React.memo is a higher order component. If your component renders the same result given the same props, you can wrap it in React.memo for a performance boost by memoizing the result.
React Performance and React.memo
Prevent unnecessary component re-renders using pure component memoization.
Key Takeaways: React Performance and React.memo
Mastering React Performance and React.memo helps you write clean and reliable React code. Follow standard conventions, test edge cases, and keep logic simple. Try running the code example below and complete the exercises to build confidence.
React Performance and React.memo Code Example
Reactimport React from "react";
const UserCard = React.memo(function UserCard({ name, role }) {
console.log("Rendered UserCard");
return <div>{name} ({role})</div>;
});Output
Skips re-renders when props remain unchanged
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