a complete application. This approach leads to: ✔ Cleaner architecture ✔ Faster development ✔ Reusable code ✔ Scalable applications Learning these fundamentals makes building modern web applications much easier. Still learning. Still building. 🚀 — Anuj Pathak #reactjs #javascript #webdevelopment #frontenddevelopment #softwareengineering #developersoflinkedin #coding #programming #techlearning #learninginpublic #buildinpublic #softwaredeveloper

React keys and reconciliation - yeh under-the-hood concept hai but understanding it helps a lot! React uses a diffing algorithm to update the DOM efficiently. Keys help React identify which items have changed, been added, or removed. When you don't provide keys (or use wrong keys): - React can't efficiently update the DOM - Components might re-render unnecessarily - State might get mixed up between items - Performance suffers When you provide correct keys: - React knows exactly what changed - Only necessary updates happen - Component state is preserved correctly - Better performance The reconciliation process is why React is fast. But it relies on you providing correct keys. Don't break the algorithm by using wrong keys! Always use stable, unique, predictable keys. Your app will thank you! 🚀 #reactjs #webdevelopment #javascript #frontend #coding #reactinternals #performance #programming #indiancoders #tech

🚀 What is State in React? In React, State is the data that controls how a component behaves and what it displays. Unlike static content, state allows components to change dynamically based on user interaction or application logic. For example: A counter increasing when a button is clicked Form inputs updating as a user types A shopping cart showing added products Whenever the state changes, React automatically updates the UI, making applications interactive and responsive. That’s why state is a core concept when building modern web applications with React. Still exploring the fundamentals and building in public. 🚀 — Anuj Pathak #reactjs #javascript #webdevelopment #frontenddevelopment #softwareengineering #developersoflinkedin #programming #techlearning #codinglife #learninginpublic #softwaredeveloper