Javascript Programming Tutorials, Guides & Best Practices
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Memoization In React useMemo useCallback react performance optimization react.memo context api avoid re-renders react rendering optimize react components react context best practices reduce re-renders react slow app fix efficient state management react profiling react performance tips react optimization guide performance boost react unnecessary re-render react component memoization react slow ui fix
Tutorial
Mastering React Rendering Performance with Memoization and Context
For components that perform heavy computations, useMemo can cache the result of a calculation, recomputing it only when its dependencies change.([Content That Scales][5])
import React, { useState, useMemo } from 'react';
function ExpensiveComponent({ data }) {
const processedData = useMemo(() => {
// Expensive computation
return data.map(item => /* processing */ item);
}, [data]);
return <div>{/* render processedData */}</div>;
}May 03, 2025
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