DocumentType

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

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The DocumentType interface represents a Node containing a doctype.

Instance properties

Inherits properties from its parent, Node.

DocumentType.name Read only: The type of the document. It is always "html" for HTML documents, but will vary for XML documents.
DocumentType.publicId Read only: A string with an identifier of the type of document. Empty if the doctype given specifies no public ID.
DocumentType.systemId Read only: A string containing the URL to the associated DTD. Empty if the doctype given specifies no system ID.

Instance methods

Inherits methods from its parent, Node.

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

Specifications

Specification
DOM # interface-documenttype

Browser compatibility

See also

The DOM interfaces index.
DOMImplementation.createDocumentType() to create a new DocumentType node.