Jakub Andrzejewski’s Post

🚀 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

● Debounce vs Throttle in React JS ● # Debounce :- What it does:- Executes the function only after the user stops triggering the event for a specific time. Best use cases: Search box (API call after typing stops) Form validation Auto-save feature. # Throttle :- What it does:- Executes the function at regular intervals, even if the event keeps firing. Best use cases: Scroll events Window resize Button click protection (prevent multiple ). #ReactJS #JavaScript #WebDevelopment #Frontend

5 React Hooks that separate juniors from seniors ⚛️ Stop memorising. Start understanding. Swipe through and level up your React game 🚀 #React #WebDevelopment #Frontend #JavaScript #CodingTips

Understanding useCallback can save you from unnecessary re-renders and performance headaches in React ⚛️ If you’re passing functions as props, useCallback helps keep references stable and your components efficient. Small hook. Big impact. 🚀 #ReactJS #FrontendDevelopment #WebDevelopment #JavaScript #ReactHooks

🚀 React Revision Series – Day 9 Today I revised the **Form Handling** in React and created well-structured notes along with practical examples. 📘 What’s included: ✅ Clear revision notes (PDF) ✅ Real-world use cases of Form Handling ✅ Beginner-friendly explanations 📄 Notes (PDF) –https://lnkd.in/dRN3Ab-g #ReactJS #FormHandling #ReactRevision #FrontendDevelopment #JavaScript #LearningInPublic

🚀 React Revision Series – Day 8 Today I revised the **Condition Rendering** in React and created well-structured notes along with practical examples. 📘 What’s included: ✅ Clear revision notes (PDF) ✅ Real-world use cases of Condition Rendering ✅ Beginner-friendly explanations 📄 Notes (PDF) –https://lnkd.in/dWHAfWu8 #ReactJS #ConditionRendering #ReactRevision #FrontendDevelopment #JavaScript #LearningInPublic

🚀 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

100 identical requests. 1 expensive DB call! I wrote about request collapsing and how to implement it in NestJS using an interceptor + decorator. https://lnkd.in/dJZK859c #javascript #nestjs #requestsandlimits