Question

数据如下所示：

[
  {
    "passports": [
      {
        "identifier": "2238006043",
        "protocol": "oauth",
        "tokens": {
          "token": "2238006043-fACsU7gVtpZnkuerodfsfdsfsdfdffsfOck1R9Z",
          "tokenSecret": "BQN25aRkJcyES3yWFCa7sSpq212PKbB52Mplxpg58hICs"
        },
        "provider": "twitter",
        "user": "54e8bca1513ab1841ab6da01",
        "createdAt": "2015-02-21T17:13:05.371Z",
        "updatedAt": "2015-02-21T17:13:05.371Z",
        "id": "54e8bca1513ab1841ab6da02"
      }
    ],
    "username": "myUsername",
    "createdAt": "2015-02-21T17:13:05.362Z",
    "updatedAt": "2015-02-21T17:13:05.362Z",
    "id": "54e8bca1513ab1841ab6da01"
  },

我正试图从这样的护照中输出一些东西：

console.log(util.inspect(res.passports[0].identifier, { showHidden: true, depth: null }));

res是包含下面显示的数据的JSON对象。

Answer 1

试

console.log(util.inspect(res[0].passports[0].identifier, { showHidden: true, depth: null }));

看起来res是一个数组

Answer 2

res JSON对象包含项列表。这就是为什么它没有给予任何价值。请试试这个。

console.log(util.inspect(res[0].passports[0].identifier, { showHidden: true, depth: null }));

无法访问JSON数组

2 个答案: