Document.doctype

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  1. Syntax
  2. Example
  3. Notes
  4. Specifications
  5.  Browser compatibility

Returns the Document Type Declaration (DTD) associated with current document. The returned object implements the DocumentType interface. Use DOMImplementation.createDocumentType() to create a DocumentType.

Syntax

doctype = document.doctype;
  • doctype is a read-only property.

Example

var doctypeObj = document.doctype;

console.log(
  "doctypeObj.name: "           + doctypeObj.name            + "\n" +
  "doctypeObj.internalSubset: " + doctypeObj.internalSubset  + "\n" +
  "doctypeObj.publicId: "       + doctypeObj.publicId        + "\n" +
  "doctypeObj.systemId: "       + doctypeObj.systemId
);

Notes

The property returns null if there is no DTD associated with the current document.

DOM level 2 doesn't support editing the document type declaration.

Specifications

Specification Status Comment
Document Object Model (DOM) Level 3 Core Specification
The definition of 'Document.doctype' in that specification.		 Obsolete Changed return value for HTML documents with absent <html> element. Defines that the document type can be changed.
Document Object Model (DOM) Level 2 Core Specification
The definition of 'Document.doctype' in that specification.		 Obsolete Initial definition

 Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support Yes ? Yes ? ? ?
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support Yes Yes ? Yes ? ? ?

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Contributors to this page: fscholz, teoli, Sebastianz, kosvrouvas, kscarfone, namolmes, nehasharma, Sheppy, ethertank, ziyunfei, Brettz9, George3, Ptak82, Nickolay, Mikekloster, Dria, JesseW
Last updated by: fscholz,