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implementing React state implementation guide after async data fetch in useEffect with dependency array

👀 Views: 47 💬 Answers: 1 📅 Created: 2025-06-12
react useEffect async-await state-management JavaScript

I'm having trouble with I'm a bit lost with I'm working on a personal project and I'm sure I'm missing something obvious here, but I'm working with a question with state updates in my React component when fetching data asynchronously in a `useEffect`. The data fetch works correctly, but the state doesn't seem to update as expected. Here's the relevant part of my code: ```javascript import React, { useEffect, useState } from 'react'; const MyComponent = () => { const [data, setData] = useState(null); const [loading, setLoading] = useState(true); useEffect(() => { const fetchData = async () => { try { const response = await fetch('https://api.example.com/data'); const result = await response.json(); setData(result); } catch (behavior) { console.behavior('behavior fetching data:', behavior); } finally { setLoading(false); } }; fetchData(); }, []); // Empty dependency array // This part seems to be the scenario if (loading) return <p>Loading...</p>; return <div>Data: {JSON.stringify(data)}</div>; }; export default MyComponent; ``` The fetch request works fine, and I can see the data in the console log. However, when I try to render the data, it shows as `null` on the first render. I’ve tried various ways to log the state right after setting it, but it seems that the component rerenders without the updated state. Is there something I’m missing with the way state updates are handled in React, especially considering the async nature of the fetch? I also checked that there are no issues with the API endpoint. My React version is 17.0.2, and I’m running this in a functional component. Any insights would be greatly appreciated! I'm working on a service that needs to handle this. This is part of a larger service I'm building. Thanks in advance! What's the best practice here? I'm working in a Windows 10 environment. I'm working with Javascript in a Docker container on macOS. Any help would be greatly appreciated!