Handling state updates with useEffect in functional components leads to stale closures in React
I'm relatively new to this, so bear with me. I have a functional component using React 17.0.2, and I’m working with an scenario where state updates inside a `useEffect` hook are not reflecting the latest state. I have a piece of code that fetches data and updates the state when the component mounts, but subsequent updates are using stale state values. Here’s the relevant part of my code: ```javascript import React, { useEffect, useState } from 'react'; const MyComponent = () => { const [data, setData] = useState(null); const [counter, setCounter] = useState(0); useEffect(() => { const fetchData = async () => { const response = await fetch(`https://api.example.com/data?id=${counter}`); const result = await response.json(); setData(result); }; fetchData(); }, [counter]); // Here, counter is in the dependency array return ( <div> <p>Data: {data && JSON.stringify(data)}</p> <button onClick={() => setCounter(counter + 1)}>Fetch New Data</button> </div> ); }; ``` The scenario is that when I click the button to increment the counter, it seems that the `fetchData` function is fetching data based on the previous value of `counter`, rather than the updated one. I’ve tried using the functional form of `setCounter` to see if that would help, but the question continues. The console logs show that the value of `counter` inside `fetchData` is not the latest. I expected it to reflect the updated state when the effect runs after the button click. How can I ensure that the latest `counter` value is used in the `fetchData` function? Any guidance would be appreciated. What am I doing wrong?