SYNOPSIS use HTML::Tree::Create::Callback qw(create_html_tree_using_callback); $tree = create_html_tree_using_callback( sub { my ($level, $seniority) = @_; $id++; if ($level == 0) { return ( 'body', {}, # attributes "text before children", "text after children", 3, # number of children node ); } elsif ($level == 1) { return ('p', {id=>$id}, "", "", 2); } elsif ($level == 2) { return ( 'span', {id=>$id, class=>"foo".$seniority}, 'text3.'.$seniority, 'text4', 0, ); } } ); print $tree; Sample result: text before children

text3.0 text4 text3.1 text4

text3.0 text4 text3.1 text4

text3.0 text4 text3.1 text4

text after children DESCRIPTION FUNCTIONS create_html_tree_using_callback($cb) => str Create HTML document using callback for each element. Your callback will be called with these arguments: ($level, $seniority) where $level starts with 0 for the root element, then 1 for the child element, and so on. $seniority starts with 0 for the first child, 1 for the second child, and so on. The callback is expected to return a list: ($element, \%attrs, $text_before, $text_after, $num_children) where $element is a string containing element name (e.g. body, p, and so on), \%attrs is a hashref containing list of attributes, $text_before is text to put before the first child element, $text_after is text to put after the last child element, and $num_children is the number of child element to have. The callback will then be called again for each child element. To stop the tree from growing, at the last level you want you should put 0 to the number of children. SEE ALSO The interface of this module is modeled after Tree::Create::Callback.