$.ajax({
    url :"<?php echo base_url();?>booking/dispatch_challan/DispatchChallanController/createDispatchChallan",
    type:"POST",
    dataType: "json",
    data:$("#dispatch_challan_form").serialize(),
    data:$("#dispatch_challan_form").serialize()+'&disp_ch_ids='+allVals,
    success: function(data)
    {
     if(data.create_dispatch_challan.form_status=='false')
      {
      alertify.error('you may occured some server side errors');
      }else if(data.create_dispatch_challan.form_status=='true')
      {
    alertify.success(data.create_dispatch_challan.form_message);
    if (confirm())
     {
      alert("print");
      }else{
      alert("Do not print");
    }
    }
    }
    });