DOMImplementation: createDocumentType() method

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.

The DOMImplementation.createDocumentType() method returns a DocumentType object which can either be used with DOMImplementation.createDocument upon document creation or can be put into the document via methods like Node.insertBefore() or Node.replaceChild().

Syntax

createDocumentType(name, publicId, systemId)

Parameters

name: A string containing the name of the doctype, like html. Corresponds to the DocumentType.name property.
publicId: A string containing the PUBLIC identifier. Corresponds to the DocumentType.publicId property.
systemId: A string containing the SYSTEM identifiers. Corresponds to the DocumentType.systemId property.

Return value

A DocumentType.

Examples

const dt = document.implementation.createDocumentType(
  "svg",
  "-//W3C//DTD SVG 1.1//EN",
  "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd",
);
const d = document.implementation.createDocument(
  "http://www.w3.org/2000/svg",
  "svg:svg",
  dt,
);
console.log(d.doctype.publicId); // -//W3C//DTD SVG 1.1//EN