code: function (name) {
              var t = this,
                  d = t.doc,
                  prefix = t.o.prefix,
                  $dropdown = $('[data-' + prefix + 'dropdown=' + name + ']', t.$box),
                  $btn = $('.' + prefix + name + '-button', t.$btnPane),
                  show = $dropdown.is(':hidden');
  
              $('body', d).trigger('mousedown');
  
              if (show) {
                  var o = $btn.offset().left;
                  $btn.addClass(prefix + 'active');
  
                  $dropdown.css({
                      position: 'absolute',
                      top: $btn.offset().top - t.$btnPane.offset().top + $btn.outerHeight(),
                      left: (t.o.fixedFullWidth && t.isFixed) ? o + 'px' : (o - t.$btnPane.offset().left) + 'px'
                  }).show();
  
                  $(window).trigger('scroll');
  
                  $('body', d).on('mousedown.' + t.eventNamespace, function (e) {
                      if (!$dropdown.is(e.target)) {
                          $('.' + prefix + 'dropdown', t.$box).hide();
                          $('.' + prefix + 'active', t.$btnPane).removeClass(prefix + 'active');
                          $('body', d).off('mousedown.' + t.eventNamespace);
                      }
                  });
              }
          }
docs: Open dropdown when click on a button which open that