Dear Webmasters,
I have a problem with the process of an XML file, where the tag has no content.


Example of the XML code

<c></c>

The tag exists, but has no data between it.

Firefox error console returns ' Child node has no properties'



The Javascript line is, .

if (xml.getElementsByTagName("c")[a].childNodes[0].length>0) {xc=xml.getElementsByTagName("c")[a].childNodes[0].nodeValue;} else {xc=''}

I am trying to get my script to test if it is empty, but I do not know how to do it.

Must I always ensure that the tag has at least one space within it?

it's because a child node has no lenght.
You must check upon the nodeValue length:
http://developer.mozilla.org/en/docs...ment.nodeValue

if (xml.getElementsByTagName("c")[a].childNodes[0].nodeValue.length>0) {
  xc=xml.getElementsByTagName("c")[a].childNodes[0].nodeValue;
} 
else {xc=''}

I did not tested it, but I think there's where your problem lies.