custom-hook.md

Custom hook

Split UI from business logic

Moving the functionality into a function, we get a custom hook: CodeSandBox: Custom hook (JS)

Generalize custom hook

Generalize useFetch: Add error and re-invoke with setUrl function:

• Let's generalize the useFetch hook and allow new urls to be fetched with a function.

• CodeSandBox: Result (JS)

• Insight: setUrl is basically a doFetch.

• Question: Why does hook not refetch?