React Conditional Rendering with if else, Ternary Operator and &&

#Question: After clicking button multiple times, what will be printed in console? import React, { useState, useEffect } from "react"; export default function App() { const [count, setCount] = useState(0); useEffect(() => { setInterval(() => { console.log(count); }, 1000); }, []); return ( <button onClick={() => setCount(count + 1)}> Count: {count} </button> ); } #Comment #Answer ? #ReactJS #JavaScript #FrontendDeveloper #WebDevelopment #FAANG #CodingInterview #ReactHooks #SoftwareEngineer #TechInterview

Your Next.js app has 3 dead API routes. Most teams miss it. Profile, notifications, settings — 3 routes I deleted last month. Server Actions made them obsolete and most teams haven't noticed yet. Full breakdown (7 min read) → https://lnkd.in/geeY49dG #ReactJS #Frontend #JavaScript #TypeScript #WebDev #UIEngineering #NextJS

⚡ 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

your useEffect runs once. then twice. then forever. the browser fan spins. console logs spam. the app freezes. you panic. why it happens: useEffect with missing or wrong dependencies re-runs every render. if your effect causes a state update, that triggers a re-render, which runs the effect again, which updates state again. infinite loop. always add dependency array. always. #reactjs #javascript #webdevelopment #buildinpublic #typescript

Day 18 #100DaysOfCode 💻 Today I learned React Routing (React Router). React Router helps create multiple pages in a single-page application (SPA) without reloading the browser. It allows smooth navigation between components like Home, About, and Contact. Key idea: Use BrowserRouter, Routes, and Route to define paths and components. import { BrowserRouter, Routes, Route } from "react-router-dom"; import Home from "./Home"; import About from "./About"; function App() { return ( <BrowserRouter> <Routes> <Route path="/" element={<Home />} /> <Route path="/about" element={<About />} /> </Routes> </BrowserRouter> ); } This makes navigation faster and keeps the app dynamic and user-friendly. Small step forward in my React journey 🚀 #React #ReactRouter #WebDevelopment #JavaScript #FrontendDevelopment #Akbiplob

React Server Components are changing how we build web apps. - They run on the server, so less JavaScript is sent to the browser. This makes apps faster and lighter. - They are now the default in Next.js. - But you need to understand server and client boundaries, and there are some limitations. - Still, it’s a big step towards better performance. What do you think about it? #React #NextJS #WebDevelopment #JavaScript

Most Next.js developers are still using Pages Router in 2026. Here's why that's a mistake. 🧵 When Next.js released the App Router I ignored it for months. "Too complex. Pages Router works fine." Then I built a production app with App Router... And I never went back. The real difference? Pages Router: ❌ No Server Components ❌ Slower data fetching ❌ Being phased out slowly App Router: ✅ Server Components by default ✅ Fetch data directly in components ✅ Built-in layouts ✅ The future of Next.js If you're starting a new project in 2026 there's only one right answer. App Router. Every time. Are you still on Pages Router? Tell me why 👇 #NextJS #ReactJS #WebDevelopment #FullStackDeveloper #TypeScript #JavaScript #Frontend #100DaysOfCode #BuildInPublic #LahoreTech

Most Next.js developers are still using Pages Router in 2026. Here's why that's a mistake. 🧵 When Next.js released the App Router I ignored it for months. "Too complex. Pages Router works fine." Then I built a production app with App Router... And I never went back. The real difference? Pages Router: ❌ No Server Components ❌ Slower data fetching ❌ Being phased out slowly App Router: ✅ Server Components by default ✅ Fetch data directly in components ✅ Built-in layouts ✅ The future of Next.js If you're starting a new project in 2026 there's only one right answer. App Router. Every time. Are you still on Pages Router? Tell me why 👇 #NextJS #ReactJS #WebDevelopment #FullStackDeveloper #TypeScript #JavaScript #Frontend #100DaysOfCode #BuildInPublic #LahoreTech

🔥 Are you using React 19 to its full potential—or just scratching the surface? With every new release, React evolves. But how do you keep up and truly master the latest features, best practices, and real-world patterns? Our latest blog breaks down the essentials of React 19 so you can confidently build cleaner, faster, and future-ready apps. Ready to level up your React game? Discover what most developers miss👇 https://lnkd.in/dmZmEM5b #React #WebDevelopment #JavaScript

🗂️ Does your app load 10,000 items at once? That's a performance disaster waiting to happen. Learn how pagination works, why it matters, and build a real React component from scratch — step by step. 🚀 Full guide is live on hamidrazadev.com — link in bio! #webdev #reactjs #javascript #frontenddevelopment #programminglife #developerlife #hamidrazadev