how to extract values from an XML document using Javascript

Question

I am trying to extract values from the xml document and print them. I also want to count the number of children(child nodes) each node has.That is the first tag has 2 child

Answer 1

Element.childNodes method returns all types of nodes, including whitespace textnodes. It may not be what you want. If you only care for the number of child elements, use childElementCount.

var b = xmlDoc.getElementsByTagName("B")[0];
alert(b.childElementCount); //should output 2

I haven't tried in IE, it may not work. Else, if you want a the element list, use children children not supported on non HTML doc. You can try this function:

function getChildren(element) {
  var nodes = element.childNodes;
  var children = [];
  for (var i = 0; i < nodes.length; i++) {
    if (nodes[i].nodeType == Node.ELEMENT_NODE) children.push(nodes[i]);
  }
  return children;
}

getChildren(b).length;