JAVASCRIPT

Implement a useDebounce Hook for Input Values

Learn how to create a custom React useDebounce hook to delay state updates, perfect for optimizing search inputs or filtering data to reduce API calls and improve performance.

import { useState, useEffect } from 'react';

function useDebounce(value, delay) {
  const [debouncedValue, setDebouncedValue] = useState(value);

  useEffect(() => {
    const handler = setTimeout(() => {
      setDebouncedValue(value);
    }, delay);

    return () => {
      clearTimeout(handler);
    };
  }, [value, delay]);

  return debouncedValue;
}
How it works: This `useDebounce` hook delays updating a value until a specified `delay` has passed without any new updates to the original `value`. It's ideal for optimizing performance in search bars, text inputs, or filters, preventing excessive re-renders or API calls by only reacting once the user has paused typing, leading to a smoother user experience.

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