Hello folks! welcome back to a new edition of our tutorial on XML DOM. In this tutorial, we will be discussing about the XML DOM Element Object getElementsByTagNameNS Method.
The getElementsByTagNameNS Method is used to return a NodeList of all descendant Elements with a given local name and the namespace URI in a document order.
The getElementsByTagNameNS Method is used to return a NodeList of all descendant Elements with a given local name and the namespace URI in a document order.
Syntax
The following below is the syntax to use the getElementsByTagNameNS method -
elementObj.getElementsByTagNameNS(namespaceURI, localName)
Parameter Details
| 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. |
Return Value
This method returns a new NodeList object containing all the matched elements.
Example
Following are the node.xml contents -
<?xml version = "1.0"?> <Company> <Employee xmlns:e = "http://www.webdesigntutorialz.com/technical/" category = "technical"> <e:FirstName e:lang = "en">Kennedy</e:FirstName> <e:LastName>Nkpara</e:LastName> <e:ContactNo>1234567890</e:ContactNo> <e:Email>kennedynkpara@xyz.com</e:Email> </Employee> <Employee xmlns:n = "http://www.webdesigntutorialz.com/non-technical/" category = "non-technical"> <n:FirstName n:lang = "en">Stephanie</n:FirstName> <n:LastName>Francis</n:LastName> <n:ContactNo>1234667898</n:ContactNo> <n:Email>stephaniefrancis@xyz.com</n:Email> </Employee> </Company>
The below example illustrates the usage of Element Object getElementsByTagNameNS 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.webdesigntutorialz.com/technical/"; x = xmlDoc.getElementsByTagNameNS(ns, 'FirstName'); document.write(x[0].nodeName); // returns: e:FirstName </script> </body> </html>
Output
Save this file as elementmethod_getelementsbytagnamens.html on the server path (this file and node.xml should be on the same path in your server). This is going to give us the following output below -
e:FirstName
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 the Element Object hasAttribute Method.
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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.