Carlos Braga’s Post

Weather App Project – React & API Integration I recently built a Weather App using React and the OpenWeather API. Through this project, I learned how to: • Fetch real-time data using APIs • Handle errors like invalid city names • Manage state with React Hooks • Improve UI with dynamic updates https://lnkd.in/g_KMxdMv #ReactJS #JavaScript #WebDevelopment #API #FrontendDevelopment

React 19 introduced a hook more people should be talking about: useOptimistic. It solves a problem we’ve all worked around for years. Users click a button. The app waits on the network. The UI feels slow… even when the backend is fine. useOptimistic flips that. You update the UI immediately. The async work happens in the background. If something fails, React handles the rollback. No loading flags everywhere. No fake spinners for simple interactions. Think: • Like buttons • Counters • Toggles • Any action where “instant feedback” matters more than perfect certainty The mental shift is important: Users don’t care when the server updates. They care when the UI responds. This is one of those hooks that looks small, but quietly changes how you design interactions. Curious where others are planning to use this in real apps 🤔 #React #ReactJS #ReactNative #JavaScript #WebDevelopment #FrontendDevelopment #SoftwareEngineering #Frontend

⚛️ React Tip: Stop Overusing Global State, It’s Slowing Your App Not everything belongs in Redux, Zustand, or Context. 👉 Keep UI state local: • form inputs • modals & toggles • hover states • temporary filters Why it matters: ✅ Fewer re-renders ✅ Cleaner logic ✅ Easier debugging Global state is for shared business data, not UI noise. This one change alone made our React app noticeably faster and easier to scale. What’s one thing you moved out of global state recently? #ReactTips #FrontendDevelopment #WebPerformance #CleanCode #SeniorEngineer #JavaScript #ReactJS

🙂Built a React practice project – TextUtils TextUtils is a simple text utility web app that allows users to: • Convert text to uppercase and lowercase • Count words and characters • Remove extra spaces • Get quick text-related insights Through this project, I strengthened my understanding of: ✔ React components ✔ State management (useState) ✔ Event handling ✔ Basic UI logic 🔗 Live project: https://lnkd.in/g5ZD-aG2 🔗 GitHub repository: https://lnkd.in/gwUmZErr Still learning and building step by step 😊 #ReactJS #WebDevelopment #Frontend #Learning

Day 12 – Topic: React Context API – When NOT to Use It ⚠️ React Context API – Powerful, But Easy to Misuse Context looks like the perfect solution for everything… until your app starts re-rendering like crazy 😅 Let’s understand the real use case 👇 🔹 What Context is Good For ✔ Theme (dark/light) ✔ Auth user data ✔ Language / locale ✔ App-wide config 🔹 What Context is BAD For 🚫 ❌ Frequently changing data ❌ Large dynamic objects ❌ High-frequency updates (forms, inputs) 💡 Why? Every time context changes, ALL consuming components re-render. 🔹 Better Alternatives 👉 Local state 👉 Lifting state up 👉 Zustand / Redux (for complex apps) 📌 Rule of Thumb Context is for global & stable data, not for your entire app state. 📸 Daily React tips & visuals: 👉 https://lnkd.in/g7QgUPWX 💬 What’s the biggest problem you faced with Context? 👍 Like | 🔁 Repost | 💭 Comment #React #ReactContext #FrontendDevelopment #JavaScript #WebDevelopment #ReactTips #DeveloperLife

🚨 Stop using Redux just because everyone else does. Most React beginners don’t struggle with tools they struggle with choosing the wrong one 👇 Let’s simplify state management in React 👇 🟢 useState ✅ Best for: Local component state Simple forms & UI logic ❌ Not for: Deeply shared state 🟡 Context API ✅ Best for: Theme Auth user Language settings ❌ Not for: High-frequency updates Complex app logic 🔴 Redux ✅ Best for: Large applications Complex shared state Predictable state flow ❌ Not for: Small apps Beginners without fundamentals 📌 Save this if Redux still confuses you ❤️ Like if this clarified things 🔁 Share with a React beginner #Reactactivitystatemanagement #Reacthooks #ReactJS #StateManagement #FrontendDeveloper #LearnReact #Redux #WebDevelopment

✨ Making React Filters Work with URL Query Parameters Recently built a dynamic filter system for a cabin listing app in React and learned a simple but powerful pattern: 👉 store filter state in the URL using useSearchParams instead of local React state. Why this approach works so well: • Filters persist on refresh • Filtered views are shareable via URL • UI state stays in sync with navigation Clean, predictable, and user-friendly — especially for dashboards and list-heavy apps. If you’re building filters in React, this pattern is worth considering 🚀 #React #JavaScript #WebDevelopment #Frontend #ReactRouter #CodingTips

🔥 Why Most React Apps Break at Scale React isn’t hard. Unclear responsibility is. When components handle: state + effects + logic + UI they become impossible to reason about. That’s why custom hooks matter. Custom hooks: • move behavior out of components • keep UI clean and readable • make logic predictable • help apps scale without chaos Components should show what users see. Hooks should define how things work. If a component reads easily, your architecture is improving. Clean React isn’t clever — it’s intentional. #ReactJS #CustomHooks #FrontendDevelopment #WebDevelopment #JavaScript #CleanCode #DeveloperMindset

🚀 Just finished a fun React Quiz App This project was all about combining React fundamentals with real-world logic like timers, scoring, and global state handling — not just rendering questions on the screen. 🔎 What the app does 15 React-focused quiz questions Timer — once time’s up, the quiz ends automatically ⏱️ Each question has its own score Final result shows up with an emoji based on your performance 😄 Highest score is saved and shown when you restart the quiz ⚙️ Behind the scenes Questions, answers, correct options, and scores are fetched using JSON Server Context API handles all quiz states (start, active, finished, restart) Clean flow between questions with clear state transitions ✨ Modern React setup Functional components + hooks Centralized state management using Context Clear separation between UI and logic 🧠 What I practiced & improved Managing complex state with Context API Working with timers in React Fetching data and handling async state Building interactive, user-friendly logic Check it out 👇 👉 Source Code: https://lnkd.in/dMtd7JNz Would love to hear your feedback or suggestions! 🚀 #React #Frontend #JavaScript #WebDevelopment #ReactJS