👀 Views: 77 💬 Answers: 1 📅 Created: 2025-06-22

reactjs useeffect event-listeners javascript

I need some guidance on I'm reviewing some code and I'm working with a question with my React 18 application where I have multiple event listeners added in a `useEffect` hook, but the cleanup function is not functioning as expected... I've tried adding a cleanup function to remove event listeners, but it seems like they are still firing even after the component unmounts. Here's a simplified version of my code: ```javascript import React, { useEffect } from 'react'; const MyComponent = () => { const handleScroll = () => { console.log('Scrolling'); }; const handleResize = () => { console.log('Resizing'); }; useEffect(() => { window.addEventListener('scroll', handleScroll); window.addEventListener('resize', handleResize); return () => { window.removeEventListener('scroll', handleScroll); window.removeEventListener('resize', handleResize); }; }, []); return <div>Check the console while scrolling or resizing!</div>; }; export default MyComponent; ``` When I navigate away from this component, I expect the event listeners to be removed, but I still see logs in the console from the event handlers. I suspect it could be related to how the cleanup function is executed, but I am not sure what I might be doing wrong. I've confirmed that the component is indeed unmounting, as I see other lifecycle logs indicating so. Any insights into why the cleanup function doesn't seem to be working would be greatly appreciated! I'm working on a CLI tool that needs to handle this. Any help would be greatly appreciated! I've been using Javascript for about a year now. This is happening in both development and production on Debian. Thanks for your help in advance!