(function ($) {
  Drupal.behaviors.flatstyleThemeToggleTeaserCard = {
    attach: function (context, settings) {

      /**
       * Toggle teaser card
       */
      // Show button only if teaser is long enough.
      $(".field--name-field-page-teaser").each(function () {
        if ($(this).height() > 100) {
          $(this).next().find(".teaser-expand-btn-2").addClass("visible");
        }
      });
      // Show button only if teaser is long enough.
      $(".field--name-field-video-teaser").each(function () {
        if ($(this).height() > 100) {
          $(this).next().find(".teaser-expand-btn-2").addClass("visible");
        }
      });

      // Toggle CSS class to trigger the effect.
      $(".teaser-expand-btn-2").click(function () {
        var nid = $(this).closest('article').attr('nid');
        $('article[nid="' + nid + '"]').toggleClass("article-open");
      });

    }
  };
})(jQuery);