Iterators are used to step through a set of nodes e.g. the set of nodes in a NodeList the Document subtree governed by a particular Node the results of a query or any other set of nodes. The set of nodes to be iterated is determined by the implementation of the NodeIterator. DOM Level 2 specifies a single NodeIterator implementation for Document-order traversal of a Document subtree. Instances of these iterators are created by calling DocumentTraversal .createNodeIterator....of nodes in a NodeList, the document subtree governed by a particular...implementation for document-order traversal of a document subtree. Instances...