Javascript 这个名字能让人不那么困惑。）它确实对我有用。原始对象已解析元属性。不过，请注意，for in并不是在数组中循环的最佳选择。更多信息，请参阅。相反：for（const entry of goodsIssued）{entry.meta=JSON.parse（e

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这个名字能让人不那么困惑。）它确实对我有用。原始对象已解析元属性。不过，请注意，

for in

并不是在数组中循环的最佳选择。更多信息，请参阅。相反：

for（const entry of goodsIssued）{entry.meta=JSON.parse（entry.meta）；}

你帮我解决了这个问题，我更新了这个问题，为什么你不把meta存储为一个对象而不是sring？事实上，等等，更新确实改变了一些东西。：-）你的对象不再是一个数组，而是一个只有一个属性的对象，GoodSisued，那就是数组。您的代码需要使用该数组，而不是goodsIssued本身。（您可能希望更改变量名以减少混淆。）

const goodsIssued = await goods
  .find({ category: username, tokenName })
  .sort([['createdAt', -1]])
  .limit(2)
  .exec();

{
    "goodsIssued": [
        {
            "minted": false,
            "_id": "5e3163597fd0ad2113bcdefe",
            "category": "gameco11",
            "goodId": 64,
            "issuedTo": "player2",
            "memo": "this is a test token",
            "meta": "{\"data\": \"text\", \"test\":1, \"works\": true}",
            "tokenName": "token5",
            "createdAt": "2020-01-29T10:50:01.257Z",
            "updatedAt": "2020-01-29T10:50:01.257Z",
            "__v": 0
        },
        {
            "minted": false,
            "_id": "5e3163587fd0ad2113bcdefd",
            "category": "gameco11",
            "goodId": 63,
            "issuedTo": "player2",
            "memo": "this is a test token",
            "meta": "{\"data\": \"text\", \"test\":1, \"works\": true}",
            "tokenName": "token5",
            "createdAt": "2020-01-29T10:50:00.691Z",
            "updatedAt": "2020-01-29T10:50:00.691Z",
            "__v": 0
        }
    ]
}

for (const key in goodsIssued) {
  if (goodsIssued.hasOwnProperty(key)) {
    const parsedMeta = JSON.parse(goodsIssued[key].meta);
    goodsIssued[key].meta = parsedMeta;
  }
}

// 1. Get the array, not the object containing it
let goodsIssued = (await /*...get the goods*/).goodsIssued;

// 2. Create a new, unfrozen array with objects with unfrozen properties,
// and parse `meta` along the way
goodsIssued = [...goodsIssued.map(entry => ({...entry, meta: JSON.parse(entry.meta)}))];