DocumentType

The DocumentType interface represents a Node containing a doctype.

Properties

Inherits properties from its parent, Node.

DocumentType.internalSubset Read only: A DOMString of the internal subset, or null if there is none. Eg "<!ELEMENT foo (bar)>".
DocumentType.name Read only: A DOMString, eg "html" for <!DOCTYPE HTML>.
DocumentType.notations Read only: A NamedNodeMap with notations declared in the DTD.
DocumentType.publicId Read only: A DOMString, eg "-//W3C//DTD HTML 4.01//EN", empty string for HTML5.
DocumentType.systemId Read only: A DOMString, eg "http://www.w3.org/TR/html4/strict.dtd", empty string for HTML5.

Inherits methods from its parent, Node.

DocumentType.after(): Inserts a set of Node or DOMString objects in the children list of the DocumentType's parent, just after the DocumentType object.
DocumentType.before(): Inserts a set of Node or DOMString objects in the children list of the DocumentType's parent, just before the DocumentType object.
DocumentType.remove(): Removes the object from its parent children list.
DocumentType.replaceWith(): Replaces the document type with a set of given nodes.

Specification
DOM Standard (DOM) # interface-documenttype

BCD tables only load in the browser