React.js v19 Tutorials in Hindi - 2025 - #74: useCallback Hook in React in Hindi

5.0 (1)

12 learners

What you'll learn

This course includes

44.3 hours of video
Certificate of completion
Access on mobile and TV

Summary

Keywords

useCallback hook React React 19 performance optimization useCallback vs useMemo React.memo usage prevent React re-renders memoize React functions React hooks tutorial optimize React components useCallback example React child component re-renders React useCallback explained coding with React 19

Full Transcript

In this video, we explore the useCallback hook in React 19, a crucial tool for preventing unnecessary re-renders in your components. We'll guide you through understanding the common issues that arise in React applications and demonstrate how to effectively use the useCallback hook to optimize performance. Through real-life coding examples, you'll learn when and why to use useCallback, how to memoize functions, and the advantages it brings when combined with React.memo and useMemo. This tutorial is essential for anyone looking to write more efficient and performant React code. 💸 Get All My YouTube Videos' Source Code for just ₹199! Grab Now - https://thapatechnical.shop/source-code 🔥 Access React Course Source Code, PPT & Notes here for Free : https://github.com/thapatechnical/react-19-series-thapa-technical 📺 Discover React.js History in Just 10 Minutes - https://youtu.be/MiK2bFqhg1U 📺 Watch the complete Playlist here : https://www.youtube.com/playlist?list=PLwGdqUZWnOp1Rab71vx2zMF6qpwGDB2Z1 ------------------------------------------------------------------------ 🚀 Boost Your Skills with these Pre-Requisite Videos: 🔗 Best HTML Course - https://youtu.be/5ccq_nLHneE 🔗 Best CSS Course - https://youtu.be/MSICFljRcb4 🔗 JavaScript Basics Course Part 1 - https://youtu.be/13gLB6hDHR8 🔗 JavaScript Advanced Course Part 2 - https://youtu.be/YwsOCN8woA8 ------------------------------------------------------------------------ 💸 Build Your Own E-commerce Website for Free! - https://www.thapatechnical.com/2024/03/build-complete-ecommerce-website-using.html ------------------------------------------------------------------------ ✌️ Join Us! 🚀 Become a Member: Unlock perks, free source code, and more Join Now : https://www.youtube.com/channel/UCwfaAHy4zQUb2APNOGXUCCA/join 📷 Connect on Instagram: https://www.instagram.com/thapatechnical 🗨️ Join Our Discord Server: Hang out with fellow programmers Discord Link: https://discord.gg/MdScmCsua6 ------------------------------------------------------------------------ ⌛TIMELINE⏳ 0:00 Introduction to useCallback Hook in React 19 0:20 Understanding the Application & Problem 1:30 Analyzing the Code We've Written 4:50 How to Stop Child Component Re-Renders 6:05 When & Why to Use the useCallback Hook 8:40 Memoizing the Increment Function with useCallback 10:15 Memoizing the Decrement Function with useCallback 13:25 Demonstrating useCallback Advantages in Profiler Dev Tools 14:20 Comparing useMemo vs useCallback vs React.memo