Retrieve an attribute. — xml_attr

xml_attrs() retrieves all attributes values as a named character vector, xml_attrs() <- or xml_set_attrs() sets all attribute values. xml_attr() retrieves the value of single attribute and xml_attr() <- or xml_set_attr() modifies its value. If the attribute doesn't exist, it will return default, which defaults to NA. xml_has_attr() tests if an attribute is present.