JSON和地图:为什么未定义item.user而未定义item.text? [关闭]

I'm not sure why this is not working, please see the following image: [Why item.user is undefined and item.text not?] [In right side, the output. In the left side the logic, in the middle de JSON object]1

*在右侧,输出。在逻辑的左侧,在中间的JSON对象中