Building a React Weather App for Beginners

Built a small Background Changer app while learning React. Simple idea, but a good exercise for understanding components and data flow. Instead of hardcoding colors, I created a reusable Button component and used .map() to render them dynamically with props. Also experimented with Tailwind CSS for smooth hover effects and a small magical text touch. ✨ Step by step, React concepts are starting to click. Click carefully… It’s magic. 😉 #reactjs #webdevelopment #chaiaurcode #tailwindcss

⚡ React Performance Optimization Tip Your React app is slow? This might be the reason 👇 Unnecessary re-renders. Solution → React.memo const Child = React.memo(({data}) => { console.log("render") return {data} }) Now component only re-renders when props change. 💡 Use when: • Large list rendering • Heavy components • Performance issues Small optimization → Big performance gain 🚀 I'm sharing daily React tips while preparing for new opportunities. Follow for more React learning. #reactjs #performance #frontenddeveloper #mernstack #javascript

🚀 Confused between Props and Context API in React? Let’s simplify it. When I started building React apps, I relied heavily on props to pass data between components. 💡 It works well… until your app grows. 👉 Problem: Passing data through multiple layers (props drilling) becomes messy and hard to maintain. 💡 Solution: Use Context API when needed. Example: const UserContext = React.createContext(); <UserContext.Provider value={user}> </UserContext.Provider> 👉 Now any component can access user without passing props manually. 🔍 Props vs Context API: ✔ Props • Best for simple & direct data passing • Easy to understand • Great for small apps ✔ Context API • Avoids props drilling • Shares global data easily • Better for medium-scale apps ⚠️ But don’t overuse Context! Too much global state can: • Make components harder to reuse • Impact performance if not optimized 🔥 Lesson: Use Props by default. Use Context when props become a problem. What do you prefer — Props, Context API, or Redux? #ReactJS #JavaScript #WebDevelopment #FrontendDevelopment #CodingTips #FullStackDevelopment

⚛️ Learning React Hooks - useState I recently explored one of the core concepts of React — Hooks (useState) — and applied it by building a simple Counter App. Here’s what I implemented: ✔️ Managed state using useState ✔️ Built increment & decrement functionality ✔️ Added boundary conditions (0 to 20 limit) ✔️ Understood how React re-renders on state updates Code snippet: let [counter, setCounter] = useState(0); const addValue = () => { setCounter(counter + 1); }; const removeValue = () => { setCounter(counter - 1); }; 💡 This project helped me clearly understand how state works in React and why hooks are so powerful for building interactive UIs. #ReactJS #JavaScript #WebDevelopment #FrontendDevelopment #ReactHooks #LearningInPublic

I almost shipped a slow React app. Not broken. Not buggy. Just… slow. Everything worked. But something felt off — clicks felt delayed, UI had that subtle lag that users notice even if they can't explain it. I opened React DevTools Profiler and what I saw genuinely surprised me. One small interaction was triggering re-renders across components that had absolutely nothing to do with it. Functions being recreated on every render. Child components updating for no reason. I wasn't writing bad code. I just didn't understand what React was actually doing under the hood. Three things that changed everything for me: React.memo — child components stopped re-rendering unless their props actually changed useCallback — function references stayed stable between renders instead of being recreated every time useMemo — expensive calculations stopped running on every single render The difference was immediate. The app felt alive in a way it didn't before. No library. No major refactor. Just understanding how React works and using the tools it already gives you. If your React app feels sluggish and you haven't opened the Profiler yet — that's your next 30 minutes sorted. #ReactJS #Frontend #JavaScript #WebDevelopment #Programming

"React performance: one trick that changed how I code" I used to re-render my entire app on every state change. Here's what I was missing... After years of building React apps, the single biggest performance win I found was understanding when components re-render — and stopping unnecessary ones dead in their tracks. The fix? Splitting state smartly. Keep fast-changing state close to where it's used, not at the top of your tree. 3 things I now do on every project: ✅ Use React.memo for pure components ✅ Move state down — don't lift it higher than needed ✅ Use useCallback/useMemo only when profiling shows it's needed (not by default) The last point is one most devs get wrong. Premature optimization with useMemo can actually slow things down. What's your go-to React performance tip? Drop it below 👇 #ReactJS #WebDevelopment #Frontend #JavaScript #SoftwareEngineering

I recently spent time debugging a slow React Native screen, and it reminded me how small things can destroy mobile performance When my React Native app feels slow or laggy, these are the first 5 things I always check: 1. Images that are too heavy Large images can quietly kill performance. Compress them and make sure the resizeMode actually fits the use case. 2. Too many unnecessary re-renders Components re-rendering again and again can slow everything down. Using React.memo or useCallback in the right places can make a noticeable difference. 3. Using ScrollView for big lists This is a common mistake. ScrollView renders everything at once. For long lists, FlatList is almost always the better choice. 4. Heavy work happening on the JS thread If expensive calculations run on the main thread, the UI will stutter. Moving that work with InteractionManager can help keep the interface smooth 5. Bloated bundle size Sometimes the problem is simply too many dependencies. It’s worth reviewing your packages and removing the ones you don’t actually need. Good performance usually goes unnoticed. But the moment an app lags, freezes, or stutters… users notice immediately. Curious — which one has caused the biggest issues in your projects? #ReactNative #Performance #MobileDev #JavaScript #CodingTips #AppDevelop

Day 10 #100DaysOfCode 💻 Today I learned the basics of React.js. At first, React felt confusing. There are many new concepts like components and JSX. But I started understanding that React helps us build UI using reusable components. One simple example I tried today: function App() { return ( <h1>Hello React 🚀</h1> ); } export default App; This small component renders a heading on the page. It looks simple, but it shows how React components work. Still learning and exploring. Step by step I will get better. #Akbiplob #ReactJS #JavaScript #WebDevelopment #FrontendDevelopment

Stop building boring apps… so I challenged myself 👇 I recently built a Todo App using React and Redux Toolkit, focusing on clean UI and efficient state management. The goal was to understand better how to structure applications using global state and keep the codebase simple and maintainable. ✨ Features: ✔ Add & Delete Todos ✔ Clean UI with Tailwind CSS ✔ State management with Redux Toolkit This project was a great exercise in applying core frontend concepts in practice. If you want to learn about code, you can see the GitHub repository. 🔗 GitHub Repository: #React #ReduxToolkit #FrontendDevelopment #JavaScript #WebDevelopment

💥 Most developers assume using useMemo and useCallback everywhere will automatically make a React app faster. Sounds logical: Memoize more → fewer re-renders → better performance. But in real-world apps, it often doesn’t work like that. I’ve seen this pattern quite often — developers start adding these hooks with good intent, but without actually measuring anything. • Wrapping functions with useCallback • Memoizing even simple values • Adding optimizations “just in case” And then… 🚨 No real performance improvement 🚨 Code becomes harder to read and maintain 🚨 Debugging gets more complicated 🚨 Sometimes performance even degrades 🧠 The important part: useMemo and useCallback are not free. They introduce overhead — memory usage, dependency comparisons, and extra complexity. ⚡ What actually works better: • Understanding why components re-render • Improving state structure • Splitting components smartly • Measuring performance using React DevTools 🔥 My take: React is already quite fast. Blindly adding memoization often creates more problems than it solves. 💡 Rule I follow: If I haven’t measured a real performance issue, I don’t reach for useMemo or useCallback. Curious — do you think these hooks are overused in most React apps? 🤔 #ReactJS #FrontendDevelopment #WebPerformance #JavaScript #SoftwareEngineering #ReactPerformance