Linked Lists - Length & Count

gistfile1.txt

function Node(data) {
  this.data = data;
  this.next = null;
}

function length(head) {

if (head == null)
return 0;
else
return 1 + length(head.next);
}

function count(head, data) {
if (head == null)
return 0;
var count = 0;
while (head != null) 
    {
        if (head.data == data)
           count++;
        head = head.next;
    }
    return count;
}