function load_adthrive_terms(taxonomy) {
  return function (query, callback) {
    jQuery.ajax({
      url: ajaxurl,
      type: 'GET',
      data: {
        action: 'adthrive_terms',
        taxonomy: taxonomy,
        query: query,
      },
      error: function () {
        callback();
      },
      success: callback,
    });
  };
}

jQuery(document).ready(function ($) {
  $('#disabled_tags').selectize({
    preload: true,
    load: load_adthrive_terms('post_tag'),
  });

  $('#disabled_categories').selectize({
    preload: true,
    load: load_adthrive_terms('category'),
  });
});