extjs4下拉框

//extjs4下的下拉框，目前store得写在控件里面，具体原因未知
 1             xtype: 'container',
 2             anchor: '100%',
 3             layout: 'hbox',
 4             items: [{
 5                 xtype: 'container',
 6                 flex: 1,
 7                 layout: 'anchor',
 8                 items: [{
 9                     xtype: 'combo',
10                     fieldLabel: '客户全称',
11                     //afterLabelTextTpl: required,
12                     name: 'kehqc',
13                     anchor: '95%',
14                     valueField: 'name',
15                     displayField: 'name',
16                     triggerAction: 'all',
17                     queryMode: 'local',
18                     //autoLoad:true,
19                     //store分开写会报错,目前原因不明 
20                     store: new Ext.data.Store({
21                         singleton: true,
22                         proxy: {
23                             type: 'ajax',
24                             url: 'BLL/H_suipkjBLL.aspx?action=cblist',
25                             actionMethods: 'post',
26                             reader: {
27                                 type: 'json',
28                                 root: 'root'
29                             }
30                         },
31                         fields: ['name'], //不管有没有model，这个fields都必须写，而且只能写在这里，
32                         //在reader里面的话会报错"reader.read is not a function"原因暂时不详
33                         autoLoad: true
34                     }),
35                     loadingText: '正在加载数据，请稍侯……',
36                     triggerAction: 'all',
37                     valueField: 'name',
38                     displayField: 'name',
39                     listeners: {//客户和其他信息的联动
40                         'select': function (combo, record, index) {
41                             //alert(combo.value),
42                             Ext.Ajax.request
43                                      ({
44                                          params: { parakehqc: combo.value }, //发送的参数
45                                          url: "BLL/H_suipkjBLL.aspx?action=cblink", //请求的地址
46                                          success: function (response, option) {
47                                              var rlnoteinfo = response.responseText;
48                                              var aryinfo = new Array();
49                                              aryinfo = rlnoteinfo.split("|");
50                                              fp.getForm().findField('guossh').setValue(aryinfo[0]);
51                                              fp.getForm().findField('kaihyh').setValue(aryinfo[1]);
52                                              fp.getForm().findField('yinhzh').setValue(aryinfo[2]);
53                                              fp.getForm().findField('gongsdz').setValue(aryinfo[3]);
54                                              fp.getForm().findField('lianxdh').setValue(aryinfo[4]);
55                                          }
56                                      });
57                         }
58}

写死的外部store

//下面这些写在ext.require下面,ext.onready外面
var states = [
    { "id": "01", "name": "通路/二批" },
    { "id": "02", "name": "餐饮" },
    { "id": "03", "name": "夜场" },
    { "id": "04", "name": "商超" },
    { "id": "05", "name": "婚宴/团购" },
    { "id": "06", "name": "其他" },
    { "id": "99", "name": "不区分层面" }
    ];
function createStore() {
    // The data store holding the states; shared by each of the ComboBox examples below
    return Ext.create('Ext.data.Store', {
        autoDestroy: true,
        model: 'State',
        data: states
    });
}

//下面为combox内容
                        xtype: 'combobox',
                        id: 'cengm',
                        typeAhead: true,
                        triggerAction: 'all',
                        queryMode: 'local',
                        selectOnTab: true,
                        lazyRender: true,
                        displayField: 'name',
                        valueField: 'id',
                        store: createStore()
测试可用,使用ajax获取json暂时未测试