​x
 
<html>
<head>
<script type="text/javascript" src="/example/xdom/loadxmldoc.js"> 
</script>
</head>
<body>
​
<script type="text/javascript">
xmlDoc=loadXMLDoc("/example/xdom/books.xml");
​
var x=xmlDoc.getElementsByTagName('book');
​
for(i=0;i<x.length;i++)
  {
  x.item(i).setAttribute("category","BESTSELLER");
  }
  
//Output all attribute values
for (i=0;i<x.length;i++)
  {
  document.write(x[i].getAttribute('category'));
  document.write("<br />");
  }
</script>
</body>
</html>
​