[jQuery] [validate plugin] How to call a function before the validation start?

[Giovanni Battista Lenoci]

Hi, I'm using the validate plugin, I have a comment form where I want to 
leave the possibility to insert an anonymous comment, but I want to 
alert the user before the submit.

Then, if I have this code, what I have to do, to add a confirm('Are you 
sure')?
I'm looking for a method like "onBeforeSubmit" :-)

Thank you.

 if($('#commenti_form').size() > 0) {
    $("#commenti_form").validate({
      invalidHandler: function(form, validator) {
         var errors = validator.numberOfInvalids();
         if (errors) {
           $("div#error_container").show();
         } else {
           $("div#error_container").hide();
         }
       },
       onfocusout: false,
       onkeyup: false,
       onclick:false,
       meta: "validate",
       errorClass: "invalid",
       errorPlacement: function(error, element) {
         $labelToAppendTo = $('label[for='+element[0].id+']');
         
error.appendTo($("div#error_container")).clone().appendTo($labelToAppendTo);
         $('<br />').appendTo($("div#error_container"));
       }
    });
 }


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