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HTML DOM createDocumentType() Method
  • Last Updated : 24 Jul, 2020

The DOMImplementation createDocumentType() method returns a Doctype object which can either be used with DOMImplementation createDocument() method for document creation or can be put into the document.

Syntax:

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

Parameters:

  • qualifiedNameStr: It is a DOMString containing the qualified name
  • publicId: It is a DOMString containing the PUBLIC identifier.
  • systemId: It is a DOMString containing the SYSTEM identifiers.

Return Value: This function returns DOMDocumentType node.



Example: In this example, we will create a document type using this method.




</html>
<!DOCTYPE HTML> 
<html>  
<head>
    <meta charset="UTF-8">
    <title>createDocumentType() method</title>
</head>   
  
<body style="text-align:center;">
    <h1 style="color:green;">  
     GeeksforGeeks
    </h1
    <p id="a"
    HTML | DOM createDocumentType() method
    </p>
  
    <button onclick = "Geeks()">
    Click Here
    </button>
    <script
        function Geeks(){
            var dt = 
document.implementation.createDocumentType(
'svg:svg', null, 
            console.log(dt);
            var doc = document.implementation.createDocument (
            var head = document.createElementNS(
            head.setAttribute('id', 'headDoc');
            doc.documentElement.appendChild(head);
            var body = document.createElementNS(
            body.setAttribute('id', 'bodyDoc');
            doc.documentElement.appendChild(body);
            console.log(doc);
        }
  </script
</body>   
</html>

Output:

Before Button Click:

After Button Click: Created document and the doctype can be seen in the console.

Supported Browsers:

  • Google Chrome
  • Edge
  • Firefox
  • Safari
  • Opera
  • Internet Explorer



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