DocumentType

In This Article

The DocumentType interface represents a Node containing a doctype.

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Properties

Inherits properties from its parent, Node, and implements the ChildNode interface.

DocumentType.entities Read only: A NamedNodeMap of entities declared in the DTD. Every node in this map implements the Entity interface.
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. Every node in this map implements the Notation interface.
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.

Methods

Inherits methods from its parent, Node, and implements the ChildNode interface.

ChildNode.remove(): Removes the object from its parent children list.

Specifications

Specification	Status	Comment
DOM The definition of 'DocumentType' in that specification.	Living Standard	Added implemention of the `ChildNode` interface. Removed the `internalSubset`, `entities`, and `notation` properties.
Document Object Model (DOM) Level 3 Core Specification The definition of 'DocumentType' in that specification.	Recommendation	No change from Document Object Model (DOM) Level 2 Core Specification.
Document Object Model (DOM) Level 2 Core Specification The definition of 'DocumentType' in that specification.	Recommendation	Added the `publicID`, `systemID`, and `internalSubset` properties.
Document Object Model (DOM) Level 1 Specification The definition of 'DocumentType' in that specification.	Recommendation	Initial definition

Feature	Chrome	Edge	Firefox (Gecko)	Internet Explorer	Opera	Safari
Basic support	1.0	(Yes)	1.0 (1.7 or earlier)	(Yes)	(Yes)	(Yes)
`entities` and `notations`	1.0^[1]	(Yes)^[3]	1.0 (1.7 or earlier) No support6.0 (6.0)	(Yes)^[3]	(Yes)^[1]	(Yes)
`internalSubset`	?	(Yes)	No support (not anymore in any case)	(Yes)	?	?
Implements `ChildNode`	29.0	(Yes)	25.0 (25.0)^[2]	No support	16.0	No support

Feature	Android	Edge	Firefox Mobile (Gecko)	IE Mobile	Opera Mobile	Safari Mobile
Basic support	(Yes)	(Yes)	1.0 (1.0)	(Yes)	(Yes)	(Yes)
`entities` and `notations`	(Yes)^[1]	(Yes)	1.0 (1.0) No support6.0 (6.0)	?	(Yes)	(Yes)
`internalSubset`	?	?	?	?	?	?
Implements `ChildNode`	(Yes)	(Yes)	25.0 (25.0)^[2]	No support	16.0	No support

[1] The Chromium project plans to drop supports for the internalSubset, entities and notations methods.

[2] Firefox 25 also added the previousElementSibling and nextElementSibling properties, this was removed in Firefox 28 due to compatibility problems.

[3] entities and notations properties exist in IE and Edge, but seem to always be null?

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Contributors to this page: stevenwdv, arronei, erikadoyle, fscholz, Sebastianz, teoli, ethertank, Sheppy, Brettz9, samuelkato

Last updated by: stevenwdv, Jun 5, 2017, 1:39:02 PM