Ext.form.ComboBox 后台取值 动态加载 ext5.0.0

// 输入电话号
        var $inpTel = new Ext.form.TextField({
            fieldLabel: ‘电话号‘,
            labelWidth: 70,
            regex: /^[1]\d{10}$/,
            enableKeyEvents: true,
            margin: "10 10 0 10"
        });

        // 显示号码状态
        var $telState = new Ext.form.Label({
            text: ‘‘,
            margin: ‘0 0 0 85‘,
            style: {
                color: ‘red‘
            }
        });


        // 获取合作伙伴流量包产品列表的参数
        var params = {
            ‘phone‘: $inpTel.getValue()
        };

        var $comboboxProductList;

        // 产品列表数据
        var remoteStore = Ext.create(‘Ext.data.Store‘, {
            proxy: ({
                type: "ajax",
                method: "POST",
                url:-------路径--------,
                reader: {
                    type: ‘json‘,
                    successProperty:"success",
                    rootProperty: "data",
                    transform: {
                        fn: function(data) {
                            var code = data["code"];
                            var message = data["message"];
                            var data = data["data"];
                            //console.dir(code);
                            //console.dir(message);
                            if (code!=0) {
                                $comboboxProductList.disable();
                                $telState.setText(‘手机号码有误‘);
                            }else{
                                $comboboxProductList.enable();
                                $comboboxProductList.setValue(data[0]["productId"]);
                            }
                            return data;
                        },
                        scope: this
                    }
                }
            }),
            //listeners: {
            //    load: function (store, records, successful, eOpts) {
            //        console.log("====>[store.getData()]");console.log(store.getData());
            //        console.log("====>[records]");console.log(records);
            //        console.log("====>[successful]");console.log(successful);
            //        console.log("====>[eOpts]");console.log(eOpts);
            //    }
            //},
            fields: ["productId", "productName"]
        });

        //选择下拉框
        $comboboxProductList = new Ext.form.ComboBox({
            fieldLabel: ‘AAAAAA‘,
            margin: ‘5 0 0 10‘,
            labelWidth: 70,
            emptyText: ‘请选择‘,
            autoSelect:true,
            displayField: ‘productName‘,   //下拉显示
            valueField: ‘productId‘,
            forceSelection: true,
            queryDelay: 300,
            store: remoteStore,
            queryMode: ‘remote‘,
            hiddenName: ‘productId‘
        });

        // 给号码获取下拉框
        $inpTel.on(‘keyup‘, function () {
            //  不满足检查条件
            if (this.getValue().length != 11) return;

            // 满足检查条件，修改store请求参数
            var params = {
                ‘phone‘: $inpTel.getValue()
            }; 

            remoteStore.getConfig("proxy").setExtraParams(params);
            remoteStore.load();

        });