Returns true when an attribute with a given local name and
namespace URI is specified on this element or has a default value,
false otherwise.
Per [XML Namespaces]
, applications must use the value null as the
namespaceURI parameter for methods if they wish to have
no namespace.
namespaceURI | The namespace URI of the attribute to look for. | |
localName | The local name of the attribute to look for. |
true if an attribute with the given local name
and namespace URI is specified or has a default value on this
element, false otherwise.
DOMException
| 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