根据 Javascript 中的匹配项查找键值

问题描述

我正在尝试返回 urns 键匹配的 uuid。

“骨灰盒”：[ “whatsapp：[phone]” ],

应该返回什么 d7b9f88c-b359-4d69-926d-536c0d2892e0 因为它有那个电话号码匹配。如何以编程方式完成此操作。

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:[phone]"
        ],"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","urns": [
            "whatsapp:[phone]"
        ],"groups": [
            {
                "uuid": "e35f2e39-3c78-42b7-876c-c385e36c1dba","name": "Prebirth WhatsApp"
            }
        ],"modified_on": "2020-12-01T08:36:34.980359Z"
    }
]

}

我可以循环并找到 urn，但我不确定如何退后一步以获取 uuid。

解决方法

将结果数组和 urn 字符串传递给该函数。如果找到则返回 uuid，否则返回 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:[phone]'));

,

当您可以使用 find(...) 匹配某个值时，您不需要循环。

查看下面的演示

var data = [{
    "uuid": "g2ws8dh5-b359-4d69-926d-536c0d2892e0","name": "James","language": "eng","urns": [
      "whatsapp:[phone]"
    ],"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","urns": [
      "whatsapp:[phone]"
    ],"groups": [{
      "uuid": "e35f2e39-3c78-42b7-876c-c385e36c1dba","name": "Prebirth WhatsApp"
    }],"modified_on": "2020-12-01T08:36:34.980359Z"
  }
];

const lookingFor = "whatsapp:[phone]";

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

console.log(foundIt.uuid);