React Custom Hooks: Mastering useDebounce and useThrottle for Cleaner UX

# Why Debounce Matters

Firing an API request on every keystroke in a search input hammers the server and creates UI flicker. Debouncing fixes this by waiting until typing pauses.

Building useDebounce

import { useState, useEffect } from 'react';

export function useDebounce<T>(value: T, delay: number = 300): T { const [debouncedValue, setDebouncedValue] = useState<T>(value);

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

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

return debouncedValue; } ```

Hooking It Up

Now search queries only hit the network after the user stops typing for 300ms, keeping both backend loads and client renders low.