easyUI combobox

    <input id="select_plate_number" class="easyui-combobox"  panelheight="auto" style="width:150px;" />
     <script>
          $(function(){
                $('#select_plate_number').combobox({
                     valueField: 'carid',
                     textField: 'plate_number',
                           url:'/crm/car/getAllCarInfo?member_id={$carMemberInfo.member_id}',
                 onLoadSuccess: function (data) {
                      if (data.length > 0 ) {
                                 var data1 = $('#select_plate_number').combobox('getData');  //赋默认值
                                 $("#select_plate_number").combobox('select', data1[0].carid);
                     }
                 } 
           });
       });
</script>