This function fetch all the descendant elements with a given
localName and namespaceURI.
Список параметров
namespaceURI
The namespace URI.
localName
The local name. Use * to return all elements within
the element tree.
Возвращаемые значения
This function returns a new instance of the class
DOMNodeList of all matched elements in the order in
which they are encountered in a preorder traversal of this element tree.