如何在javascript中调整对象值_Javascript_Arrays_Object_Multidimensional Array_Nested

如何在javascript中调整对象值

javascript arrays object

如何在javascript中调整对象值,javascript,arrays,object,multidimensional-array,nested,Javascript,Arrays,Object,Multidimensional Array,Nested,我需要在javascript中调整对象值。ent是输入数组。语言中的第一个对象由数组值组成，我需要将对象值展平。[[{}]、{}]、{}]、{}]] 将值导出为语言：[{}，{}，{}] const ent =[{ "name": "Afghanistan", "topLevelDomain": [ ".af" ], "alpha2Code": &

我需要在javascript中调整对象值。ent是输入数组。语言中的第一个对象由数组值组成，我需要将对象值展平。[[{}]、{}]、{}]、{}]]

将值导出为语言：[{}，{}，{}]




const ent =[{
    "name": "Afghanistan",
    "topLevelDomain": [
      ".af"
    ],
    "alpha2Code": "AF",
    "alpha3Code": "AFG",
    "callingCodes": [
      "93"
    ],
    "capital": "Kabul",
    "altSpellings": [
      "AF",
      "Afġānistān"
    ],
    "region": "Asia",
    "subregion": "Southern Asia",
    "population": 27657145,
    "latlng": [
      33,
      65
    ],
    "demonym": "Afghan",
    "area": 652230,
    "gini": 27.8,
    "timezones": [
      "UTC+04:30"
    ],
    "borders": [
      "IRN",
      "PAK",
      "TKM",
      "UZB",
      "TJK",
      "CHN"
    ],
    "nativeName": "افغانستان",
    "numericCode": "004",
    "currencies": [
      {
        "code": "AFN",
        "name": "Afghan afghani",
        "symbol": "؋"
      }
    ],
    "languages": [
      [{
        "iso639_1": "ps",
        "iso639_2": "pus",
        "name": "Pashto",
        "nativeName": "پښتو"
      }],
      [{
        "iso639_1": "uz",
        "iso639_2": "uzb",
        "name": "Uzbek",
        "nativeName": "Oʻzbek"
      }],
      [{
        "iso639_1": "tk",
        "iso639_2": "tuk",
        "name": "Turkmen",
        "nativeName": "Türkmen"
      }],
    ],
    "translations": {
      "de": "Afghanistan",
      "es": "Afganistán",
      "fr": "Afghanistan",
      "ja": "アフガニスタン",
      "it": "Afghanistan",
      "br": "Afeganistão",
      "pt": "Afeganistão",
      "nl": "Afghanistan",
      "hr": "Afganistan",
      "fa": "افغانستان"
    },
    "flag": "https://restcountries.eu/data/afg.svg",
    "regionalBlocs": [
      {
        "acronym": "SAARC",
        "name": "South Asian Association for Regional Cooperation",
        "otherAcronyms": [],
        "otherNames": []
      }
    ],
    "cioc": "AFG"
  },
  {
    "name": "Åland Islands",
    "topLevelDomain": [
      ".ax"
    ],
    "alpha2Code": "AX",
    "alpha3Code": "ALA",
    "callingCodes": [
      "358"
    ],
    "capital": "Mariehamn",
    "altSpellings": [
      "AX",
      "Aaland",
      "Aland",
      "Ahvenanmaa"
    ],
    "region": "Europe",
    "subregion": "Northern Europe",
    "population": 28875,
    "latlng": [
      60.116667,
      19.9
    ],
    "demonym": "Ålandish",
    "area": 1580,
    "gini": null,
    "timezones": [
      "UTC+02:00"
    ],
    "borders": [],
    "nativeName": "Åland",
    "numericCode": "248",
    "currencies": [
      {
        "code": "EUR",
        "name": "Euro",
        "symbol": "€"
      }
    ],
    "languages": [
      {
        "iso639_1": "sv",
        "iso639_2": "swe",
        "name": "Swedish",
        "nativeName": "svenska"
      }
    ],
    "translations": {
      "de": "Åland",
      "es": "Alandia",
      "fr": "Åland",
      "ja": "オーランド諸島",
      "it": "Isole Aland",
      "br": "Ilhas de Aland",
      "pt": "Ilhas de Aland",
      "nl": "Ålandeilanden",
      "hr": "Ålandski otoci",
      "fa": "جزایر الند"
    },
    "flag": "https://restcountries.eu/data/ala.svg",
    "regionalBlocs": [
      {
        "acronym": "EU",
        "name": "European Union",
        "otherAcronyms": [],
        "otherNames": []
      }
    ],
    "cioc": ""
  },
  {
    "name": "Albania",
    "topLevelDomain": [
      ".al"
    ],
    "alpha2Code": "AL",
    "alpha3Code": "ALB",
    "callingCodes": [
      "355"
    ],
    "capital": "Tirana",
    "altSpellings": [
      "AL",
      "Shqipëri",
      "Shqipëria",
      "Shqipnia"
    ],
    "region": "Europe",
    "subregion": "Southern Europe",
    "population": 2886026,
    "latlng": [
      41,
      20
    ],
    "demonym": "Albanian",
    "area": 28748,
    "gini": 34.5,
    "timezones": [
      "UTC+01:00"
    ],
    "borders": [
      "MNE",
      "GRC",
      "MKD",
      "KOS"
    ],
    "nativeName": "Shqipëria",
    "numericCode": "008",
    "currencies": [
      {
        "code": "ALL",
        "name": "Albanian lek",
        "symbol": "L"
      }
    ],
    "languages": [
      {
        "iso639_1": "sq",
        "iso639_2": "sqi",
        "name": "Albanian",
        "nativeName": "Shqip"
      }
    ],
    "translations": {
      "de": "Albanien",
      "es": "Albania",
      "fr": "Albanie",
      "ja": "アルバニア",
      "it": "Albania",
      "br": "Albânia",
      "pt": "Albânia",
      "nl": "Albanië",
      "hr": "Albanija",
      "fa": "آلبانی"
    },
    "flag": "https://restcountries.eu/data/alb.svg",
    "regionalBlocs": [
      {
        "acronym": "CEFTA",
        "name": "Central European Free Trade Agreement",
        "otherAcronyms": [],
        "otherNames": []
      }
    ],
    "cioc": "ALB"
  },
  ];

  const outputKeys = ['name', 'capital', 'region', 'languages', 'flag'];

const output = ent.map(item =>
  outputKeys.reduce((val, key) => ({ ...val, [key]: item[key] }), {})
);
console.log(output);

Ouput是一个数组，其中selected keys的值为return，但我需要调整对象的值

 const output = [
  {
    name: 'Afghanistan',
    capital: 'Kabul',
    region: 'Asia',
    languages: [
      [{
        iso639_1: 'ps',
        iso639_2: 'pus',
        name: 'Pashto',
        nativeName: 'پښتو'
      }],
      [{
        iso639_1: 'uz',
        iso639_2: 'uzb',
        name: 'Uzbek',
        nativeName: 'Oʻzbek'
      }],
      [{
        iso639_1: 'tk',
        iso639_2: 'tuk',
        name: 'Turkmen',
        nativeName: 'Türkmen'
      }]
    ],
    flag: 'https://restcountries.eu/data/afg.svg'
  },
  {
    name: 'Åland Islands',
    capital: 'Mariehamn',
    region: 'Europe',
    languages: [
      {
        iso639_1: 'sv',
        iso639_2: 'swe',
        name: 'Swedish',
        nativeName: 'svenska'
      }
    ],
    flag: 'https://restcountries.eu/data/ala.svg'
  },
  {
    name: 'Albania',
    capital: 'Tirana',
    region: 'Europe',
    languages: [
      {
        iso639_1: 'sq',
        iso639_2: 'sqi',
        name: 'Albanian',
        nativeName: 'Shqip'
      }
    ],
    flag: 'https://restcountries.eu/data/alb.svg'
  }
];

我需要调整对象值。[[{}]，{}]，{}]]

将值导出为语言：[{}，{}，{}]




const ent =[{
    "name": "Afghanistan",
    "topLevelDomain": [
      ".af"
    ],
    "alpha2Code": "AF",
    "alpha3Code": "AFG",
    "callingCodes": [
      "93"
    ],
    "capital": "Kabul",
    "altSpellings": [
      "AF",
      "Afġānistān"
    ],
    "region": "Asia",
    "subregion": "Southern Asia",
    "population": 27657145,
    "latlng": [
      33,
      65
    ],
    "demonym": "Afghan",
    "area": 652230,
    "gini": 27.8,
    "timezones": [
      "UTC+04:30"
    ],
    "borders": [
      "IRN",
      "PAK",
      "TKM",
      "UZB",
      "TJK",
      "CHN"
    ],
    "nativeName": "افغانستان",
    "numericCode": "004",
    "currencies": [
      {
        "code": "AFN",
        "name": "Afghan afghani",
        "symbol": "؋"
      }
    ],
    "languages": [
      [{
        "iso639_1": "ps",
        "iso639_2": "pus",
        "name": "Pashto",
        "nativeName": "پښتو"
      }],
      [{
        "iso639_1": "uz",
        "iso639_2": "uzb",
        "name": "Uzbek",
        "nativeName": "Oʻzbek"
      }],
      [{
        "iso639_1": "tk",
        "iso639_2": "tuk",
        "name": "Turkmen",
        "nativeName": "Türkmen"
      }],
    ],
    "translations": {
      "de": "Afghanistan",
      "es": "Afganistán",
      "fr": "Afghanistan",
      "ja": "アフガニスタン",
      "it": "Afghanistan",
      "br": "Afeganistão",
      "pt": "Afeganistão",
      "nl": "Afghanistan",
      "hr": "Afganistan",
      "fa": "افغانستان"
    },
    "flag": "https://restcountries.eu/data/afg.svg",
    "regionalBlocs": [
      {
        "acronym": "SAARC",
        "name": "South Asian Association for Regional Cooperation",
        "otherAcronyms": [],
        "otherNames": []
      }
    ],
    "cioc": "AFG"
  },
  {
    "name": "Åland Islands",
    "topLevelDomain": [
      ".ax"
    ],
    "alpha2Code": "AX",
    "alpha3Code": "ALA",
    "callingCodes": [
      "358"
    ],
    "capital": "Mariehamn",
    "altSpellings": [
      "AX",
      "Aaland",
      "Aland",
      "Ahvenanmaa"
    ],
    "region": "Europe",
    "subregion": "Northern Europe",
    "population": 28875,
    "latlng": [
      60.116667,
      19.9
    ],
    "demonym": "Ålandish",
    "area": 1580,
    "gini": null,
    "timezones": [
      "UTC+02:00"
    ],
    "borders": [],
    "nativeName": "Åland",
    "numericCode": "248",
    "currencies": [
      {
        "code": "EUR",
        "name": "Euro",
        "symbol": "€"
      }
    ],
    "languages": [
      {
        "iso639_1": "sv",
        "iso639_2": "swe",
        "name": "Swedish",
        "nativeName": "svenska"
      }
    ],
    "translations": {
      "de": "Åland",
      "es": "Alandia",
      "fr": "Åland",
      "ja": "オーランド諸島",
      "it": "Isole Aland",
      "br": "Ilhas de Aland",
      "pt": "Ilhas de Aland",
      "nl": "Ålandeilanden",
      "hr": "Ålandski otoci",
      "fa": "جزایر الند"
    },
    "flag": "https://restcountries.eu/data/ala.svg",
    "regionalBlocs": [
      {
        "acronym": "EU",
        "name": "European Union",
        "otherAcronyms": [],
        "otherNames": []
      }
    ],
    "cioc": ""
  },
  {
    "name": "Albania",
    "topLevelDomain": [
      ".al"
    ],
    "alpha2Code": "AL",
    "alpha3Code": "ALB",
    "callingCodes": [
      "355"
    ],
    "capital": "Tirana",
    "altSpellings": [
      "AL",
      "Shqipëri",
      "Shqipëria",
      "Shqipnia"
    ],
    "region": "Europe",
    "subregion": "Southern Europe",
    "population": 2886026,
    "latlng": [
      41,
      20
    ],
    "demonym": "Albanian",
    "area": 28748,
    "gini": 34.5,
    "timezones": [
      "UTC+01:00"
    ],
    "borders": [
      "MNE",
      "GRC",
      "MKD",
      "KOS"
    ],
    "nativeName": "Shqipëria",
    "numericCode": "008",
    "currencies": [
      {
        "code": "ALL",
        "name": "Albanian lek",
        "symbol": "L"
      }
    ],
    "languages": [
      {
        "iso639_1": "sq",
        "iso639_2": "sqi",
        "name": "Albanian",
        "nativeName": "Shqip"
      }
    ],
    "translations": {
      "de": "Albanien",
      "es": "Albania",
      "fr": "Albanie",
      "ja": "アルバニア",
      "it": "Albania",
      "br": "Albânia",
      "pt": "Albânia",
      "nl": "Albanië",
      "hr": "Albanija",
      "fa": "آلبانی"
    },
    "flag": "https://restcountries.eu/data/alb.svg",
    "regionalBlocs": [
      {
        "acronym": "CEFTA",
        "name": "Central European Free Trade Agreement",
        "otherAcronyms": [],
        "otherNames": []
      }
    ],
    "cioc": "ALB"
  },
  ];

  const outputKeys = ['name', 'capital', 'region', 'languages', 'flag'];

const output = ent.map(item =>
  outputKeys.reduce((val, key) => ({ ...val, [key]: item[key] }), {})
);
console.log(output);

我试过这样做：

const outputKeys=['name'、'capital'、'region'、'languages'、'flag']

const output=ent.map（项=> outputKeys.reduce（（val，key）=>（{…val[key]：项[key].flat（无穷大）}），{}） ); 控制台日志（输出）

注意第一个对象，该语言由嵌套数组组成！提前感谢。

您可以使用“分解结构”仅选择特定属性，然后。仅展开语言数组

常数=[{
“姓名”：“阿富汗”，
“topLevelDomain”：[
“.af”
],
“字母代码”：“AF”，
“alpha3Code”：“AFG”，
“呼叫代码”：[
"93"
],
“首都”：“喀布尔”，
“替换拼写”：[
“AF”，
“Afġānistān”
],
“区域”：“亚洲”，
“次区域”：“南亚”，
“人口”：27657145，
“latlng”：[
33,
65
],
“人口名称”：“阿富汗”，
“面积”：652230，
“基尼”：27.8，
“时区”：[
“UTC+04:30”
],
“边界”：[
“IRN”，
“巴基斯坦”，
“TKM”，
“UZB”，
“TJK”，
“CHN”
],
“国家名称”：“国家名称”，
“数字代码”：“004”，
“货币”：[
{
“代码”：“AFN”，
“姓名”：“阿富汗阿富汗人”，
“符号”：“؋”
}
],
“语言”：[
[{
“iso639_1”：“ps”，
“iso639_2”：“pus”，
“姓名”：“普什图语”，
“国家名称”：“国家名称”
}],
[{
“iso639_1”：“uz”，
“iso639_2”：“uzb”，
“姓名”：“乌兹别克语”，
“nativeName”：“Oʻzbek”
}],
[{
“iso639_1”：“tk”，
“iso639_2”：“tuk”，
“姓名”：“土库曼”，
“nativeName”：“蒂尔克曼”
}],
],
“翻译”：{
“de”：“阿富汗”，
“es”：“Afganistán”，
“fr”：“阿富汗”，
“ja”：アフガニスタン",
“它”：“阿富汗”，
“br”：“Afeganistão”，
“pt”：“Afeganistão”，
“nl”：“阿富汗”，
“hr”：“Afganistan”，
“fa”：“fa”
},
“旗帜”：https://restcountries.eu/data/afg.svg",
“区域集团”：[
{
“首字母缩略词”：“南盟”，
“名称”：“南亚区域合作联盟”，
“其他首字母缩略词”：[]，
“其他名称”：[]
}
],
“cioc”：“AFG”
},
{
“名称”：“奥兰群岛”，
“topLevelDomain”：[
“.ax”
],
“alpha2Code”：“AX”，
“alpha3Code”：“ALA”，
“呼叫代码”：[
"358"
],
“资本”：“玛丽哈门”，
“替换拼写”：[
“斧头”，
“Aaland”，
“阿兰德”，
“阿维南马”
],
“区域”：“欧洲”，
“次区域”：“北欧”，
“人口”：28875，
“latlng”：[
60.116667,
19.9
],
“demonym”：“Ålandish”，
“面积”：1580，
“基尼”：空，
“时区”：[
“UTC+02:00”
],
“边界”：[…]，
“nativeName”：“奥兰”，
“数字代码”：“248”，
“货币”：[
{
“代码”：“欧元”，
“名称”：“欧元”，
“符号”：“€”
}
],
“语言”：[
{
“iso639_1”：“sv”，
“iso639_2”：“swe”，
“姓名”：“瑞典语”，
“nativeName”：“svenska”
}
],
“翻译”：{
“德”：“奥兰”，
“es”：“Alandia”，
“fr”：“奥兰”，
“ja”：オーランド諸島",
“it”：“Isole Aland”，
“br”：“Ilhas de Aland”，
“pt”：“Ilhas de Aland”，
“nl”：“奥兰登”，
“hr”：“奥兰斯基奥托奇”，
“fa”：“fa”
},
“旗帜”：https://restcountries.eu/data/ala.svg",
“区域集团”：[
{
“首字母缩略词”：“欧盟”，
“名称”：“欧盟”，
“其他首字母缩略词”：[]，
“其他名称”：[]
}
],
“cioc”：”
},
{
“姓名”：“阿尔巴尼亚”，
“topLevelDomain”：[
“.al”
],
“字母代码”：“AL”，
“alpha3Code”：“ALB”，
“呼叫代码”：[
"355"
],
“首都”：“地拉那”，
“替换拼写”：[
“AL”，
“Shqipëri”，
“Shqipëria”，
“Shqipnia”
],
“区域”：“欧洲”，
“次区域”：“南欧”，
“人口”：2886026，
“latlng”：[
41,
20
],
“人口名称”：“阿尔巴尼亚语”，
“面积”：28748，
“基尼”：34.5，
“时区”：[
“UTC+01:00”
],
“边界”：[
“MNE”，
“GRC”，
“MKD”，
“科斯”
],
“nativeName”：“Shqipëria”，
“数字代码”：“008”，
“货币”：[
{
“代码”：“全部”，
“名称”：“阿尔巴尼亚列克”，
“符号”：“L”
}
],
“语言”：[
{
“iso639_1”：“sq”，
“iso639_2”：“sqi”，
“姓名”：“阿尔巴尼亚语”，
“nativeName”：“Shqip”
}
],
“翻译”：{
“德”：“阿尔巴宁”，
“es”：“阿尔巴尼亚”，
“fr”：“Albanie”，
“ja”：アルバニア",
“它”：“阿尔巴尼亚”，
“br”：“Alb–nia”，
“pt”：“Alb–nia”，
“nl”：“阿尔巴尼”，
“hr”：“Albanija”，
“fa”：“fa”
},
“旗帜”：https://restcountries.eu/data/alb.svg",
“区域集团”：[
{
“首字母缩略词”：“CEFTA”，
“名称”：“中欧自由贸易协定”，
“其他首字母缩略词”：[]，
“其他名称”：[]
}
],
“cioc”：“ALB”
},
];
const output=ent.map（{name，capital，region，languages，flag}）=>({
名称
首都
区域
语言：languages.flat（），
旗帜
}));
console.log（output）；

向我们展示您的尝试。因此，这不是免费的代码编写服务。这里的目标是让您发布您的尝试，以解决您自己和其他人的问题