title: Jquery Validator Add Method validation for checkbox
body: <p>How to add the function like this into jQuery.validator.addMethod :</p>
  
  <pre><code>if (theForm.chk_ccd.checked            &amp;&amp;
     (! theForm.chk_ccd_pos [0].checked) &amp;&amp;
     (! theForm.chk_ccd_pos [1].checked) &amp;&amp;
     (! theForm.chk_ccd_pos [2].checked))
  {
    window.alert ('Please select data from the \"CCD Position\" field.');
    theForm.chk_ccd_pos [0].focus ();
    return;
  }
  </code></pre>
  
  <p>and the validate function here :</p>
  
  <pre><code>function ActionAdd (theForm)
      {
          $("#form").validate
          ({
              rules:
              {
                  de_no: "required",
                  de_name: "required",
                  product_name: "required",
                  plabel_no: "required",
              },
              messages:
              {
                  de_no: "&lt;div class='error'&gt;Please provide Part No.&lt;/div&gt;",
                  de_name: "&lt;div class='error'&gt;Please provide Model Name&lt;/div&gt;",
                  product_name: "&lt;div class='error'&gt;Please provide Product Name&lt;/div&gt;",
                  plabel_no: "&lt;div class='error'&gt;Please provide Part No. (Pack Label)&lt;/div&gt;",
              }
          });
      }
  </code></pre>
  
  <p>Anyone please help, I have stuck with that case.
  Thanks</p>