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November 7, 2024 05:53
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| import { useEffect, useRef, useState } from "react"; | |
| export function useEventListener<K extends keyof HTMLElementEventMap>( | |
| eventName: K, | |
| handler: (event: HTMLElementEventMap[K]) => void, | |
| element: HTMLElement | Window = window | |
| ) { | |
| const savedHandler = useRef<(event: HTMLElementEventMap[K]) => void>(); | |
| useEffect(() => savedHandler.current = handler, [handler]); | |
| useEffect(() => { | |
| if (!element || !element.addEventListener) return; | |
| const eventListener = (event: Event) => { | |
| if (savedHandler.current) | |
| savedHandler.current(event as HTMLElementEventMap[K]); | |
| }; | |
| element.addEventListener(eventName, eventListener); | |
| return () => { | |
| element.removeEventListener(eventName, eventListener); | |
| }; | |
| }, [eventName, element]); | |
| } |
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