The read-only publicId
property of the DocumentType
returns a formal identifier of the document.
For synthetic DocumentType
, this property reflects the value given in parameter to DOMImplementation.createDocumentType()
.
For HTML documents, browsers always set it up to html
, whatever the actual DOCTYPE
in the source code is. For SVG documents, for example, it can be "-//W3C//DTD SVG 1.1//EN"
.