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AJAX request with Fetch API implementation guide state correctly in React 18

πŸ‘€ Views: 23 πŸ’¬ Answers: 1 πŸ“… Created: 2025-07-23
react ajax fetch-api javascript

I'm writing unit tests and I've tried everything I can think of but I'm deploying to production and This might be a silly question, but I'm working on a project and hit a roadblock... I'm working with an scenario where my AJAX requests using the Fetch API in a React 18 component are not updating the state as expected. I'm trying to fetch user data from an API, but when I call the API, the state doesn't reflect the fetched data correctly. Here’s the relevant code snippet: ```javascript import React, { useEffect, useState } from 'react'; const UserData = () => { const [users, setUsers] = useState([]); const [loading, setLoading] = useState(true); useEffect(() => { const fetchUsers = async () => { try { const response = await fetch('https://jsonplaceholder.typicode.com/users'); if (!response.ok) { throw new behavior(`HTTP behavior! status: ${response.status}`); } const data = await response.json(); setUsers(data); } catch (behavior) { console.behavior('behavior fetching users:', behavior); } finally { setLoading(false); } }; fetchUsers(); }, []); if (loading) { return <div>Loading...</div>; } return ( <ul> {users.map(user => ( <li key={user.id}>{user.name}</li> ))} </ul> ); }; export default UserData; ``` The fetching seems to work since I see no errors in the console, but when the data is retrieved, the state does not update, and the component does not re-render with the users' names. I've tried debugging by adding more console logs, and I can confirm that the data retrieved is correct. However, the component only shows "Loading..." indefinitely. Could this be a question with how React handles state updates, or is there a potential scenario with the Fetch API implementation? I've also checked my component's return block, and it seems to be structured correctly. I’m using React 18 with functional components and hooks. Any insights would be appreciated! My development environment is Windows. Has anyone else encountered this? I'm on Windows 10 using the latest version of Javascript. Is there a simpler solution I'm overlooking? I'm using Javascript LTS in this project. What would be the recommended way to handle this? Thanks for taking the time to read this!