formify.js

/* Send a form with a link with data-form="#form_id"
    /  You can define params="name,value name,value"
    /  All params will be append to the form as hidden inputs before send it
    */

    $('body').on('click', '[data-form]', function(e) {
      e.preventDefault();
      var el = $(this),
          form = $(el.data('form')),
          params;

      if (el.data('params')) {
        params = el.data('params').split(' ');
        params.forEach(function(param) {
          param = param.split(',');
          form.append('<input type="hidden" name="' + param[0] + '" value="' + param[1] + '">');
        });
      }
      form.submit();
    });