XML DOM | hasChildNodes Method

XML DOM - hasChildNodes 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 hasChildNodes Method.

The hasChildNodes method returns whether the current node has any children. It returns TRUE if the current node has a child, FALSE otherwise.

Syntax

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

nodeObject.hasChildNodes()

Return Value

This method returns the boolean value true if the node has any children, else it returns false.

Example

Following below are the node.xml contents -

<?xml version = "1.0"?>
<Company>
   <Employee category = "Technical">
      <FirstName>Kennedy</FirstName>
      <LastName>Nkpara</LastName>
      <ContactNo>1234567890</ContactNo>
      <Email>kennedynkpara@xyz.com</Email>
   </Employee>
   
   <Employee category = "Non-Technical">
      <FirstName>Stephanie</FirstName>
      <LastName>Francis</LastName>
      <ContactNo>1234667898</ContactNo>
      <Email>stephaniefrancis@xyz.com</Email>
   </Employee>
   
   <Employee category = "Management">
      <FirstName>Justice</FirstName>
      <LastName>Dauglas</LastName>
      <ContactNo>1234562350</ContactNo>
      <Email>justicedauglas@xyz.com</Email>
   </Employee>
</Company>


The following example illustrates the usage of the hasChildNodes method -

<!DOCTYPE html>
<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.xml");

         y = xmlDoc.getElementsByTagName("Employee")[0];
         document.write("Checks for the existence of child node : ");
         document.write(y.hasChildNodes());
      </script>
   </body>
</html>

Output

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

Checks for the existence of child node : true


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 insertBefore Method.

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