20 lines
511 B
TypeScript
20 lines
511 B
TypeScript
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import { useEffect } from "react";
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export function useKonamiCode(cb: Function) {
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const KONAMI_CODE = [38, 38, 40, 40, 37, 39, 37, 39, 66, 65];
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let cursor = 0;
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useEffect(()=> {
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const onKeyDown = (e) => {
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cursor = (e.keyCode == KONAMI_CODE[cursor]) ? cursor + 1 : 0;
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if (cursor == KONAMI_CODE.length) {
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cb();
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cursor = 0;
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}
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};
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document.addEventListener('keydown', onKeyDown);
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return () => document.removeEventListener('keydown', onKeyDown);
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}, []);
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}
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