How to add Unbounce form parameters to a URL

Unbounce Form URL Params

<script>
jQuery(document).ready(function() {
  var processingSubmit = false;
  var submitButton = jQuery('#'+window.module.lp.form.data.formButtonId);
  var submitAction = submitButton.data('events').click[0];
  var baseURL = window.module.lp.form.data.confirmData;
  submitButton.unbind('click', submitAction);
  submitButton.click(function(e) {
    if (processingSubmit) {
      return;
    }
    processingSubmit = true;
    window.module.lp.form.data.confirmData = baseURL + '?' + jQuery.param(jQuery.map(jQuery('form').serializeArray(),
      function(param) {
        return (param.name === 'pageId' || param.name === 'pageVariant') ?
          null :
          param;
      }));
    submitAction.handler(e);
    processingSubmit = false;
  });
});
</script>