Handling Edge Cases with Array Filtering in React State Updates
I've been researching this but I'm having a hard time understanding I need help solving I've been struggling with this for a few days now and could really use some help. I’m encountering an issue with filtering an array of objects in my React component's state when the component updates. I'm using React 17 and functional components with hooks. The goal is to filter an array of user objects based on their active status, but I notice that the filtered results are not updating correctly. Here’s a simplified version of my code: ```javascript const App = () => { const [users, setUsers] = useState([ { id: 1, name: 'Alice', active: true }, { id: 2, name: 'Bob', active: false }, { id: 3, name: 'Charlie', active: true }, ]); const handleToggleActive = (id) => { setUsers((prevUsers) => prevUsers.map((user) => user.id === id ? { ...user, active: !user.active } : user ) ); }; const activeUsers = users.filter(user => user.active); return ( <div> <h1>Active Users</h1> <ul> {activeUsers.map(user => ( <li key={user.id} onClick={() => handleToggleActive(user.id)}> {user.name} </li> ))} </ul> </div> ); }; ``` The component renders a list of active users correctly on the first load. However, when I click on a user to toggle their active status, the list does not update as expected. I noticed that the `activeUsers` variable still holds the previous state, despite the `setUsers` call being correct. I’ve tried placing the filtering logic directly inside the component body and even logging the `activeUsers` after the state update, but it seems the filter is still referencing stale state. I suspect this might have to do with how closures work in React hooks or possibly the asynchronous nature of the state updates. Does anyone have insights on how to ensure that the active users list reflects the latest state changes immediately after a toggle? My development environment is Windows. My team is using Javascript for this desktop app. Am I approaching this the right way? I recently upgraded to Javascript 3.9. Has anyone dealt with something similar?