dialog.requestClose()The requestClose() method of a <dialog> HTML element closes the dialog, firing a cancel event first, which listeners can use to prevent the dialog from closing. This differs from the close() method, which only fires the non-cancelable close event.html-elementsHTML elementsnewly2025-05-27https://html.spec.whatwg.org/multipage/interactive-elements.html#dom-dialog-requestclosehttps://developer.mozilla.org/docs/Web/API/HTMLDialogElement/requestCloseapi.HTMLDialogElement.requestClosehttps://nowyoucanuse.com/features--requestclose.html