easyui中combobox 取值

<input id="cmbstrTrainType" class="easyui-combobox" name="cmbstrTrainType" style="width:102px;height: 32px;" data-options="
url:'/Page/Ashx/GetCmbInfo.ashx?strFun=GetstrTrainTypeEasyUI',
method:'get',
valueField:'strTypeName',
textField:'strTypeName',
panelHeight:'300'

"/>

//須要id和name，兩個想等，否則下面取不出來

function beforeSave() {

//取ID
var jjj= $('#cmbstrTrainType').combobox('getValue');
//取顯示的name
var jjkj= $('#cmbstrTrainType').combobox('getText');

}