DOM - Element Object Method - getElementByTagName

The method getElementByTagName gives the value of the specified element.

Syntax

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

getElementsByTagName(name)

S.No.	Parameter & Description
1	Name It holds the name of the attribute to retrieve.

This method returns the name of the tag.

Example

node.xml contents are as below −

<?xml version = "1.0"?>
<Company>
   <Employee category = "Technical">
      <FirstName>Tanmay</FirstName>
      <LastName>Patil</LastName>
      <ContactNo>1234567890</ContactNo>
      <Email>tanmaypatil@xyz.com</Email>
   </Employee>
</Company>

Following example demonstrates the usage of the getElementByTagName method −

<!DOCTYPE html>
<html>
   <body>
      <div>
         <b>FirstName:</b> <span id = "FirstName"></span>
         <b>LastName:</b> <span id = "LastName"></span>
         <b>Category:</b> <span id = "Employee"></span>
      </div>
      <script>
         if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari
            xmlhttp = new XMLHttpRequest();
         }
         else {// code for IE6, IE5
            xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
         }
         xmlhttp.open("GET","/dom/node.xml",false);
         xmlhttp.send();
         xmlDoc = xmlhttp.responseXML;

         document.getElementById("FirstName").innerHTML=
         xmlDoc.getElementsByTagName("FirstName")[0].childNodes[0].nodeValue;
         document.getElementById("LastName").innerHTML=
         xmlDoc.getElementsByTagName("LastName")[0].childNodes[0].nodeValue;
         document.getElementById("Employee").innerHTML=
         xmlDoc.getElementsByTagName("Employee")[0].attributes[0].nodeValue;

      </script>
   </body>
</html>

Execution

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

FirstName: Tanmay
LastName: Patil
Category: technical

dom_element_object.htm