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  1. or download this
    use warnings;
use strict;
...
$_->[1] =~ s/\W+//g for @ids2text;

print join ", ", map sprintf("%s=%s", @$_), @ids2text;
  2. or download this
    my @ids2text = map { [ $_->getAttribute('id'), $_->textContent ] }
    $doc->findnodes(q{//div[@class='data']});
  3. or download this
    my $xpc = XML::LibXML::XPathContext->new($doc);
$xpc->registerNs('html', 'http://www.w3.org/1999/xhtml');
my @ids2text = map { [ $_->getAttribute('id'), $_->textContent ] }
    $xpc->findnodes(q{//html:div[@class='data']});