Created
November 29, 2022 22:18
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A hook to debounce input data
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| import { useEffect, useState } from 'react'; | |
| export default function useDebounce<T>(value: T, delay: number): T { | |
| // State and setters for debounced value | |
| const [debouncedValue, setDebouncedValue] = useState<T>(value); | |
| useEffect( | |
| () => { | |
| // Update debounced value after delay | |
| const handler = setTimeout(() => { | |
| setDebouncedValue(value); | |
| }, delay); | |
| // Cancel the timeout if value changes (also on delay change or unmount) | |
| // This is how we prevent debounced value from updating if value is changed ... | |
| // .. within the delay period. Timeout gets cleared and restarted. | |
| return () => { | |
| clearTimeout(handler); | |
| }; | |
| }, | |
| [value, delay] // Only re-call effect if value or delay changes | |
| ); | |
| return debouncedValue; | |
| } |
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