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scenarios with Debouncing Input Handlers in React Using Lodash

👀 Views: 13 đŸ’Ŧ Answers: 1 📅 Created: 2025-06-13
react lodash debouncing JavaScript

I've tried everything I can think of but I've tried everything I can think of but I can't seem to get I've searched everywhere and can't find a clear answer... I'm working with an scenario where the debounced input handler for my search feature in a React component isn't behaving as expected... I'm using lodash's `_.debounce` method to limit the frequency of API calls while the user types. However, the input state updates seem to lag behind, and I'm receiving outdated values in my API calls. Here's a simplified version of my code: ```javascript import React, { useState, useEffect, useCallback } from 'react'; import _ from 'lodash'; const SearchComponent = () => { const [query, setQuery] = useState(''); const debouncedSearch = useCallback( _.debounce((searchTerm) => { fetch(`https://api.example.com/search?q=${searchTerm}`) .then(response => response.json()) .then(data => { console.log(data); }); }, 300), [] ); const handleChange = (event) => { const { value } = event.target; setQuery(value); debouncedSearch(value); }; useEffect(() => { return () => { debouncedSearch.cancel(); }; }, [debouncedSearch]); return <input type="text" value={query} onChange={handleChange} />; }; export default SearchComponent; ``` I expected that the `debouncedSearch` function would call the API with the current input value after 300ms of inactivity. However, I noticed that the logged search term sometimes shows the previous input instead of the most recent one. This behavior is particularly frustrating when rapidly typing in the input field. I've tried moving the `debouncedSearch` function inside the `handleChange` but that didn't resolve the scenario. Additionally, I confirmed that lodash is properly imported and the component renders without any errors. Could anyone provide insights on why the latest input value isn't being used in the debounced function? Is there a better way to manage this with respect to React's state updates and closures? My development environment is Windows. This is part of a larger application I'm building. Any help would be greatly appreciated! For context: I'm using Javascript on Debian. Is there a better approach? I'm working on a application that needs to handle this. Hoping someone can shed some light on this. My development environment is CentOS. Could this be a known issue? Thanks in advance!