Jest for React Component Testing with React

Just completed a React Mini Project – Counter App as part of my Web Development Series. This project focuses on the core fundamentals of React: • Managing state using useState • Handling user events • Implementing increment, decrement, and reset logic • Using conditional rendering • Adding basic validation and UI feedback Instead of using advanced shortcuts, I intentionally kept the logic beginner-friendly so new developers can clearly understand how React works behind the scenes. Small projects like this build strong foundations. If you're learning React, I highly recommend building this on your own and experimenting with improvements. The full tutorial and source code are available. Link in the comments 👇 #react #reactjs #webdevelopment #frontenddevelopment #javascript #coding #learnreact #miniproject #beginners

Next.js 16 Beginner Guide is Here! 🚀 As promised, I’ve shared a complete beginner-friendly guide for Next.js 16 😊 I’ve released a 100-page PDF that helps React developers learn Next.js 16 with App Router, step by step — in a simple and practical way so you can build real-world apps with confidence. ✨ This guide is perfect for: -- React developers moving to Next.js -- Frontend devs aiming for full-stack -- Developers building production-ready projects -- Interview preparation & concept revision 📘 If you want to learn Next.js clearly, simply, and from basics — this guide is for you. 💙 💡 𝐉𝐨𝐢𝐧 𝐎𝐮𝐫 WhatApp 𝐂𝐡𝐚𝐧𝐧𝐞𝐥 Get daily updates on quizzes and tech insights! 👉 https://lnkd.in/drYyph8x 📺 Follow Mohit Decodes(https://lnkd.in/dEqvkECV) for: -- React & Next.js tutorials -- Full-stack project guides -- Interview prep content -- Daily dev tips 📤 Share with your network 💬 Comment “NEXTJS” if you want the PDF 🔖 Save for later 👍 Like if this helped #NextJS #NextJS16 #ReactJS #WebDevelopment #FrontendDeveloper #FullStackDeveloper #JavaScript #ReactDeveloper #MohitDecodes #LearnInPublic

Next.js 16 Beginner Guide is Here! 🚀 As promised, I’ve shared a complete beginner-friendly guide for Next.js 16 😊 I’ve released a 100-page PDF that helps React developers learn Next.js 16 with App Router, step by step — in a simple and practical way so you can build real-world apps with confidence. ✨ This guide is perfect for: -- React developers moving to Next.js -- Frontend devs aiming for full-stack -- Developers building production-ready projects -- Interview preparation & concept revision 📘 If you want to learn Next.js clearly, simply, and from basics — this guide is for you. 💙 📺 Follow Muhammad Nouman for -- React & Next.js tutorials -- Full-stack project guides -- Interview prep content -- Daily dev tips 📤 Share with your network 🔖 Save for later 👍 Like if this helped #NextJS #NextJS16 #ReactJS #WebDevelopment #FrontendDeveloper #FullStackDeveloper #JavaScript #ReactDeveloper #MohitDecodes #LearnInPublic

💻 React Optimization: useMemo vs useCallback When building React apps, you often hear about useMemo and useCallback—but what do they actually do, and how do they differ? Let’s break it down. 1️⃣ useMemo – Memorize Values Purpose: Cache the result of a computation so it doesn’t run on every render. ✅ Key: useMemo caches the value until numbers changes. 2️⃣ useCallback – Memorize Functions Purpose: Cache a function reference to prevent unnecessary re-renders of child components or stale closures. ✅ Key: useCallback caches the function, and if it references outer variables, it creates a closure. Analogy: useMemo → remembers the answer useCallback → remembers the instructions Key React Concepts to Know Memoize - Cache a computation’s result Cache - Stored copy of a value or function Re-render – React calling a component again to update the UI #React #ReactJS #JavaScript #FrontendDevelopment #WebDevelopment #ReactHooks #useMemo #useCallback #PerformanceOptimization #CleanCode #LearningInPublic #DevTips #TechCareer

⚛️React Journey: Performance Optimization React apps slow down from excessive re-renders, big bundles, and unoptimized lists. These 5 techniques can boost FPS by 60%+ and cut load times in half. Why Optimize? Re-renders: Every keystroke re-renders the whole tree. Bundle Size: 1MB JS = 3-5s load on mobile. Lists: 1000 items? Browser chokes without virtualization. Profile with React DevTools Profiler first, then apply. Most apps see 30-60% gains. What's your biggest perf bottleneck? #React #Performance #ReactOptimization #WebDev #JavaScript #Optimization #DeveloperLife #WebDevelopment #Frontend #Backend #FullStack #WebDevHumor #CodingLife #ProgrammerHumor #JavaScript #ReactJS #CSS #HTML #NodeJS #TechLife #DeveloperLife #SoftwareEngineering #Productivity #TechCommunity #LinkedInCreators #EngineeringCulture #Entri

"Are you tired of writing repetitive code for complex UI components in your React applications? You're not alone. Many developers struggle to keep up with the ever-growing list of JSX tags and conditional statements that make React so powerful. But fear not, because there's a solution - a library that simplifies the process and makes it easier to build robust and efficient React apps." #ReactJS #JavaScript #FrontendDevelopment #WebDev #TechUpdates #WebDevelopmentTips #ReactJsTraining #ReactLearningPath #DevelopmentBestPractices #ReactJSCommunity #ReactJSUIComponents #ReactJSStateManagement #ReactJSRouting #ReactJSComponentsLibrary #ReactJSPerformanceOptimization #ReactJSSecurityBestP #ReactJSTestingTools #YourTag #AnotherTag

🚀 30 Days of React.js Tips – Day 20 📌 Topic: Performance Optimization in React Today’s learning was focused on one of the most important aspects of modern web development — Performance Optimization. Building an application is not enough; making it fast, efficient, and scalable is what truly enhances the user experience. 📚 Key Learnings from Day 20: ✔ Understanding how unnecessary re-renders impact performance ✔ Using React.memo to prevent unwanted component updates ✔ Leveraging useMemo and useCallback to memoize values and functions ✔ Implementing Code Splitting for faster load times ✔ Applying Lazy Loading to load components only when needed 💡 Why Performance Optimization Matters: Users expect applications to be lightning-fast. Even a small delay can impact engagement and retention. Optimizing performance ensures smoother interactions, better scalability, and a more professional product. 🔑 Key Insight: 👉 Don’t optimize everything — optimize what matters. Measure performance first, then improve it. 📈 Growing every day as a developer by learning not just how to build apps, but how to build them better and faster. Consistency is the real key to mastery. 💬 Comment “Optimize” if you are focusing on improving your React app performance 👇 👍 Like & share to support this learning journey! #30DaysOfReact #ReactJS #PerformanceOptimization #FrontendDevelopment #WebDevelopment #JavaScript #MERNStack #LearnInPublic #100DaysOfCode #ReactTips #CodingJourney #SoftwareDevelopment

React 19 / Next.js App Router introduces use() — a new way to handle async data. Before: useEffect + useState + boilerplate Now: use() + Suspense = clean & declarative #react #nextjs #javascript #frontend #webdevelopment

🚀 Next.js 16 Complete Beginner's Guide 🚀 As promised, here's the complete Next.js 16 beginner's guide. I just released a comprehensive 110-page PDF guide to help React developers master Next.js 16 with the App Router! Whether you're just starting out or looking to level up your skills, this guide covers everything you need to build modern, full-stack web applications. 💡 Perfect for: → React developers wanting to learn Next.js → Frontend devs transitioning to full-stack → Anyone building production-ready web apps → Developers preparing for interviews 🎁 100% FREE - No email required, no catch! 📥 Download the PDF attached to this post and start your Next.js journey today! 𝗦𝗵𝗮𝗿𝗲 𝘁𝗵𝗶𝘀 𝘄𝗶𝘁𝗵 𝘀𝗼𝗺𝗲𝗼𝗻𝗲 𝘄𝗵𝗼'𝘀 𝗹𝗲𝗮𝗿𝗻𝗶𝗻𝗴 𝗡𝗲𝘅𝘁.𝗷𝘀 - 𝗶𝘁 𝗺𝗶𝗴𝗵𝘁 𝗯𝗲 𝗲𝘅𝗮𝗰𝘁𝗹𝘆 𝘄𝗵𝗮𝘁 𝘁𝗵𝗲𝘆 𝗻𝗲𝗲𝗱!⚡️ 𝗣𝗦: 𝗕𝗲𝗰𝗮𝘂𝘀𝗲 𝗼𝗳 𝘁𝗵𝗲 𝗟𝗶𝗻𝗸𝗲𝗱𝗜𝗻 𝘂𝗽𝗹𝗼𝗮𝗱 𝗹𝗶𝗺𝗶𝘁, only able to upload 100 pages of PDF with this post. Link to access the complete PDF is in the comment. 𝘍𝘰𝘳 𝘮𝘰𝘳𝘦 𝘴𝘶𝘤𝘩 𝘶𝘴𝘦𝘧𝘶𝘭 𝘤𝘰𝘯𝘵𝘦𝘯𝘵, 𝘥𝘰𝘯'𝘵 𝘧𝘰𝘳𝘨𝘦𝘵 𝘵𝘰 𝘧𝘰𝘭𝘭𝘰𝘸 𝘮𝘦. #javascript #reactjs #nextjs #webdevelopment

🚀 React Performance Tip: React.memo vs useMemo (Simple Explanation) Many React developers confuse React.memo and useMemo — but they solve different performance problems. 👉 React.memo Prevents unnecessary component re-renders Best for child components If props don’t change, component won’t re-render 👉 useMemo Prevents expensive recalculations Caches a computed value Re-calculates only when dependencies change 💡 Think like this: React.memo = remembers the component useMemo = remembers the calculation 📌 Using them correctly can significantly improve app performance, especially in large React applications. Are you using memoization wisely in your projects? 👇 Let’s discuss in comments. #ReactJS #FrontendDevelopment #JavaScript #PerformanceOptimization #ReactHooks #InterviewPrep