React Error Boundaries Prevent UI Crashes

Why React components re-render 🤔 A component re-renders when it runs again to update the UI. Main reasons: • State changes • Props changes • Parent component re-renders Key insight: Re-renders are a normal part of how React works. But unnecessary re-renders can impact performance. Simple rule: Expected re-render → fine ✅ Unnecessary re-render → avoid ❌ Small concept, big impact ⚡ #ReactJS #FrontendDevelopment #JavaScript #ReactHooks #Performance #LearningInPublic

I built the same simple form in two ways: - React Hook Form + MUI → 136 lines - Dashforge → 74 lines Same result. This is a simple case… imagine when it gets complex. Curious to hear how others are handling forms in React. #react #reacthookform #mui #frontend #webdevelopment #javascript #typescript #developerexperience

Day 94 / 365 👨💻 Kept building consistency with React practice. 🧩 Worked on a small component tweak 🔁 Observed how UI updates with state changes ⚙️ Fixed minor issues in logic 🧠 Focused on keeping code simple and readable #365DaysOfCode #React #JavaScript #Frontend

useEffect runs after every render by default. Here's how to control it: ✅ Run once on mount: useEffect(() => { ... }, []) ✅ Run when a value changes: useEffect(() => { ... }, [value]) ✅ Cleanup on unmount: useEffect(() => { return () => cleanup() }, []) One hook. Three behaviors. Know the difference. 🎯 #ReactJS #Frontend #JavaScript #WebDev

⚛️ Why are Keys Important in React? Keys help React identify and track elements in a list. When the list changes (add, remove, reorder), React uses keys to determine what exactly changed, allowing it to update only the necessary elements. Without keys, React may re-render the entire list or mix up component state, leading to performance issues and unexpected UI bugs. ✅ Enables efficient re-renders ✅ Preserves component state correctly ❌ Missing or unstable keys cause inefficient updates Rule of thumb: Always use a unique and stable ID as a key — avoid array indexes unless the list is static. #React #JavaScript #FrontendDevelopment #ReactJS #WebPerformance #Keys #WebDev

One small mistake I used to make in React.js 👇 I was re-rendering components unnecessarily, which was affecting performance. What helped me fix it: • Using React.memo for pure components • useCallback to prevent function re-creation • useMemo for expensive calculations 📊 Result: Better performance and smoother UI experience Sometimes small optimizations make a big difference ⚡ #ReactJS #FrontendDeveloper #WebPerformance #JavaScript

Built two practical React features today: • Back to Top • URL Validation Solved on Namaste Dev Platform NamasteDev.com sir Akshay Saini 🚀 Focused on clean logic, reusable components, and real-world usability. Consistent small wins → long-term growth. #ReactJS #Frontend #JavaScript #WebDevelopment #LearningInPublic

Day 97 / 365 👨💻 Stayed consistent with React practice. 🧩 Tweaked a small component for better structure 🔁 Observed state changes and UI updates ⚙️ Simplified some existing logic 🧠 Focused on keeping things clean and understandable #365DaysOfCode #React #JavaScript #Frontend

just published part 2 of my React internals series , this one covers what actually happens when you call setState and how does re-rendering works. part 1 (initial render): https://lnkd.in/dycpqavw part 2 (re-render): https://lnkd.in/d4tWTwmk #react #javascript #frontend #webdev

Hydration issues in Next.js can break your UI silently. No errors. Just weird behavior. Here’s why 👇 Server renders HTML. Client re-renders same component. If output differs: ❌ Hydration mismatch Common causes: ✖ Using random values (Math.random, Date.now) ✖ Accessing window during SSR ✖ Conditional rendering differences Result: → UI flicker → Unexpected bugs What works: ✔ Keep server & client output consistent ✔ Move client-only logic inside useEffect ✔ Avoid non-deterministic values Key insight: SSR means your code runs twice. If results differ… Your UI becomes unpredictable. #NextJS #ReactJS #Frontend #SSR #JavaScript #SoftwareEngineering #Debugging #Engineering #WebDevelopment