👀 Views: 69 💬 Answers: 1 📅 Created: 2025-06-03

react hooks useState useEffect JavaScript

I'm stuck on something that should probably be simple. I've been struggling with this for a few days now and could really use some help. I'm working on a personal project and I'm working with an scenario with my React component where a state update seems to trigger infinite re-renders. I'm using a functional update pattern with `useState`, but I need to seem to figure out why this is happening. Here's a snippet of my code: ```javascript import React, { useState, useEffect } from 'react'; const Counter = () => { const [count, setCount] = useState(0); useEffect(() => { const interval = setInterval(() => { setCount(prevCount => prevCount + 1); }, 1000); return () => clearInterval(interval); }, []); return <div>Count: {count}</div>; }; export default Counter; ``` The intention is to increment the count every second, but instead, it seems to be re-rendering endlessly. I've checked the console, and I'm not seeing any specific behavior messages, but the performance of the app degrades significantly. I tried using a simple state update without the functional approach: ```javascript setCount(count + 1); ``` However, this gives a similar result. I also ensured that there are no other components or hooks affecting this state. I’ve also tried using a cleanup function in the `useEffect`, but it doesn't seem to help. My React version is 17.0.2, and I’m running this in a simple Create React App setup. Has anyone encountered this, and what might be the root cause of this behavior? Any insights would be greatly appreciated! I'm working on a application that needs to handle this. How would you solve this? I'm coming from a different tech stack and learning Javascript. The project is a mobile app built with Javascript.