👀 Views: 0 💬 Answers: 1 📅 Created: 2025-06-12

react useeffect lodash debounce javascript

Quick question that's been bugging me - I've hit a wall trying to I've encountered a strange issue with I'm having a hard time understanding After trying multiple solutions online, I still can't figure this out... I've looked through the documentation and I'm still confused about I'm facing an issue in my React application where I'm using a debounced input field, but the state updates seem to cause multiple re-renders unexpectedly. I'm using `useState` and `useEffect` hooks along with the `lodash.debounce` function to handle the input changes efficiently. However, when I type into the input field, it seems to trigger the effect more times than I expect. Here's a simplified version of my code: ```javascript import React, { useState, useEffect, useCallback } from 'react'; import debounce from 'lodash.debounce'; const DebouncedInput = () => { const [inputValue, setInputValue] = useState(''); const [displayValue, setDisplayValue] = useState(''); const debouncedSave = useCallback( debounce((value) => { setDisplayValue(value); }, 300), [] // This empty array is crucial for memoization ); useEffect(() => { debouncedSave(inputValue); // Cleanup function to cancel the debounce on unmount return () => { debouncedSave.cancel(); }; }, [inputValue, debouncedSave]); return ( <div> <input type="text" value={inputValue} onChange={(e) => setInputValue(e.target.value)} /> <p>Debounced Value: {displayValue}</p> </div> ); }; export default DebouncedInput; ``` I expect the `displayValue` to update only after the user has stopped typing for 300 milliseconds, but sometimes I see it update immediately or multiple times for a single input. I'm not sure if the issue lies in the way I'm using `debounce` or how the `useEffect` hook is handling the dependencies. I've also checked the version of lodash and React, and I'm using: - React: 17.0.2 - lodash: 4.17.21 Could this be related to how I'm debouncing the function, or is there something I'm missing in the `useEffect` cleanup? Any insights would be appreciated! My development environment is Windows. I'd really appreciate any guidance on this. This issue appeared after updating to Javascript LTS. What would be the recommended way to handle this? How would you solve this? Am I approaching this the right way? I'm on macOS using the latest version of Javascript. Any ideas how to fix this? I'm working on a service that needs to handle this. This is happening in both development and production on Windows 11. Any suggestions would be helpful.