<dialog closedby>The closedby HTML attribute for <dialog> sets which user actions close a dialog. For example, closedby="any" allows the dialog to be closed by clicking outside of it.html-elementsHTML elementslimitedhttps://html.spec.whatwg.org/multipage/interactive-elements.html#attr-dialog-closedbyhttps://developer.mozilla.org/docs/Web/API/HTMLDialogElement/closedByapi.HTMLDialogElement.closedByhtml.elements.dialog.closedbyhttps://nowyoucanuse.com/features--dialog-closedby.html