Hi Perl_Love,

There are two separate things going on here:

First, class="a b" specifies that the anchor has two separate classes, named "a" and "b".

Second, the selector 'a.a b' means to select an element b (bold) that is a descendant of an a element (anchor) of class "a".

So to make your second example work, you could specify the selector to match an anchor that has both classes by chaining them, giving "a.a.b":

use Mojo::DOM;
my $dom = Mojo::DOM->new();
my $test2=$dom->parse('<a class="a b">2016-05-18</a>')->at('a.a.b')->t
+ext;
print "$test2\n";
__END__
2016-05-18
[download]

Hope this helps,
-- Hauke D