This code snippet demonstrates how to optimize React performance by utilizing memoization and callbacks, which is particularly useful when dealing wit...
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JavaScript
JavaScript
JavaScript
Optimizing React Performance With Memo And UseCallback Hooks
This React snippet demonstrates optimization techniques using memo and useCallback hooks, ideal for complex components with frequent re-renders. It showcases a real-world scenario where these hooks improve application performance, requiring a good understanding of React hooks. The example highlights the benefits of memoization and callback optimization. For best results, ensure a solid grasp of React fundamentals.
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27
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1 min
import React, { useState, useMemo, useCallback } from 'react';
const OptimizedComponent = (props) => {
const [count, setCount] = useState(0);
const expensiveComputation = useMemo(() => {
let result = 0;
for (let i = 0; i < 10000000; i++) {
result += i;
}
return result;
}, []);
const handleIncrement = useCallback(() => {
setCount(count + 1);
}, [count]);
return (
<div>
<p>Count: {count}</p>
<button onClick={handleIncrement}>Increment</button>
<p>Expensive Computation Result: {expensiveComputation}</p>
</div>
);
};
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