Learn React Hooks

The useCallback Hook

The useCallback Hook works similarly to the useMemo Hook. However, it returns a memoized callback function instead of a value:

const memoizedCallback = useCallback(    () => doSomething(a, b, c),    [a, b, c])

The previous code is similar to the following useMemo Hook:

const memoizedCallback = useMemo(    () => () => doSomething(a, b, c),    [a, b, c])

The function returned will only be redefined if one of the dependency values passed in the array of the second argument changes.