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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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