💡 Understanding Different Types of State in React When working with React, mastering state management is key to building scalable and maintainable applications. Not all state is the same — and knowing the different types can help you design better components and avoid unnecessary complexity. Here’s a quick breakdown 👇 🔹 1. Local State (Component State) Managed within a single component using useState or useReducer. 👉 Best for UI-specific data like form inputs, toggles, or counters. 🔹 2. Global State Shared across multiple components. 👉 Managed using tools like Context API, Redux, or Zustand. 👉 Useful for themes, authentication, user data, etc. 🔹 3. Server State Data that comes from external APIs. 👉 Managed using libraries like React Query or SWR. 👉 Handles caching, syncing, and background updates efficiently. 🔹 4. URL State State stored in the URL (query params, route params). 👉 Useful for filters, pagination, and sharable app states. 🔹 5. Form State Dedicated state for managing forms. 👉 Libraries like React Hook Form or Formik simplify validation and handling. 🔹 6. Derived State State computed from existing state or props. 👉 Avoid storing it separately unless necessary — derive it when needed. 🔹 7. UI State Controls visual aspects like modals, dropdowns, loaders, etc. 👉 Usually local but can be global depending on use case. ⚡ Key Takeaway: Not every piece of data needs to be global. Choosing the right type of state improves performance, readability, and maintainability. 📌 Ask yourself: “Where should this state live?” — The answer often defines the architecture of your app. #React #FrontendDevelopment #JavaScript #WebDevelopment #StateManagement #ReactJS

Topic: Debouncing & Throttling in React – Fixing Performance Bottlenecks ⚡ Debouncing vs Throttling in React – Stop Killing Your Performance Ever built a search input that calls API on every keystroke? 😅 That’s how you accidentally DDoS your own backend. Let’s fix it the right way 👇 🔹 The Problem onChange={(e) => fetchData(e.target.value)} 👉 API call on every key press 👉 Too many requests 👉 Laggy UI 🔹 Debouncing (Most Common) Wait until user stops typing. ✔ Best for search inputs ✔ Reduces API calls const debouncedSearch = useMemo( () => debounce(fetchData, 500), [] ); 🔹 Throttling Limit how often a function runs. ✔ Best for scroll / resize events ✔ Runs at fixed intervals const throttledScroll = throttle(handleScroll, 300); 💡 Key Difference 👉 Debounce → wait, then execute 👉 Throttle → execute at intervals 🔹 Real-World Use Cases ✔ Search bars ✔ Infinite scrolling ✔ Window resize handlers ✔ Analytics tracking 📌 Golden Rule Don’t react to every event. React smartly. 📸 Daily React tips & visuals: 👉 https://lnkd.in/g7QgUPWX 💬 Where have you used debouncing or throttling in your app? #React #ReactJS #FrontendPerformance #JavaScript #WebDevelopment #DeveloperLife #Optimization

React developers already know how to build GUIs. With Ink, that same knowledge translates directly to building CLIs — more precisely, TUIs — rich, interactive, full-screen terminal experiences. Built nosleep — a CLI tool that stops your mac machine from sleeping 😴 Same useState. Same hooks. Same component composition. Just rendered in your terminal instead of a browser. And I'm not alone in this thinking: → Claude Code — built with Ink → Gemini CLI — built with Ink → GitHub Copilot CLI — built with Ink These aren't hobby projects. They're the most-used AI developer tools right now — and they're all React component trees running in a terminal. nosleep is small. Intentionally so. It's a proof of concept that if you know React, you already know how to build powerful terminal tools. The developer experience is surprisingly great — hot reload, Flexbox layouts, TypeScript, reusable components. It genuinely feels like building a web app. If you've been sleeping on Ink — now's the time to wake up. (pun very much intended 😄) 🔗 https://lnkd.in/dehHxS_h 🔗 https://lnkd.in/diEeUg2p #Ink #CLI #TUI #DeveloperExperience #OpenSource #DevTools #React #TypeScript

WebAssembly Explained: Faster, Smarter Web Apps ~ I recently spent some time understanding WebAssembly (Wasm), and it completely changed how I think about performance on the web. WebAssembly is often described as a "low-level binary format," but in simpler terms—it’s a way to run super-fast code in the browser without relying only on JavaScript. What clicked for me is this: Wasm isn’t here to replace JavaScript. It works with it. Think of JavaScript as the brain handling UI and interactions, while WebAssembly acts like a high-performance engine doing the heavy lifting behind the scenes. Here’s why that matters: • You can write code in languages like Rust or C++ • Compile it into a .wasm file • Run it in the browser at near-native speed That opens up a whole new category of web applications. I’ve started noticing Wasm behind things like: • Browser-based games that feel like desktop apps • Video and image processing tools running smoothly online • Complex simulations and developer tools directly in the browser It’s basically shrinking the gap between web apps and native software. But it’s not perfect. Wasm still depends on JavaScript for many browser-level interactions, and debugging isn’t as straightforward yet. Also, for simple UI logic, JavaScript is still the better choice. So the real takeaway for me wasn’t "Wasm is better than JavaScript." It was this: Use the right tool for the right job. If performance becomes a bottleneck, WebAssembly is a powerful option to unlock the next level. I’m curious—have you come across a real-world app where WebAssembly made a noticeable difference? #WebAssembly #WebDevelopment #JavaScript #PerformanceEngineering #FrontendDevelopment #SoftwareEngineering #WebApps #TechLearning

🚀 Day 38 - Countries Search App 🌍 Today I built a Countries Search Page using JavaScript by working with real-world API data...! 🔍 What I learned: • How to make API calls using fetch() • Handling asynchronous data with .then() • Showing a loading spinner while fetching data • Dynamically creating elements using DOM manipulation • Implementing real-time search with input event • Filtering data using .filter() • Rendering UI based on user input 🛠️ What I built: ✔️ Search countries by name ✔️ Display country flag, name, and population ✔️ Loader while fetching data ✔️ Clean responsive UI using Bootstrap This project helped me understand how real applications fetch and display live data...! Project Links • GitHub Repo: https://lnkd.in/dc2u6QUU • Live Demo: https://lnkd.in/dahs_-Dv Small projects like this are building my confidence step by step 💪 #Day38 #LearnInPublic #JavaScript #WebDevelopment #Frontend #CodingJourney #100DaysOfCode

💻 Built a Nested Checkboxes Component using React Worked on a Nested Checkboxes UI where parent-child selection stays perfectly in sync across multiple levels. Features: • Checking a parent selects all its child checkboxes • Unchecking a parent clears all nested children • If all children are checked → parent auto-checks • If any child is unchecked → parent updates accordingly • Supports deeply nested structures What I learned: • Implementing top-down (state propagation) and bottom-up (state aggregation) approaches in a tree • Building recursive components to render hierarchical data • Managing complex state updates for nested structures in React • Keeping UI and data consistent across multiple levels • Writing optimized logic to avoid unnecessary re-renders This was a great exercise in understanding how to handle tree-like data structures in React. Concept inspiration from learning resources by Akshay Saini 🚀 NamasteDev.com. Demo 👇 #ReactJS #FrontendDevelopment #JavaScript #BuildInPublic #WebDevelopment

🚀 React Series Part 6: Handling User Input (Forms & Events) So far, we learned how to store data (useState) and react to changes (useEffect). Now let’s make our app interactive 👇 👉 How do we capture user input in React? 💡 Events in React React handles events similar to JavaScript, but with a clean, consistent API. Example: <button onClick={() => console.log("Clicked!")}> Click Me </button> 📌 Key point: 👉 We pass a function, not a function call 💡 Handling Input Fields In React, form inputs are usually controlled components 👉 Meaning: React controls the input value via state const [name, setName] = useState(""); <input type="text" value={name} onChange={(e) => setName(e.target.value)} /> 🔥 Why Controlled Components? Because React becomes the single source of truth Benefits: • Easy validation • Better control over UI • Predictable behavior 🔁 Flow of Data in Forms 👉 User types → Event triggers 👉 onChange updates state 👉 State updates UI This keeps everything in sync 🔄 ⚠️ Common Mistake ❌ Forgetting value → input becomes uncontrolled ❌ Not updating state → UI won’t reflect changes 🧠 Simple takeaway Events = User actions 🖱️ State = Stores input ✍️ Controlled components = React controls the form 🎯 Let’s keep going 🚀 #ReactJS #Learning #FrontendDev #FullStackDev

🚀 Understanding Event Handling in React — Simplified! In React, user interactions drive everything. 👉 Clicking a button 👉 Typing in input 👉 Submitting a form All of this is handled through events. 💡 What is Event Handling in React? Event handling allows you to respond to user actions using functions. <button onClick={handleClick}>Click Me</button> 👉 When clicked → handleClick runs ⚙️ How it works function App() { const handleClick = () => { console.log("Button clicked!"); }; return <button onClick={handleClick}>Click</button>; } ✅ Pass function reference (not function call) ✅ React handles binding automatically 🧠 Key Differences from HTML 🔹 HTML: <button onclick="handleClick()">Click</button> 🔹 React: <button onClick={handleClick}>Click</button> 👉 CamelCase events 👉 Pass functions, not strings 🧩 Common Events in React ✔ onClick → Button click ✔ onChange → Input change ✔ onSubmit → Form submit ✔ onMouseEnter / onMouseLeave ✔ onKeyDown / onKeyUp 🔥 Best Practices (Most developers miss this!) ✅ Always pass function reference ✅ Use arrow functions when needed ✅ Keep handlers clean and reusable ❌ Don’t call function directly in JSX ⚠️ Common Mistake // ❌ Wrong <button onClick={handleClick()}> 👉 This runs immediately instead of on click 💬 Pro Insight React uses a Synthetic Event system: 👉 Normalizes events across all browsers 👉 Improves performance and consistency 📌 Save this post & follow for more deep frontend insights! 📅 Day 9/100 #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment #ReactHooks #SoftwareEngineering #100DaysOfCode 🚀

I used to think React components were only for displaying data. But what happens when you need to fetch an API, start a timer, or change a page title? Today, I’m documenting how to handle these "Side Effects" using the useEffect hook. Think of it as a remote control for your component. It lets the UI "reach out" to external systems without blocking the main screen. Here is what I’m practicing to keep my apps synchronized: 1) The Dependency Array: This is the control center. I’m learning how an empty array [] makes the code run only once, while adding specific variables makes it run only when they change. 2) Pure Components: I'm focusing on keeping my components "pure"—data goes in, and UI comes out—while letting useEffect handle everything that happens "outside" that flow. 3) The Cleanup: I learned that if I start a timer or a subscription, I have to "turn off the lights" when the component is finished. Using the return pattern prevents memory leaks. I'm still learning the ropes, but mastering this hook is the key to building real-world, data-driven applications. Tomorrow, I’m tackling the "Prop Drilling" nightmare with the React Context API! Quick question: When you first started with React, did you find the dependency array confusing? It definitely took me a minute to get it right! #CodeWithWajid #ReactJS #WebDevelopment #30DaysOfCode #LearningToCode #BuildingInPublic #Frontend #useEffect

🚀 Just Built: Async Weather Tracker 🌦️ I recently developed a modern weather web application using core frontend technologies, and it turned out to be a great hands-on experience in working with asynchronous JavaScript. 🔍 What the project does: The app allows users to search for real-time weather data of any city, or fetch it instantly using their current location. 💡 Key Features: • 🌍 Real-time weather using OpenWeatherMap API • 📍 Geolocation-based weather detection • 🌈 Dynamic background changes based on weather conditions • 🧠 Smart suggestions (e.g., carry umbrella, stay hydrated) • 🌙 Dark / Light mode toggle • 🗂️ Search history using localStorage • ⚡ Event Loop visualization (microtask vs macrotask logs) 🛠️ Tech Stack: HTML • CSS • JavaScript (Async/Await, Fetch API) 🎯 What I learned: This project helped me deeply understand: ✔ Async JavaScript & Event Loop ✔ API integration & error handling ✔ DOM manipulation & UI updates ✔ Local storage for persistence 🌐 Live Demo:https://lnkd.in/g5SSsc_U 💻 GitHub Repo:https://lnkd.in/gS3M8gs6 I’m continuously working on improving the UI and adding more advanced features like charts and forecasts. Would love your feedback and suggestions! 🙌 #webdevelopment #javascript #frontend #project #github #learning #coding #weatherapp #async #students #developers