Baseline Widely available
The read-only systemId
property of the DocumentType
returns the URL of the associated DTD.
For synthetic DocumentType
, this property reflects the value given in parameter to DOMImplementation.createDocumentType()
.
A string.
Examplesconst docType = document.implementation.createDocumentType(
"svg",
"",
"http://www.w3.org/2000/svg",
);
console.log(docType.systemId); // Displays "http://www.w3.org/2000/svg"
Specifications Browser compatibility
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HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4