Javascript Programming Tutorials, Guides & Best Practices
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Tutorial
Mastering React Rendering Performance with Memoization and Context
import React, { useState, useCallback } from 'react';
function Counter() {
const [count, setCount] = useState(0);
const increment = useCallback(() => setCount(c => c + 1), []);
const decrement = useCallback(() => setCount(c => c - 1), []);
return (
<div>
<button onClick={increment}>+</button>
<span>{count}</span>
<button onClick={decrement}>-</button>
</div>
);
}By wrapping increment and decrement with useCallback, their references remain stable across renders, preventing unnecessary re-renders in child components that receive these functions as props.([GeeksforGeeks][2])
May 03, 2025
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