javascript - EXTJS JsOnStore 位但显示空白值

Question

这是一个带有 \u0001 的图片显示 PowerOff 返回值，但不幸的是，当我在 JsOnStore 中存储失败并且我试图为alert('PowerOff')空白时，为什么？

这是我的 JsOnStore 模型数据

Ext.define('GoogleMarkerModel', {
        extend: 'Ext.data.Model',
        fields: [
        {name: 'ID',    type: 'int'},
        {name: 'Locating',    type: 'int'},
        {name: 'MainPower',    type: 'int'},
        {name: 'Acc',    type: 'int'},
        {name: 'PowerOff',    type: 'int'}, // i have tried int,string,bit
        {name: 'Alarm',    type: 'int'},
        {name: 'Speed',    type: 'int'},
        {name: 'Direction',    type: 'int'},
        {name: 'Latitude',    type: 'float'},
        {name: 'Longitude',    type: 'float'},
        {name: 'DateTime',    type: 'datetime'},
        {name: 'MainID',    type: 'int'},
        {name: 'IOState',    type: 'int'},
        {name: 'OilState',    type: 'int'},
        {name: 'PicUploadedDateTime',    type: 'datetime'},
        {name: 'PicData',    type: 'str'}
        ]
    });