easyui下拉列表代码块

easyui加载表格：
$('#dg').datagrid({
url: 'datagrid_data1.json',
method: 'get',
title: 'Context Menu on DataGrid',
iconCls: 'icon-save',
width: 700,
height: 250,
fitColumns: true,
singleSelect: true,
columns:[[
{field:'itemid',title:'Item ID',width:80},
{field:'productid',title:'Product ID',width:120},
{field:'listprice',title:'List Price',width:80,align:'right'},
{field:'unitcost',title:'Unit Cost',width:80,align:'right'},
{field:'attr1',title:'Attribute',width:250},
{field:'status',title:'Status',width:60,align:'center'}
]],
onHeaderContextMenu: function(e, field){
e.preventDefault();
if (!cmenu){
createColumnMenu();
}
cmenu.menu('show', {
left:e.pageX,
top:e.pageY
});
}
});
easyui加载下拉表格
$.ajax({
type : "post",
url : 'getAllServer.action',
data :  {},
dataType : "json",
success : function(data) {
var obj = JSON.parse(data);
var value = "";
$('#serverid').combogrid({
panelWidth:450,
//value:'006',
idField:'id',
textField:'name',
data:obj,
//url:'datagrid_data.json',
columns:[[
{field:'id',title:'id',width:60},
{field:'name',title:'别名',width:100},
]]
});

},
error : function() {
alert("系统异常，请稍后重试！");
}
});
$('#serverid').combogrid({  
  onChange: function (newValue, oldValue) {  
  $.ajax({
url : "upserverId.action?serverId="+newValue, // 后台地址
type : "post",
dataType : "json",
data : {}, //自己需要传递的数据 {}
success : function(data) {
var obj = JSON.parse(data);
//parent.$("#doortxt").html(obj.name)
alert(obj.info)
parent.dg.cancel();
},
error : function() {

}
});
  }  
});