Adds a node using its namespaceURI and
localName. If a node with that namespace URI and that
local name is already present in this map, it is replaced by the new
one. Replacing a node by itself has no effect.
Per [XML Namespaces]
, applications must use the value null as the namespaceURI parameter
for methods if they wish to have no namespace.
arg | A node to store in this map. The node will later be
accessible using the value of its namespaceURI and
localName attributes. |
Node replaces an existing node the
replaced Node is returned, otherwise null
is returned.
DOMException
| WRONG_DOCUMENT_ERR: Raised if arg was created from a
different document than the one that created this map.
NO_MODIFICATION_ALLOWED_ERR: Raised if this map is readonly. INUSE_ATTRIBUTE_ERR: Raised if arg is an
Attr that is already an attribute of another
Element object. The DOM user must explicitly clone
Attr nodes to re-use them in other elements.
HIERARCHY_REQUEST_ERR: Raised if an attempt is made to add a node doesn't belong in this NamedNodeMap. Examples would include trying to insert something other than an Attr node into an Element's map of attributes, or a non-Entity node into the DocumentType's map of Entities. NOT_SUPPORTED_ERR: May be raised if the implementation does not support the feature "XML" and the language exposed through the Document does not support XML Namespaces (such as [HTML 4.01]). |
Diagram: Node Support