React click outside to close
Registering click outside event (click-out) using references (useRef) and useEffect. The event is registered on body and added and removed when the component mounts/dismounts.
The example represents a dropdown menu with a click outside event to close it.
00:00 - Intro
00:16 - Button click event
01:36 - Click outside event
04:28 - useRef to make it perfect
05:31 - Test and outro
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