How can I extract and format HTML found in a div tag, using Perl?

Note:

• Using HTML::TreeBuilder or other suitable method

Question:

• Using Perl with LWP, for the following HTML, how to search for the literal string whatever between the start tag and end tag div and then get all text between the aforementioned start and end tag, while adhering to formatting text tags

  <div id="foo" class="blah">
  <tt>
  test
  <br>test 
  <br>whatever
  <br>test
  </div>
  

To print to STDOUT:

test
test
wh开发者_运维百科atever
test 

$node->find_by_attribute(attribute, value) and $node->as_text() 

http://lwp.interglacial.com/ch09_03.htm

my @elms = $tree->look_down(
  _tag => "div",
  sub { $_[0]->as_text =~ /whatever/ },
);

for my $elm (@elms) {
  print $elm->as_trimmed_text;
}