use HTML::TreeBuilder::XPath;

my $file = 'example.html';
my @result;

my $tree = HTML::TreeBuilder::XPath->new;
$tree->empty_element_tags(1); # calls this on HTML::Parser
$tree->parse_file($file);
$tree->eof;

my @divs = $tree->findnodes('//div[@class="data"]');

for my $div (@divs) {
	my $text = $div->as_text || '';
	$text =~ s/\W//g;
	push(@result, $div->attr('id') . "=$text");
}

print join(', ',@result);