​x
 
<html>
<head>
<script type="text/javascript" src="/example/xdom/loadxmldoc.js"> 
</script>
</head>
<body>
​
<script type="text/javascript">
xmlDoc=loadXMLDoc("/example/xdom/books_comment.xml");
​
x=xmlDoc.getElementsByTagName("book")[0].childNodes;
​
for (i=0;i<x.length;i++)
{ 
if (x[i].nodeType==8)
  { 
  //Process only comment nodes
  document.write(x[i].length);
  document.write("<br />");
  } 
}
</script>
</body>
</html>
​