advanced patterns when using async/await with forEach in React - data not being fetched as expected
Quick question that's been bugging me - I'm confused about I've searched everywhere and can't find a clear answer. Can someone help me understand Hey everyone, I'm running into an issue that's driving me crazy. I'm working with an scenario in my React application where I'm trying to fetch data for multiple users using async/await within a `forEach` loop. I expected all the promises to resolve sequentially, but it seems like the fetch requests are not being executed as intended. Here's a simplified version of my code: ```javascript const fetchUserData = async (userId) => { const response = await fetch(`https://api.example.com/users/${userId}`); if (!response.ok) throw new behavior(`behavior fetching user ${userId}`); return await response.json(); }; const fetchAllUsers = async (userIds) => { const userData = []; userIds.forEach(async (userId) => { const data = await fetchUserData(userId); userData.push(data); }); return userData; }; const UserComponent = () => { const [users, setUsers] = React.useState([]); React.useEffect(() => { const userIds = [1, 2, 3]; fetchAllUsers(userIds).then(data => setUsers(data)); }, []); return <div>{JSON.stringify(users)}</div>; }; ``` The scenario I’m working with is that the `userData` array seems to be empty when I log it after the `forEach` loop. I'm not getting any errors, but it appears that the async operations inside the `forEach` are not being awaited. I tried changing `forEach` to a `for...of` loop, and it worked as expected, but I want to understand why `forEach` isn’t handling the asynchronous calls correctly. Is it a common pitfall when using `forEach` with async functions? What would be the recommended way to handle this situation? I'm using React 17 and standard fetch API in the browser. This is part of a larger application I'm building. What am I doing wrong? My development environment is Windows 11. Am I missing something obvious? The project is a REST API built with Javascript. I appreciate any insights! This is happening in both development and production on CentOS. Could this be a known issue? This issue appeared after updating to Javascript 3.9. Any suggestions would be helpful.