Скачать или смотреть React class 4 | useCallback | Role of Heap Memory

🎥 React Class 4 | useCallback, Heap vs Stack, Closures & Browser Memory Explained

In React Class 4, we dive deep into how React works internally and clear some of the most confusing concepts for beginners.

This class explains useCallback, JavaScript Heap & Stack memory, and how the browser’s JavaScript engine creates and stores functions during component re-renders.
We also cover closures, stale state issues, and why React applications still work even without useCallback.

This session is especially useful if you:

Get confused about function recreation in React

Don’t know when to use useCallback

Want to understand React performance optimization

Are preparing for frontend interviews

By the end of this class, you’ll have a clear mental model of React rendering, memory management, and performance best practices.

📌 Topics Covered

What is useCallback and why we use it

Function recreation in React

JavaScript Heap vs Stack memory

How browsers manage memory

Closures and stale state problems

When to use useCallback (real-world examples)

Common mistakes beginners make

🔔 Upcoming Classes

React Class 5: React.memo, useRef, and render optimization

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Drop your questions in the comments — we’ll cover them in the next class.

🔍 Hashtags
#ReactJS
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#FrontendDevelopment
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