How do I make this loop all children recursively?

Question

I have the following:

for (var i = 0; i < children.length; i++){
   if(hasClass(children[i], "lbExclude")){
       children[i].parentNode.removeChild(children[i]);
   }
};

I would like it to loop through all children's children, etc (not just the top level). I found this line, which seems to do that:

for(var m = n.firstChild; m != null; m = m.nextSibling) {

But I'm unclear on how I refer to the current child if I make that switch? I would no longer have i to clarify the index position of the child. Any suggestions?

Thanks!

Update:

I'm now using the following, according to answer suggestions. Is this the correct / most efficient way of doing so?

function removeTest(child) {
  if (hasClass(child, "lbExclude")) {
    child.parentNode.removeChild(child);
  }
}

function allDescendants(node) {
  for (var i = 0; i < node.childNodes.length; i++) {
    var child = node.childNodes[i];
    allDescendants(child);
    removeTest(child);
  }
}

var children = temp.childNodes;
for (var i = 0; i < children.length; i++) {
  allDescendants(children[i]);
};

Answer 1

Normally you'd have a function that could be called recursively on all nodes. It really depends on what you want to do to the children. If you simply want to gather all descendants, then element.getElementsByTagName may be a better option.

var all = node.getElementsByTagName('*');

for (var i = -1, l = all.length; ++i < l;) {
    removeTest(all[i]);
}