下拉复选框

$(‘#beerId‘).combobox({   url: ‘/index.php/Admin/Beer/getBeer‘,   valueField: ‘id‘,   textField: ‘text‘,   panelHeight: ‘auto‘,   multiple: true,   formatter: function (row) {      var opts = $(this).combobox(‘options‘);      return ‘<input type="checkbox" class="combobox-checkbox">‘ + row[opts.textField]   },   onLoadSuccess: function () {      var opts = $(this).combobox(‘options‘);      var target = this;      var values = $(target).combobox(‘getValues‘);      $.map(values, function (value) {         var el = opts.finder.getEl(target, value);         el.find(‘input.combobox-checkbox‘)._propAttr(‘checked‘, true);      })   },   onSelect: function (row) {      //console.log(row);      var opts = $(this).combobox(‘options‘);      var el = opts.finder.getEl(this, row[opts.valueField]);      el.find(‘input.combobox-checkbox‘)._propAttr(‘checked‘, true);   },   onUnselect: function (row) {      var opts = $(this).combobox(‘options‘);      var el = opts.finder.getEl(this, row[opts.valueField]);      el.find(‘input.combobox-checkbox‘)._propAttr(‘checked‘, false);   }});