根据 Javascript 中的匹配项查找键值答案

【问题标题】：Find a key value based on a match in Javascript根据 Javascript 中的匹配项查找键值
【发布时间】：2021-03-12 23:59:45
【问题描述】：

我正在尝试返回与 urns 键匹配的 uuid。

“骨灰盒”：[ “whatsapp：27820111111” ],

应该返回 d7b9f88c-b359-4d69-926d-536c0d2892e0 因为它与电话号码匹配。如何以编程方式完成。

这是两个字典。

{
"next": "https://random.com=",
"previous": null,
"results": [ 
{
        "uuid": "g2ws8dh5-b359-4d69-926d-536c0d2892e0",
        "name": "James",
        "language": "eng",
        "urns": [
            "whatsapp:27333333333"
        ],
        "groups": [
            {
                "uuid": "57fs8430-3c78-42b7-876c-c385e36c1dba",
                "name": "Postbirth WhatsApp"
            }
        ],
        "fields": {
            "whatsapp_consent": null,
            "webhook_failure_count": null,
        },
        "blocked": false,
        "stopped": false,
        "created_on": "2020-12-01T07:50:58.736502Z",
        "modified_on": "2020-12-01T08:36:34.980359Z"
    },
{
        "uuid": "d7b9f88c-b359-4d69-926d-536c0d2892e0",
        "name": "Jane",
        "language": "eng",
        "urns": [
            "whatsapp:27820111111"
        ],
        "groups": [
            {
                "uuid": "e35f2e39-3c78-42b7-876c-c385e36c1dba",
                "name": "Prebirth WhatsApp"
            }
        ],
        "fields": {
            "whatsapp_consent": null,
            "webhook_failure_count": null,
        },
        "blocked": false,
        "stopped": false,
        "created_on": "2020-12-01T07:50:58.736502Z",
        "modified_on": "2020-12-01T08:36:34.980359Z"
    }
]

}

我能够遍历并找到骨灰盒，但我不确定如何退后一步获取 uuid。

【问题讨论】：

标签： javascript list dictionary google-apps-script nested-lists

【解决方案1】：

将结果数组和 urn 字符串传递给此函数。如果找到它将返回 uuid，否则将返回 null。

function getIdFromUrn(results, urn) {
    for (let i = 0; i < results.length; i++) {
        const result = results[i];

        if (result.urns.includes(urn)) {
            return result.uuid; // urn found
        }
    }

    return null; // not found
}

console.log(getIdFromUrn(results, 'whatsapp:27820111111'));

【讨论】：

我测试过了。对我来说很好。你能展示你是如何将结果数组传递给函数的吗？也许你通过了整个字典。
哦，是的，我通过了整个字典。

【解决方案2】：

当你可以使用find(...) 匹配一个值时，你不需要循环。

请看下面的演示

var data = [{
    "uuid": "g2ws8dh5-b359-4d69-926d-536c0d2892e0",
    "name": "James",
    "language": "eng",
    "urns": [
      "whatsapp:27333333333"
    ],
    "groups": [{
      "uuid": "57fs8430-3c78-42b7-876c-c385e36c1dba",
      "name": "Postbirth WhatsApp"
    }],
    "fields": {
      "whatsapp_consent": null,
      "webhook_failure_count": null,
    },
    "blocked": false,
    "stopped": false,
    "created_on": "2020-12-01T07:50:58.736502Z",
    "modified_on": "2020-12-01T08:36:34.980359Z"
  },
  {
    "uuid": "d7b9f88c-b359-4d69-926d-536c0d2892e0",
    "name": "Jane",
    "language": "eng",
    "urns": [
      "whatsapp:27820111111"
    ],
    "groups": [{
      "uuid": "e35f2e39-3c78-42b7-876c-c385e36c1dba",
      "name": "Prebirth WhatsApp"
    }],
    "fields": {
      "whatsapp_consent": null,
      "webhook_failure_count": null,
    },
    "blocked": false,
    "stopped": false,
    "created_on": "2020-12-01T07:50:58.736502Z",
    "modified_on": "2020-12-01T08:36:34.980359Z"
  }
];

const lookingFor = "whatsapp:27820111111";

const foundIt = data.find(el => {
  return (el.urns.indexOf(lookingFor) !== -1);
});

console.log(foundIt.uuid);

【讨论】：