document.write()The document.open(), document.write(), document.writeln(), and document.close() methods write content to a document, possibly while that document is still loading.limitedhttps://html.spec.whatwg.org/multipage/dynamic-markup-insertion.htmlhttps://developer.mozilla.org/docs/Web/API/Document/openapi.Document.closeapi.Document.openapi.Document.writeapi.Document.write.enforces_trusted_typesapi.Document.writelnapi.Document.writeln.enforces_trusted_typeshttps://nowyoucanuse.com/features--document-write.html