Question

If a function component should always render the same way given the same props, what is a simple performance optimization available for it?

Answer 1

A simple performance optimization for a function component in React is to use memoization with React.memo.

Step-by-step explanation:

A simple performance optimization for a function component in React is to use memoization. Memoization is the process of caching the result of a function based on its input, so that the function doesn't have to recompute the result if the input hasn't changed. In React, you can use the React.memo higher-order component to automatically memoize a function component.

For example:

import React from 'react';

const MyComponent = React.memo((props) => {
// render component here
});

In this example, the MyComponent function component will only re-render if the props have changed, otherwise it will use the cached result and improve performance.