DocumentType: publicId property

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 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().

Value

A string.

Examples

js
const docType = document.implementation.createDocumentType(
  "svg",
  "-//W3C//DTD SVG 1.1//EN",
  "https://www.w3.org/2000/svg",
);
console.log(docType.publicId); // Displays "-//W3C//DTD SVG 1.1//EN"

Specifications

Specification
DOM
# dom-documenttype-publicid

Browser compatibility