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paulohfev/useOutsideClick.ts

Last active March 12, 2024 11:27
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useOutsideClick React Hook w/ TypeScript
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useOutsideClick.ts
import { useEffect } from 'react';
export const useOutsideClick = (callback: (T?: any) => void, ref: React.RefObject<HTMLDivElement>) => {
const handleClick = (e: Event) => {
if (ref.current && !ref.current.contains(<HTMLElement>e.target)) {
callback();
}
};
useEffect(() => {
document.addEventListener('click', handleClick);
return () => {
document.removeEventListener('click', handleClick);
};
});
};
@perepalacin
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Greetings! Thanks a lot for your code snippet! Nevertheless, I was having some troubles using the type for the e.target argument. I instead used e.target as HTMLElement and it worked, any ideas why is that? Thanks!!

export const useOutsideClick2 = (callback: (T?: any) => void, ref: React.RefObject<HTMLDivElement>) => {
  const handleClick = (e: Event) => {
    if (ref.current && !ref.current.contains(e.target as HTMLElement)) {
      callback();
    }
  };

  useEffect(() => {
    document.addEventListener('click', handleClick);

    return () => {
      document.removeEventListener('click', handleClick);
    };
  });
};

@paulohfev
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Author

Greetings. Most likely there was a typing conflict with the JSX syntax steeming from the original example. <HTMLElement>e.target and e.target as HTMLElement achieve the same goal, so there shouldn't be an issue! Thanks for pointing it out!

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