下拉框选中后自动局部刷新

$('#baoxiao_bx_status').combobox({url:'${ctx}dict_ajax_list.do?dict.dict_code=bx_status',valueField:'dict_key',textField:'dict_value',editable:false,value:'1',panelHeight:50,onChange:function(){easyui_form_query('dg_baoxiao');}});