removeAttribute method
Removes the attribute value with the given fully qualified name.
Both name and namespace can be a specific String; or '*' to match
anything. If no namespace is provided, the fully qualified name is
compared; otherwise only the local name is considered.
For example:
element.removeAttribute('xsd:name')removes the attribute with the fully qualified attribute namexsd:name.element.removeAttribute('name', namespace: '*')removes the attribute with the local attribute namenameno matter the namespace.element.removeAttribute('*', namespace: 'http://www.w3.org/2001/XMLSchema')removes the attribute within the provided namespace URI.
Implementation
void removeAttribute(String name, {String? namespace}) =>
setAttribute(name, null, namespace: namespace);