Revising React: use Effect Hook Notes & Examples

🚀 React Revision Series – Day 6 Today I revised the **use State Hook** in React and created well-structured notes along with practical examples. 📘 What’s included: ✅ Clear revision notes (PDF) ✅ Real-world use cases of use State ✅ Beginner-friendly explanations 📄 Notes (PDF) –https://lnkd.in/dZ5GsSxe Revising React step by step to build a strong foundation. If you’re also learning React, let’s grow together 🤝 #ReactJS #useState #ReactHooks #ReactRevision #FrontendDevelopment #JavaScript #LearningInPublic

React gives us powerful optimization tools… But many devs use them randomly. Here’s the simple rule: 🟠 useEffect → for side effects (API calls, subscriptions, DOM work) 🔵 useMemo → to memoize computed values 🟢 useCallback → to memoize functions If you use useEffect for calculations… you’re misusing it. If you pass new functions every render… you cause re-renders. The goal is NOT to use all 3 hooks. The goal is to use the right hook for the right job. Which one confused you the most when learning React? 👇 #ReactJS #FrontendDeveloper #WebDevelopment #JavaScript #CodingTips #ReactHooks #MERNStack #SoftwareDevelopment

🚀 React Revision Series – Day 7 Today I revised the **React Route** in React and created well-structured notes along with practical examples. 📘 What’s included: ✅ Clear revision notes (PDF) ✅ Real-world use cases of React Route ✅ Beginner-friendly explanations 📄 Notes (PDF) –https://lnkd.in/dc8V2jje #ReactJS #ReactRoute #ReactHooks #ReactRevision #FrontendDevelopment #JavaScript #LearningInPublic

Here is something new for react developers... I kept seeing the same pattern: useState works, useEffect works, but the mental model is missing. So I built #HooksHub a simple place for developers who are learning React and want to understand hooks properly, not just memorize syntax. It’s still evolving, but the goal is clear: explain hooks the way developers actually think. Read here: https://lnkd.in/g683-9Wu Which hook gave you the most trouble at first? #ReactJS #ReactHooks #FrontendDevelopment #JavaScript #WebDevelopment #Developers #BuildInPublic #LearnReact

I recently wrote a short blog explaining a common confusion many beginners (including me) face 👇 Why does push() work in JavaScript but React prefers the spread operator? I’ve explained it in a very simple way, using an easy toy-box analogy, so it’s beginner friendly and practical. 🔗 Read the blog here: https://lnkd.in/dT5y-gZf If you’re learning React or revising fundamentals, this might help 😊 Would love to hear your thoughts! #ReactJS #JavaScript #FrontendDevelopment #LearningInPublic #WebDevelopment

DAY 5 OF POSTING REACT CONTENT ⚛️ While learning React, one thing becomes very clear: 👉 understanding var, let, and const is not optional. So I made one simple table to memorize the differences easily — no searching, no confusion, all in one place. This helped me understand: why var is avoided when let actually makes sense why const is the default choice in React 💬 Save this if it helps you. Feel free to correct me or add anything I missed in the comments. #ReactJS #JavaScript #FrontendDevelopment #LearnInPublic #WebDevelopment #CodingJourney #SoftwareEngineering

🚀 React.js Cheat Sheet – Save This 🔖 follow : Lokesh hans Lokesh Hans A quick reference covering the most-used React concepts: components, props, state, hooks, rendering & structure. Perfect for beginners and a fast refresher for developers. 👉 #ReactJS #FrontendDeveloper #JavaScript #WebDevelopment #CodingTips

DAY 17 OF POSTING REACT CONTENT ⚛️ HOW DOES REACT USE CODE FROM ONE FILE IN ANOTHER? 🤔 In React, each component usually lives in its own file. To use a component somewhere else, JavaScript provides two simple tools: 👉 export — to make something available 👉 import — to use it in another file This keeps code: organized reusable easy to manage React doesn’t work without this. Every component connection starts here. #ReactJS #JavaScript #ReactBasics #FrontendDevelopment #LearnInPublic #WebDevelopment #CodingJourney

🚀 React Revision Series – Day 10 Today I revised the **Props** in React and created well-structured notes along with practical examples. 📘 What’s included: ✅ Clear revision notes (PDF) ✅ Real-world use cases of Props ✅ Beginner-friendly explanations 📄 Notes (PDF) –https://lnkd.in/d93GdpJD #ReactJS #FormHandling #ReactRevision #FrontendDevelopment #JavaScript #LearningInPublic

🚫 Stop using querySelector in React! In React, you shouldn’t manipulate the DOM like we do in plain JavaScript (querySelector, getElementById, etc.). Why? Because React uses a Virtual DOM and manages the real DOM for you. Direct DOM manipulation can lead to bugs and unexpected behavior. ✅ The right approach: useRef useRef gives you safe and direct access to a DOM element while staying aligned with React’s lifecycle. ✨ Benefits: Cleaner code Predictable components Easier maintenance Think in React way, not JavaScript way 😉 #React #JavaScript #WebDevelopment #Frontend #CleanCode #ReactHooks #Learning