Debouncing in the SearchInput Component
Overview: Debouncing is a technique that limits the rate at which a function is invoked, especially in cases like search input, where every keystroke could trigger an expensive operation such as an API call or a state update. In this solution, debouncing is applied to the search input field, ensuring that the search query is only processed after the user has stopped typing for a specified period, thus reducing unnecessary re-renders.
Implementation: The SearchInput
component is responsible for capturing user input. However, instead of immediately sending the input to the parent component or making API calls, we use a debouncing hook (useDebouncedValue
) to delay updates until the user stops typing for a set period (e.g., 800ms).
import React, { useState, useEffect, useCallback } from "react"; import { useDebouncedValue } from "../../services/hooks/useDebouncedValue"; function SearchInput({ initialQuery, onDebouncedQueryChange }) { const [searchQuery, setSearchQuery] = useState(initialQuery || ""); const debouncedQuery = useDebouncedValue(searchQuery, 800); useEffect(() => { onDebouncedQueryChange(debouncedQuery); }, [debouncedQuery, onDebouncedQueryChange]); const handleInputChange = useCallback((e) => { setSearchQuery(e.target.value); }, []); return ( <input type="text" value={searchQuery} onChange={handleInputChange} placeholder="Search..." /> ); }
This implementation ensures that the parent component (SearchPage
) receives the debounced query and only passes it to the child SearchList
when the user has stopped typing for a period, optimizing performance.
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