title: jQuery access input field by name[value][id]
body: <p>I have some HTML code like this:</p>
  
  <pre><code>&lt;input id="fieldname-1" name="field_name[value][1]" value="1" type="checkbox" /&gt;
  &lt;input id="fieldname-2" name="field_name[value][2]" value="2" type="checkbox" /&gt;
  &lt;input id="fieldname-3" name="field_name[value][3]" value="3" type="checkbox" /&gt;
  </code></pre>
  
  <p>I want to access this with jQuery like:</p>
  
  <pre><code>$('input[field_name]').change( function() { dosomething(); });
  </code></pre>
  
  <p>i can not add a class field to do this by calling <code>$('.classname')</code> because it is rendered by the cck module of Drupal and i don't want to add this to the theme layer.</p>
  
  <p>The best thing would be to let my module add a class for every field. but a quicker solution would be to know how to access these fields by jQuery</p>