altinn-designsystem/source/js/production/modules/expandContent.js

Altinn Design system based on Pattern Lab.

var setupExpandContent = function() {
  var expandContent = function() {
    $($(this).data('target')).addClass('a-expanded');
    $(this).hide();
  };

  $('*[data-toggle="altinn-expand"]').each(function() {
    var targetHeight;
    var $target = $($(this).data('target'));
    $target.removeClass('a-expandable-content');
    targetHeight = $target.outerHeight();
    $(this).off('click', expandContent);
    if (targetHeight > 320) {
      $target.addClass('a-expandable-content');
      $target.removeClass('a-expanded');
      $(this).on('click', expandContent);
      $(this).show();
    } else {
      $(this).hide();
    }
  });
};