DOM - Element Object Method - getElementsByTagNameNS

The method getElementsByTagNameNS returns a NodeList of all the descendant Elements with a given local name and the namespace URI in document order.

Syntax

Following is the syntax for the usage of the getElementsByTagNameNS method.

elementObj.getElementsByTagNameNS(namespaceURI, localName)

S.No. Parameter & Description
1

namespaceURI

Is the namespace URI of elements to look for.
2

namespaceURI

Is either the local name of elements to look for or the special value "*", which matches all elements.

It returns a new NodeList object containing all the matched Elements.

Example

node_ns.xml contents are as below −

<?xml version = "1.0"?>
<Company>
   <Employee xmlns:e = "http://www.tutorials.com/technical/" category = "technical">
      <e:FirstName e:lang = "en">Tanmay</e:FirstName>
      <e:LastName>Patil</e:LastName>
      <e:ContactNo>1234567890</e:ContactNo>
      <e:Email>tanmaypatil@xyz.com</e:Email>
   </Employee>
   
   <Employee xmlns:n = "http://www.tutorials.com/non-technical/" category = "non-technical">
      <n:FirstName n:lang = "en">Taniya</n:FirstName>
      <n:LastName>Mishra</n:LastName>
      <n:ContactNo>1234667898</n:ContactNo>
      <n:Email>taniyamishra@xyz.com</n:Email>
   </Employee>
</Company>

Following example demonstrates the usage of the setAttributeNodeNS method −

<!DOCTYPE html>
   <head>
      <script>
         function loadXMLDoc(filename) {
            if (window.XMLHttpRequest) {
               xhttp = new XMLHttpRequest();
            } else // code for IE5 and IE6 {
               xhttp = new ActiveXObject("Microsoft.XMLHTTP");
            }
            xhttp.open("GET",filename,false);
            xhttp.send();
            return xhttp.responseXML;
         }
      </script>
   </head>
   <body>
      <script>
         xmlDoc = loadXMLDoc("/dom/node_ns.xml");
         ns="http://www.tutorials.com/technical/";
         x = xmlDoc.getElementsByTagNameNS(ns, 'FirstName');
          document.write(x[0].nodeName); // returns: e:FirstName
      </script>
   </body>
</html>

Execution

Save this file as elementattribute_getElementsByTagNameNS.htm on the server path (this file and node_ns.xml should be on the same path in your server). We will get the output as shown below −

e:FirstName
dom_element_object.htm
Advertisements