Question

For a given node I need to find the total number of sub tree node to set the weight property of that given node.
I am wondering how can we recursively count total nodes in sub tree from XML tree structure using DOM and JS and set the weight property of that node?

Answer 1

function countNodes(node) {
  var i = 0, c = node.childNodes.length, result = c;
  for (; i<c; i++) result += countNodes(node.childNodes[i]);
  // if you want: node.weight = result;
  return result;
}