delete( attribute )
Instance Public methods
Removes an attribute
attribute
either a String, which is the name of the attribute to remove â namespaces
are significant here â or the attribute to remove.
Returns
the owning element
doc = Document.new "<a y:foo='0' x:foo='1' foo='3' z:foo='4'/>"
doc.root.attributes.delete 'foo' #-> <a y:foo='0' x:foo='1' z:foo='4'/>"
doc.root.attributes.delete 'x:foo' #-> <a y:foo='0' z:foo='4'/>"
attr = doc.root.attrib