attributeOldValue property
bool?
get
attributeOldValue
Set to true if attributes is true or omitted and target's attribute value before the mutation needs to be recorded.
Implementation
_i2.bool? get attributeOldValue => _i4.getProperty(
this,
'attributeOldValue',
);
set
attributeOldValue
(bool? value)
Implementation
set attributeOldValue(_i2.bool? value) {
_i4.setProperty(
this,
'attributeOldValue',
value ?? _i6.undefined,
);
}