The linepos property is read-only and contains the position within the line of the character causing the parse error.

In the following example the file 'staff.xml' is loaded which includes an error: the slash character (/) is missing from the closing 'name' tag of the second 'employee' element. If a parse error occurs, as it does in this case, an alert displays the number of the line where it occurs, and the offending character's position within that line.

Note:
Where no parse error occurs, the errorCode property returns 0.

XML:
<staff>
   <employee ssn="123456" pay="3">
      <name>John Sullivan</name>
      <position>senior executive</position>
   </employee>
   <employee ssn="987654" pay="2">
      <name>Mary Lopez<name>
      <position>personal assistant</position>
   </employee>
</staff>

Code (JavaScript):
xml_doc = new ActiveXObject("Microsoft.XMLDOM");
xml_doc.async = false;
xml_doc.load("staff.xml");
err = xml_doc.parseError;
if (err.errorCode != 0)
   alert("Line: " + err.line + "\nLine Position: " + err.linepos);

The alert displays the following message:

Output:
Line: 10
Line Position: 25