如何访问嵌套的JSON数据

Question

我正在尝试从Nodejs（discord.js）中访问消息

{
    "627832600865800222": {                 //guild id
        "348832732647784460": {             // author id
            "message": "hii hello"
        }
    }
}

let author_id = message.author.id
let guild_id = message.guild.id
let out = msg [guild_id].author_id.message 
        console.log(out)

预期输出：hii

但结果输出：未定义 guild_id之后，输出未定义

Answer 1

更改let out = msg [guild_id].author_id.message

到let out = msg[guild_id][author_id].message

属性访问者的MDN文档参考：https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Property_accessors