Understanding the useMemo Design
Learn about the fundamental concept of the useMemo hook in React, a powerful tool designed to optimize value assignments within function components.
Introduction to the useMemo hook
React adds a useMemo hook that allows us to reuse the previous assignment in an update.
React provides a useMemo hook to support a value assignment through a function that can either return a new value or an old value from the previous update:
const Title = () => {const label = useMemo(() => {return "Hello World"}, [])}
Using useMemo to memoize the constant label "Hello World"
The useMemo workflow summary
Let's understand this from a higher level, the following diagram outlines ...