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",
  "http://www.w3.org/2000/svg",
);

console.log(docType.publicId); // Displays "-//W3C//DTD SVG 1.1//EN"

Specifications

Specification
DOM
# dom-documenttype-publicid

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
publicId

Legend

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Full support
Full support