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Which property can be used to return the doctype of any HTML document ?

The document.contentType property in HTML DOM returns the doctype in which the document is being rendered. This is a read only property.

Syntax:

value = document.contentType;

Return value: This property returns a string value of MIME content type of the document.

Example: This example will show how to get the content MIME Type of the document using this property.

HTML




<!DOCTYPE html>
<html>
  
<body>
    <h1 style="color:green">neveropen</h1>
  
    <button onclick="get()">
        Get The Content Type of document
    </button>
  
    <script>
        function get() {
            alert(document.contentType);
        }
    </script>
</body>
</html>


Output:

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