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DOMImplementation.createDocumentType() - Web API | MDN

DOMImplementation.createDocumentType()

Baseline Widely available

DOMImplementation.createDocumentType() 方法返回一个 DocumentType 对象,它可以在文档创建时用在 DOMImplementation.createDocument ,或者通过Node.insertBefore() 或 Node.replaceChild() 等方法放在文档中。

语法
var doctype = document.implementation.createDocumentType(qualifiedNameStr, publicId, systemId);
参数
qualifiedNameStr

DOMString 类型的值,包含一个合规的名称,如 svg:svg。

publicId

DOMString 类型的值,包含 PUBLIC 标识符。

systemId

DOMString 类型的值,包含 SYSTEM 标识符。

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