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React: scenarios 'Maximum update depth exceeded' when using useEffect with state updates in dependency array

👀 Views: 47 đŸ’Ŧ Answers: 1 📅 Created: 2025-06-13
react useeffect state-management javascript

I can't seem to get I've searched everywhere and can't find a clear answer... I've been banging my head against this for hours. I'm working with a 'Maximum update depth exceeded' behavior in my React app when using the `useEffect` hook. Here's the situation: I'm fetching some data from an API and updating the state based on that data. However, when I include the state variable that I'm updating in the dependency array of the `useEffect`, it causes an infinite loop. My setup looks like this: ```javascript import React, { useEffect, useState } from 'react'; const DataFetcher = () => { const [data, setData] = useState([]); const [page, setPage] = useState(1); useEffect(() => { const fetchData = async () => { const response = await fetch(`https://api.example.com/data?page=${page}`); const result = await response.json(); setData(result); }; fetchData(); }, [page]); // page is the dependency const loadMore = () => { setPage(prevPage => prevPage + 1); // incrementing page }; return ( <div> <ul>{data.map(item => <li key={item.id}>{item.name}</li>)}</ul> <button onClick={loadMore}>Load More</button> </div> ); }; export default DataFetcher; ``` When I click the 'Load More' button, it triggers a state update and re-runs the `useEffect`, but it seems to cause the infinite loop. I've tried using a functional update for `setPage`, but it doesn't seem to resolve the scenario. I also checked that the API endpoint is functioning correctly and returning paginated data. Any insights on how to break this loop while still updating the page state? I would appreciate detailed advice on how to handle this scenario without hitting the maximum update depth behavior. What am I doing wrong? I'm coming from a different tech stack and learning Javascript. Any ideas what could be causing this?