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XML DOM | isDefaultNamespace Method

XML DOM - isDefaultNamespace Method

Hello folks! welcome back to a new edition of our tutorial on XML DOM. In this tutorial, we are going to be studying about the XML DOM isDefaultNamespace Method.

The XML DOM isDefaultNamespace method accepts a namespace URI as argument and returns true if the namespace is the default namespace on the given node otherwise it returns false.


The following below is the syntax to use the isDefaultNamespace Method -


Parameter Details

S.No.Parameter & Description


It is a String representing the namespace against which the element will be checked.

Return Value

This method returns true if the namespace is the default namespace on the given node or false if not.


Following below are the node.xml contents -

<?xml version = "1.0"?>
   <Employee category = "Technical">
   <Employee category = "Non-Technical">
   <Employee category = "Management">

The following example illustrates the usage of the isDefaultNamespace method -

<!DOCTYPE html>
         function loadXMLDoc(filename) {
            if (window.XMLHttpRequest) {
               xhttp = new XMLHttpRequest();
            } else // code for IE5 and IE6 {
               xhttp = new ActiveXObject("Microsoft.XMLHTTP");
            return xhttp.responseXML;
         xmlDoc = loadXMLDoc("/dom/node_ns.xml");
         x = xmlDoc.getElementsByTagName('Employee');
         document.write("<b>Namespace URI of Employee node is:</b> "+x.item(0).attributes[0].namespaceURI);
         var uri = "http://www.webdesigntutorialz.com/technical/";
         y = xmlDoc.getElementsByTagNameNS(uri,'FirstName')[0];
         document.write("<br><b>isDefaultNamespace:</b> ");


Save this file as nodemethod_isDefaultNamespace.html on the server's path (this file and node.xml should be on the same path in your server). This gives us the following output below -

Namespace URI of Employee node is: http://www.w3.org/2000/xmlns/
isDefaultNamespace: false 

Alright guys! This is where we are going to be rounding up for this tutorial post. In our next tutorial, we will be studying about XML DOM isEqualNode Method.

Feel free to ask your questions where necessary and we will attend to them as soon as possible. If this tutorial was helpful to you, you can use the share button to share this tutorial.

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Thanks for reading and bye for now.

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