处理 Javascript 中的对象数组

Question

我有一个要在其中操作的对象数组。

这是数组

const customerInformation = [
{"id":"12345678","timestamp":"2019-01-21T11:53:29.338Z","userConnection":"1942f0e6","ownerId":"234566654","exec":{"execId":"20326379004","eventTime":"2019-01-21T11:53:29.223Z","communication":[{"name":"John Smith","accountId":"234566654","comid":"cs169612397275616092-1","status":"Active","phoneNumber":"+442222222222","extensionId":"234566654","missedCall":false,"standAlone":false,"muted":false}]}},
{"id":"6374595864","timestamp":"2019-01-21T11:53:29.338Z","userConnection":"1942f0e6","ownerId":"155464348743","exec":{"execId":"1521648743","eventTime":"2019-01-21T11:53:29.223Z","communication":[{"name":"Math Lo","accountId":"26726447342","comid":"cs169612397275616092-1","status":"Active","phoneNumber":"+442222222222","extensionId":"234566654","missedCall":false,"standAlone":false,"muted":false}]}},
{"id":"98736478","timestamp":"2019-01-21T11:53:29.338Z","userConnection":"hblwrv890","ownerId":"98765322","exec":{"execId":"20326379004","eventTime":"2019-01-21T11:53:29.223Z","communication":[{"name":"James Olive","accountId":"234566654","comid":"cs169612397275616092-2","status":"Active","phoneNumber":"+442222222222","extensionId":"2763648749","missedCall":false,"standAlone":false,"muted":false}]}},
{"id":"256644477","timestamp":"2019-01-21T11:53:29.338Z","userConnection":"sbdbbgbg","ownerId":"32545453565","exec":{"execId":"32254655464","eventTime":"2019-01-21T11:53:29.223Z","communication":[{"name":"Ben Right","accountId":"234566654","comid":"cs169612397275616092-2","status":"Active","phoneNumber":"+442222222222","extensionId":"2763648749","missedCall":false,"standAlone":false,"muted":false}]}},
{"id":"99326672378372","timestamp":"2019-01-21T11:53:29.338Z","userConnection":"sjvjvnfrrev","ownerId":"28643872329","exec":{"execId":"268474374938","eventTime":"2019-01-21T11:53:29.223Z","communication":[{"name":"Lowe John","accountId":"2225454354","comid":"cs169612397275616092-2","status":"Active","phoneNumber":"+442222222222","extensionId":"2763648749","missedCall":false,"standAlone":false,"muted":false}]}},

]

我想做的是操纵数组以生成一个小得多的数组。阵列应该是这样的。请注意，它使用的是唯一的 comid，这就是为什么您只能得到两个结果的原因。此外，第二个值必须 return 未定义，因为这是要求

const obj = [{
    'id': '12345678',
    'ownerId': '234566654'
    'userConnection': '1942f0e6',
    'status' : 'Active',
    'comid' : 'cs169612397275616092-1',
    'extensionId' : '234566654',
    'phoneNumber' : '+442222222222',
    'startAt' : '2019-01-21T11:53:29.223Z',
},{
    'id': undefined,
    'ownerId': '98765322'
    'userConnection': 'hblwrv890',
    'status' : 'Active',
    'comid' : 'cs169612397275616092-2',
    'extensionId' : '2763648749',
    'phoneNumber' : '+442222222222',
    'startAt' : '2019-01-21T11:53:29.223Z',
}];

这就是我的代码目前的样子


var newArray= [];

customerInformation.forEach(function(element){
   newArray.push(element.exec.communication[0].comid);
})
const uniqueId = [...new Set(newArray)];

var result = uniqueId.map(function(el) {
    const [key, user] = Object.entries(customerInformation).find(([key, user]) => user.exec.communication[0].comid === el);


  var o = Object.assign({});
  o.extensionId = user.id
  o.ownerId= user.exec.communication[0].comid
  return o

})

这是我所能得到的。请我只想了解我做错了什么。假设有更好的方法来做到这一点。请听起来很懒，但我正在寻找更好的解决方案

Answer 1

在您的阵列上尝试 reduce and concat 方法。

const customerInformation = [
{"id":"12345678","timestamp":"2019-01-21T11:53:29.338Z","userConnection":"1942f0e6","ownerId":"234566654","exec":{"execId":"20326379004","eventTime":"2019-01-21T11:53:29.223Z","communication":[{"name":"John Smith","accountId":"234566654","comid":"cs169612397275616092-1","status":"Active","phoneNumber":"+442222222222","extensionId":"234566654","missedCall":false,"standAlone":false,"muted":false}]}},
{"id":"6374595864","timestamp":"2019-01-21T11:53:29.338Z","userConnection":"1942f0e6","ownerId":"155464348743","exec":{"execId":"1521648743","eventTime":"2019-01-21T11:53:29.223Z","communication":[{"name":"Math Lo","accountId":"26726447342","comid":"cs169612397275616092-1","status":"Active","phoneNumber":"+442222222222","extensionId":"234566654","missedCall":false,"standAlone":false,"muted":false}]}},
{"id":"98736478","timestamp":"2019-01-21T11:53:29.338Z","userConnection":"hblwrv890","ownerId":"98765322","exec":{"execId":"20326379004","eventTime":"2019-01-21T11:53:29.223Z","communication":[{"name":"James Olive","accountId":"234566654","comid":"cs169612397275616092-2","status":"Active","phoneNumber":"+442222222222","extensionId":"2763648749","missedCall":false,"standAlone":false,"muted":false}]}},
{"id":"256644477","timestamp":"2019-01-21T11:53:29.338Z","userConnection":"sbdbbgbg","ownerId":"32545453565","exec":{"execId":"32254655464","eventTime":"2019-01-21T11:53:29.223Z","communication":[{"name":"Ben Right","accountId":"234566654","comid":"cs169612397275616092-2","status":"Active","phoneNumber":"+442222222222","extensionId":"2763648749","missedCall":false,"standAlone":false,"muted":false}]}},
{"id":"99326672378372","timestamp":"2019-01-21T11:53:29.338Z","userConnection":"sjvjvnfrrev","ownerId":"28643872329","exec":{"execId":"268474374938","eventTime":"2019-01-21T11:53:29.223Z","communication":[{"name":"Lowe John","accountId":"2225454354","comid":"cs169612397275616092-2","status":"Active","phoneNumber":"+442222222222","extensionId":"2763648749","missedCall":false,"standAlone":false,"muted":false}]}},

]

const obj = customerInformation.reduce(function( result, item ){
    return result.concat({
        id: item.id,
        ownerId: item.ownerId,
        userConnection: item.userConnection
        });

}, []);
console.info(obj);

Answer 2

你没有解释如何组合元素，所以下面是一个疯狂的猜测。我不会尝试解码您做错了什么，因为您发布的代码与您描述的不符？（例如，您将 comid 分配给 o.ownerId，但您的预期结果并未显示，并且您将 user.id 分配给 o.extensionId，但我没有看到原始数组中与预期结果中的 extensionId 具有相同值的任何 id 属性)

const customerInformation = [
{"id":"12345678","timestamp":"2019-01-21T11:53:29.338Z","userConnection":"1942f0e6","ownerId":"234566654","exec":{"execId":"20326379004","eventTime":"2019-01-21T11:53:29.223Z","communication":[{"name":"John Smith","accountId":"234566654","comid":"cs169612397275616092-1","status":"Active","phoneNumber":"+442222222222","extensionId":"234566654","missedCall":false,"standAlone":false,"muted":false}]}},
{"id":"6374595864","timestamp":"2019-01-21T11:53:29.338Z","userConnection":"1942f0e6","ownerId":"155464348743","exec":{"execId":"1521648743","eventTime":"2019-01-21T11:53:29.223Z","communication":[{"name":"Math Lo","accountId":"26726447342","comid":"cs169612397275616092-1","status":"Active","phoneNumber":"+442222222222","extensionId":"234566654","missedCall":false,"standAlone":false,"muted":false}]}},
{"id":"98736478","timestamp":"2019-01-21T11:53:29.338Z","userConnection":"hblwrv890","ownerId":"98765322","exec":{"execId":"20326379004","eventTime":"2019-01-21T11:53:29.223Z","communication":[{"name":"James Olive","accountId":"234566654","comid":"cs169612397275616092-2","status":"Active","phoneNumber":"+442222222222","extensionId":"2763648749","missedCall":false,"standAlone":false,"muted":false}]}},
{"id":"256644477","timestamp":"2019-01-21T11:53:29.338Z","userConnection":"sbdbbgbg","ownerId":"32545453565","exec":{"execId":"32254655464","eventTime":"2019-01-21T11:53:29.223Z","communication":[{"name":"Ben Right","accountId":"234566654","comid":"cs169612397275616092-2","status":"Active","phoneNumber":"+442222222222","extensionId":"2763648749","missedCall":false,"standAlone":false,"muted":false}]}},
{"id":"99326672378372","timestamp":"2019-01-21T11:53:29.338Z","userConnection":"sjvjvnfrrev","ownerId":"28643872329","exec":{"execId":"268474374938","eventTime":"2019-01-21T11:53:29.223Z","communication":[{"name":"Lowe John","accountId":"2225454354","comid":"cs169612397275616092-2","status":"Active","phoneNumber":"+442222222222","extensionId":"2763648749","missedCall":false,"standAlone":false,"muted":false}]}}
];

const result = customerInformation.reduce((res, el) => {
  const com = el.exec.communication[0];
  // If the result array does not contain that comid yet
  if (!res.some(el2 => el2.comid === com.comid)) {
    // Add it
    res.push({
      id: el.id,
      ownerId: el.ownerId,
      userConnection: el.userConnection,
      status: com.status,
      comid: com.comid,
      extensionId: com.extensionId,
      phoneNumber: com.phoneNumber,
      startAt: el.exec.eventTime
    });
  }
  return res;
}, []);

// Because "it's the requirement"
result[1].id = undefined;

console.log(result);

Answer 3

您的示例有点令人困惑，但我会尽力提供帮助。

听起来您想做的是基于其中一个嵌套对象中的键对原始数组进行重复数据删除。像这样去重的常见方法是使用地图对象。并且您还想从新数组中的该对象收集信息。由于对象引用的工作方式，您实际上可以同时执行这两个操作。

完全公开：这可以用一些更新的 JS 语法写得更好，尽量保持简单:)

const customerInformation = [
{"id":"12345678","timestamp":"2019-01-21T11:53:29.338Z","userConnection":"1942f0e6","ownerId":"234566654","exec":{"execId":"20326379004","eventTime":"2019-01-21T11:53:29.223Z","communication":[{"name":"John Smith","accountId":"234566654","comid":"cs169612397275616092-1","status":"Active","phoneNumber":"+442222222222","extensionId":"234566654","missedCall":false,"standAlone":false,"muted":false}]}},
{"id":"6374595864","timestamp":"2019-01-21T11:53:29.338Z","userConnection":"1942f0e6","ownerId":"155464348743","exec":{"execId":"1521648743","eventTime":"2019-01-21T11:53:29.223Z","communication":[{"name":"Math Lo","accountId":"26726447342","comid":"cs169612397275616092-1","status":"Active","phoneNumber":"+442222222222","extensionId":"234566654","missedCall":false,"standAlone":false,"muted":false}]}},
{"id":"98736478","timestamp":"2019-01-21T11:53:29.338Z","userConnection":"hblwrv890","ownerId":"98765322","exec":{"execId":"20326379004","eventTime":"2019-01-21T11:53:29.223Z","communication":[{"name":"James Olive","accountId":"234566654","comid":"cs169612397275616092-2","status":"Active","phoneNumber":"+442222222222","extensionId":"2763648749","missedCall":false,"standAlone":false,"muted":false}]}},
{"id":"256644477","timestamp":"2019-01-21T11:53:29.338Z","userConnection":"sbdbbgbg","ownerId":"32545453565","exec":{"execId":"32254655464","eventTime":"2019-01-21T11:53:29.223Z","communication":[{"name":"Ben Right","accountId":"234566654","comid":"cs169612397275616092-2","status":"Active","phoneNumber":"+442222222222","extensionId":"2763648749","missedCall":false,"standAlone":false,"muted":false}]}},
{"id":"99326672378372","timestamp":"2019-01-21T11:53:29.338Z","userConnection":"sjvjvnfrrev","ownerId":"28643872329","exec":{"execId":"268474374938","eventTime":"2019-01-21T11:53:29.223Z","communication":[{"name":"Lowe John","accountId":"2225454354","comid":"cs169612397275616092-2","status":"Active","phoneNumber":"+442222222222","extensionId":"2763648749","missedCall":false,"standAlone":false,"muted":false}]}},
]

const map = {};
const newArr = [];

for (const info of customerInformation) {
    const id = info.exec.communication[0].comid;
    if (!map[id]) {
 map[id] = {};
 newArr.push(map[id]);
    }
    Object.assign(map[id], {
 ownerId: info.ownerId,
 comid: id,
 extensionId: info.id,
 userConnection: info.userConnection
 // add whatever fields and other logic you want here
    });
}

console.log('customerInformation', newArr);

我不明白其中的一些问题，所以只是尽力提供帮助。不确定 Also the second value has to return undefined, as it's the requirement

是什么意思

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