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HTML | DOM doctype Property

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  • Difficulty Level : Basic
  • Last Updated : 05 Jan, 2023
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The DOM doctype property is used to return the doctype of any HTML document. The DocumentType object is the name property used to returns the name of the object. If there is no doctype declared in the document then it returns Null value. 





<!DOCTYPE html.5>
        <title>DOM doctype Property</title>
            h1, h2 {
            body {
    <body style="text-align:center;">
        <h2>DOM doctype Property</h2>
        <button onclick="geeks()">Submit</button>
        <p id="sudo"></p>
            function geeks() {
                var gfg =;
                document.getElementById("sudo").innerHTML = gfg;



Supported Browsers: The browser supported by DOM doctype property are listed below:

  • Google Chrome 1
  • Edge 12
  • Internet Explorer 6
  • Firefox 1
  • Opera 12.1
  • Safari 1
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