When you set '' in class() method it should not return class=""

[terabytesoftw]

Q	A
Version	3
PHP version	8.0
Operating system	Windows11

[vjik]

For remove attribute in other methods we use null, for example ->id(null). I think in class we also should use null for don't add class and empty string should add attribute. See PR #78, which allow pass null argument to methods Tag::class() and Tag::replaceClass().

[samdark]

Empty class doesn't make sense so I agree with @terabytesoftw proposal.

[vjik]

this is incorrect. empty string and without attribute - this is different cases

[samdark]

Yes if we do not consider CSS semantics. If we do then empty "class" value doesn't make any sense.

[samdark]

Still, for consistency purposes and following formal spec it makes sense to use nulls instead as in #78.