In React, a component re-renders for only a few clear reasons: 1) Parent re-rendered: When a parent component updates, its children are rendered again by default. 2) Initial mount: The component is rendering for the very first time. 3) State or context changed: The component is using state, props, or a hook that has triggered an update. If any of these happen, React will run the component again. Knowing this is key when you want to improve performance and avoid unnecessary renders. Instead of guessing, focus on these three triggers and optimize around them. Happy coding! #react #webdevelopment #javascript #reactoptimization

Excited to share a project I recently developed — a QR Code Generator that instantly converts text or URLs into scannable QR codes. 🛠 Tech Stack: • React (Vite) • JavaScript • qrcode package • CSS ✨ Features: 🔹 Real-time QR code generation 🔹 Instant updates on input 🔹 Clean & responsive UI 🔹 Fast build using Vite Through this project, I strengthened my understanding of: ✔ React state management ✔ Third-party package integration ✔ Component structuring ✔ Performance optimization with Vite 🌐 Vercel Live Link - https://lnkd.in/g_PVUShV 💻 GitHub repository link - https://lnkd.in/gbjJ7t2D #ReactJS #FrontendDeveloper #WebDevelopment #JavaScript #Projects

While starting to learn React, I decided to keep things simple. I built the same Todo List twice with the same UI design: First using pure JavaScript, Then rebuilding it with React. This helped me clearly see the difference between: • JavaScript DOM manipulation • React’s component-based thinking Project features: • Add new tasks • Delete tasks • Toggle task completion • Search tasks • Filter tasks (All / Completed / Not Completed) Small project, but a big learning step for me. Live Demo: JS version: https://lnkd.in/ebWQRNar React version: https://lnkd.in/eJt2Svj7 #React #JavaScript #FrontendDevelopment #WebDevelopment #LearningInPublic #TodoApp

Word & Letter Counter using React! As part of my journey learning React, I built a simple yet useful Word and Letter Counter application. ✨ Features: ✔ Real-time word count ✔ Live letter count while typing ✔ Clean and responsive UI ✔ Built using React functional components and useState hook This helped me strengthen my understanding of: 🔹 Event handling in React 🔹 State management with hooks 🔹 Component styling with CSS 🔹 Writing cleaner and more efficient logic #ReactJS #FrontendDevelopment #WebDevelopment #LearningJourney #JavaScript

🤯 Do you want a pro React tip? I started naming my useEffect functions, and its beautiful 👇 React code is full of hooks noise like useState, useEffect, useRef, and useMemo everywhere. It's hard to quickly scan a file and understand what's actually happening because the lifecycle stuff dominates everything. I started using named functions instead of arrow functions for my effects, and it made a massive difference. Here's why: 1️⃣ Cuts through the noise — When you have multiple useEffects in a component, descriptive names like synchronizeMapZoomLevel or fetchUserData let you scan the file and immediately understand the flow without reading implementation details. 2️⃣ Stack traces — If something breaks, the function name shows up in the error stack. Way easier to debug than an anonymous function at line 47. 3️⃣ Forces single responsibility — When you try to name an effect and struggle? That's usually because it's trying to do too many things. It naturally pushes you to split things up or remove them altogether (You might not need an effect) Some people prefer to extract everything into custom hooks immediately, which is great too. But this works really well for simpler cases where a full hook feels like overkill. Have you tried this? Or do you go straight to custom hooks for everything? #React #JavaScript #WebDev #CleanCode

Today I learned how useEffect cleanup actually works in React — and it completely changed how I think about side effects. When we use useEffect, it runs after render. But what many beginners ignore is the cleanup function. Why is cleanup important? Prevents memory leaks Stops unnecessary API calls Removes event listeners properly Clears intervals and timeouts Example: When you add an event listener inside useEffect, you must remove it when the component unmounts. Otherwise, it keeps running in the background. That’s where cleanup comes in. useEffect(() => { const handleResize = () => console.log("Resized"); window.addEventListener("resize", handleResize); return () => { window.removeEventListener("resize", handleResize); }; }, []); The function returned inside useEffect runs: Before the next effect runs When the component unmounts Small detail. Big difference in performance. React is simple — until you understand the details. #ReactJS #FrontendDeveloper #JavaScript #WebDevelopment #LearningInPublic #100DaysOfCode

🚨 Stop using useEffect for everything in React. If you're still using useEffect to: • Derive state from props • Transform data for rendering • Handle simple computations You're probably writing more bugs than you think. 💡 React tip: 1️⃣ Derived data belongs in useMemo, not useEffect 2️⃣ Event-driven logic belongs in handlers 3️⃣ Effects are for synchronization with external systems The less useEffect you write, the more predictable your component becomes. Clean React code is about eliminating unnecessary effects. What’s one place you removed useEffect and simplified your code? #ReactJS #FrontendDevelopment #JavaScript #SoftwareEngineering #CleanCode

⚛️ Understanding JSX in React JSX allows us to write HTML-like syntax directly inside JavaScript, making UI code more readable and expressive. Instead of separating logic and markup, JSX lets them live together inside React components. Under the hood, JSX is not HTML — it gets transpiled into React.createElement, which React uses to build the Virtual DOM efficiently. ✅ Combines JavaScript logic with UI ✅ Easier to read and maintain ✅ Makes component-based development intuitive JSX is one of the reasons React feels so natural when building dynamic user interfaces. #React #JSX #JavaScript #FrontendDevelopment #WebDevelopment #ReactJS

Just built an Image Search App using HTML, CSS, and JavaScript! This beginner-level project helped me understand: • API fetching • Async/await • DOM manipulation • Real-time search functionality • Handling user input dynamically Instead of only watching tutorials, I’m focusing on building projects to strengthen my logic and problem-solving skills. 🔗 Live Demo: https://lnkd.in/dJFqjFzg Small steps every day towards becoming a better developer 💻✨ #JavaScript #WebDevelopment #FrontendDeveloper #LearningByBuilding #100DaysOfCode

React Tip: Structure your component files Many React components become difficult to maintain because everything is written in random order inside one file. A simple structure improves readability a lot. Recommended order inside a component: 1. Imports 2. Props / Types 3. Helper or utility functions 4. State and Effects (useState, useEffect, etc.) 5. Guard clauses (loading / error handling) 6. JSX return Why this helps: • Faster understanding of the code • Easier debugging • Cleaner code reviews • Better collaboration in teams In React, performance matters — but readability matters just as much. Well-structured components make large applications easier to scale and maintain. #ReactJS #FrontendDevelopment #JavaScript #CleanCode