N/xml Module
Node.nextSibling
Property Description: The next node in a node list or null if the current node is the last node.
Type: xml.Node (read-only)
Supported Script Types: All script types For more information, see SuiteScript 2.0 Script Types.
Module: N/xml Module
Since: 2015.2
Search NetSuite - https://system.netsuite.com/app/help/helpcenter.nl?search=Node.nextSibling

// Code Example 1

//Add additional code

//...

var nodeName = parentNode[0].firstChild.nextSibling.textContent;

//...

//Add additional code



//SOURCE: https://system.netsuite.com/app/help/helpcenter.nl?fid=section_455924011229.html