JS - element properties - nameSpaceURI

revision: January 6, 2025

returns the namespace URI of an element.

The "namespaceURI property" returns the URI of an elements namespace. The property is read-only and has no practical use in HTML.

The namespace URI for HTML elements in HTML documents is : http://www.w3.org/1999/xhtml

Syntax:

element.namespaceURI : the URI of the elements's namespace: "null{} if the element is not in a namespace.

property value:

none :

example

                <div>
                    <p id="par">The namespace URI of this paragraph is: <span id="prop"></span></p>
                </div>
                <script>
                    let uri = document.getElementById("prop").namespaceURI;  
                    document.getElementById("prop").innerHTML = uri;
                </script>