在Javascript中访问数组内的对象返回TypeError：无法读取未定义错误的属性“数据”

Question

我正在尝试使用 Google Apps 脚本中的 javascript 访问对象数组中的一个对象，但它给了我一个错误 - TypeError: 无法读取未定义的属性“0”

JSON（从 API 结果接收）如下，并存储在“data”变量中：

[{
    "values": {
        "article_number": [
            {
                "locale": null,
                "scope": null,
                "data": "000000000010137290"
            }
        ],
        "article_description": [
            {
                "locale": null,
                "scope": null,
                "data": "SDS Mini Desktop Organiser 3 Draw Sil"
            }
        ],
        "marketing_description": [
            {
                "locale": "en_US",
                "scope": null,
                "data": "SDS Mini Desktop Organiser and 3 Drawers Mesh Silver"
            }
        ]
    }
}]

我正在尝试访问“数据”元素并将每个数据元素添加到一个新对象：

var product = [];
  data.forEach(function(elem,i) {
    products.push(
     {
      article_number:elem["article_number"][0]["data"],
      article_description:elem["article_description"][0]["data"],
      marketing_description:elem["marketing_description"][0]["data"]
     });
  });

我真的很感激帮助解决这个问题。 我尝试删除 [0]，但这只会返回错误“TypeError：无法读取未定义的属性‘数据’”。 我不知所措，因为我认为调用数组的索引 0 会起作用。

Answer 1

这比你想要的更冗长，但这就是我所做的。

1. 遍历对象的键。
2. 查找匹配对象的data属性。
3. 用key: data格式创建一个新对象。

输出：

[
  {
    "article_number": "000000000010137290",
    "article_description": "SDS Mini Desktop Organiser 3 Draw Sil",
    "marketing_description": "SDS Mini Desktop Organiser and 3 Drawers Mesh Silver"
  }
]

完整代码如下：

 let recieved = [{ values: { article_number: [{ locale: null, scope: null, data: "000000000010137290", }, ], article_description: [{ locale: null, scope: null, data: "SDS Mini Desktop Organiser 3 Draw Sil", }, ], marketing_description: [{ locale: "en_US", scope: null, data: "SDS Mini Desktop Organiser and 3 Drawers Mesh Silver", }, ], }, }, ]; let allValues = []; for (let i = 0; i < recieved.length; i++) { let newObj = Object.keys(recieved[i].values).reduce((acc, curr) => { acc[curr] = recieved[i].values[curr][0].data; return acc; }, {}); allValues.push(newObj); } console.log(allValues);

Answer 2

 let data1 = [{ "values": { "article_number": [ { "locale": null, "scope": null, "data": "000000000010137290" } ], "article_description": [ { "locale": null, "scope": null, "data": "SDS Mini Desktop Organiser 3 Draw Sil" } ], "marketing_description": [ { "locale": "en_US", "scope": null, "data": "SDS Mini Desktop Organiser and 3 Drawers Mesh Silver" } ] } }] var product = []; data1.forEach(function (elem, i) { product.push({ article_number: elem.values["article_number"][0]["data"], article_description: elem.values['article_description'][0].data, marketing_description: elem.values['marketing_description'][0].data }); }); console.log(product)

 let data1 = [{ "values": { "article_number": [ { "locale": null, "scope": null, "data": "000000000010137290" } ], "article_description": [ { "locale": null, "scope": null, "data": "SDS Mini Desktop Organiser 3 Draw Sil" } ], "marketing_description": [ { "locale": "en_US", "scope": null, "data": "SDS Mini Desktop Organiser and 3 Drawers Mesh Silver" } ] } }] var product = []; data1.forEach(function (elem, i) { product.push({ article_number: elem.values.article_number[0].data, article_description: elem.values.article_description[0].data, marketing_description: elem.values.marketing_description[0].data }); }); console.log(product)