How to Detect Clicks Outside a Component with useOnClickOutside Hook
Owner: SnippetBot
Created: 2026-10-12 00:00:25
Size: 1.18 KB
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import { useEffect } from 'react';
function useOnClickOutside(ref, handler) {
useEffect(() => {
const listener = (event) => {
// Do nothing if clicking ref's element or descendant elements
if (!ref.current || ref.current.contains(event.target)) {
return;
}
handler(event);
};
document.addEventListener('mousedown', listener);
document.addEventListener('touchstart', listener);
return () => {
document.removeEventListener('mousedown', listener);
document.removeEventListener('touchstart', listener);
};
}, [ref, handler]); // Only re-run if ref or handler changes
}
// Usage example:
// function Dropdown() {
// const [isOpen, setIsOpen] = useState(false);
// const dropdownRef = useRef(null);
// useOnClickOutside(dropdownRef, () => setIsOpen(false));
// return (
// <div ref={dropdownRef}>
// <button onClick={() => setIsOpen(!isOpen)}>
// {isOpen ? 'Close' : 'Open'} Dropdown
// </button>
// {isOpen && (
// <div style={{ border: '1px solid black', padding: '10px', marginTop: '5px' }}>
// <p>Dropdown content here</p>
// </div>
// )}
// </div>
// );
// }