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HTML::DOM::Collection::Elements(3) User Contributed Perl Documentation HTML::DOM::Collection::Elements(3)
 

HTML::DOM::Collection::Elements - A subclass of HTML::DOM::Collection for form elements

Version 0.054

  use HTML::DOM;
  $doc = HTML::DOM->new;
  $doc->write('
      <form>
          <input name=r type=radio value=1>
          <input name=r type=radio value=2>
      </form>
  ');
  $doc->close;
  
  $elements = $doc->forms->[0]->elements;
  # returns an HTML::DOM::Collection::Elements object
    
  $elements->[0]; # first radio button
  $elements->item(0); # same
  $elements->{r}; # an array of buttons named 'r'
  $elements->namedItem('r'); # same
  () = $elements->namedItem('r'); # list, not array
  
  $elements->length; # same as scalar @$elements

This implements the HTMLCollection interface as described in the W3C's DOM standard, except that the "namedItem" method (and the corresponding hash dereference) will return a list of form elements if there are several with the same name. This is actually in violation of the DOM standard, but it is in accordance with the way most web browsers work (at least Safari and Firefox).

Normally you would simply call HTML::DOM::Element::Form's "elements" method (as in the "SYNOPSIS"). But if you wall to call the constructor anyway, here is the syntax:
  $elements = HTML::DOM::Collection::Elements->new($nodelist)
$nodelist should be a node list (HTML::DOM::NodeList) object.

$elements->length
Returns the number of items in the collection.
$elements->item($index)
Returns item number $index, numbered from 0. Note that you call also use "$elements->[$index]" for short.
$elements->namedItem($name)
Returns the item named $name, is there is only one. If there is more than one, it returns a node list object in scalar context, or a list in list context. You can also write "$collection->{$name}".

HTML::DOM
HTML::DOM::Collection
HTML::DOM::Element::Form
HTML::DOM::NodeList (manpage not written yet)
HTML::DOM::NodeList::Magic (manpage not written yet)
2014-12-23 perl v5.28.1

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