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React useEffect not triggering on state change despite dependency array being set correctly

👀 Views: 49 đŸ’Ŧ Answers: 1 📅 Created: 2025-08-28
React useEffect hooks JavaScript

I've tried everything I can think of but I'm experiencing an scenario where my `useEffect` hook in React is not triggering when I change a state variable, even though I've set the dependency array correctly... I'm using React version 17.0.2 and my component looks like this: ```javascript import React, { useEffect, useState } from 'react'; const MyComponent = () => { const [count, setCount] = useState(0); const [data, setData] = useState([]); useEffect(() => { console.log('Count has changed to:', count); // Simulating an API call based on count fetch(`https://api.example.com/data?count=${count}`) .then(response => response.json()) .then(json => setData(json)); }, [count]); // count is in the dependency array const incrementCount = () => { setCount(prevCount => prevCount + 1); }; return ( <div> <button onClick={incrementCount}>Increment Count</button> <p>Current Count: {count}</p> <div>Data: {JSON.stringify(data)}</div> </div> ); }; export default MyComponent; ``` When I click the button to increment the count, I see that the console does not log the expected output, and the data fetched depends on the previous state of `count`. I've checked that `count` is indeed updating by adding a console log immediately after `setCount`, and it shows the updated value. I've also tried removing the dependency array altogether, and then the `useEffect` runs on every render, which isn't the behavior I want. I've looked through the documentation and couldn't find anything that suggests a reason for this behavior. Is there something I'm missing, or could this be a bug with React? Any insights would be appreciated! My team is using Javascript for this service. What would be the recommended way to handle this? Any pointers in the right direction?