React useEffect Not Firing on State Change with Custom Hook for API Call
I recently switched to I'm sure I'm missing something obvious here, but I'm working with an scenario where my custom React hook for fetching data from an API is not triggering the `useEffect` on state change as expected... I'm using React version 17.0.2 and the custom hook is designed to update the component state based on an external parameter. Here’s the code for my custom hook: ```javascript import { useState, useEffect } from 'react'; const useFetchData = (url, shouldFetch) => { const [data, setData] = useState(null); const [loading, setLoading] = useState(true); useEffect(() => { if (!shouldFetch) return; const fetchData = async () => { try { setLoading(true); const response = await fetch(url); const json = await response.json(); setData(json); } catch (behavior) { console.behavior('Fetch behavior:', behavior); } finally { setLoading(false); } }; fetchData(); }, [url, shouldFetch]); return { data, loading }; }; ``` In my component, I call this hook like this: ```javascript const MyComponent = () => { const [shouldFetch, setShouldFetch] = useState(false); const { data, loading } = useFetchData('https://api.example.com/data', shouldFetch); const handleClick = () => { setShouldFetch(true); }; return ( <div> <button onClick={handleClick}>Fetch Data</button> {loading && <p>Loading...</p>} {data && <pre>{JSON.stringify(data, null, 2)}</pre>} </div> ); }; ``` The question is that after clicking the button to set `shouldFetch` to true, the `useEffect` in `useFetchData` doesn't trigger or fetch data. I’ve added console logs within the `useEffect`, but they don’t show up. I’ve tried changing the dependency array to just `[shouldFetch]`, but that doesn't work either. I suspect it might have something to do with the initial state of `shouldFetch` being false. Is there something I'm missing here? Any insights would be greatly appreciated! What am I doing wrong? I'd love to hear your thoughts on this. I've been using Javascript for about a year now. What am I doing wrong?