title: Jquery CheckBox
body: <pre><code>var $field = $(this);
              if ($field.is('input')) {
                  alert(1);
                  if ($field.attr('type') == 'checkbox') {
                      alert(2);
                      if ($field.attr('value') == "true")
                          return $field.attr('checked');
                  }
  
                  return $field.val();
              }
  </code></pre>
  
  <p>I want to check if value of checkbox is true i add attribute checked = checked for checkbox. but my code is wrong. please help me.thanks</p>