Nested object needs to be modified

Question

This is the input json which i am reading and trying to change the structure as per requirement .But unable to do so countries i am able to put inside object but timezone i am unable to read .Can any one help clearly i need to work on objects little harder .

let timezone = {
  countries: {
    Algeria: {
      cities: {
        "Algiers": {
          city: "Algiers",
          timezone: "(UTC+01:00) W. central africa standard time",
          ianaTz: "Africa/Algiers",
        },
      },
    },
    Argentina: {
      cities: {
        "Buenos aires": {
          city: "Buenos aires",
          timezone: "(UTC-03:00) Argentina standard time",
          ianaTz: "America/Argentina/Buenos_Aires",
        },
        "Cordoba": {
          city: "Cordoba",
          timezone: "(UTC-03:00) Argentina standard time",
          ianaTz: "America/Argentina/Cordoba",
        },
        "Tucuman": {
          city: "Tucuman",
          timezone: "(UTC-03:00) Argentina standard time",
          ianaTz: "America/Argentina/Tucuman",
        },
      },
    }
  }
}


function editTimezone(timezone) {
  var arr = [];

  for (var key in timezone.countries) {
    var city = timezone.countries[key].cities;
    for (var cit in city) {
      var timezone = timezone.countries[key].cities.cit.timezone; //undefined
    }
    arr.push({
      "country": key,
      "timezone": [timezone]
    })
  }
  console.log(arr);
}

editTimezone(timezone);

//OUTPUT REQUIRED--

[{
"country":"Algeria"
"timezone": ["((UTC+01:00) W. central africa standard time"]
 },
 {   
  "country":"Argentina"
  "timezone": ["(UTC-03:00) Argentina standard time","(UTC-03:00) Argentina standard 
  time","(UTC-03:00) Argentina standard time"]
 }
]

Not sure what logic i should write for achieving the output.

Please note that `let timezone = {` means the data is not JSON, but a regular JS object. — evolutionxbox, Apr 29 '22 at 07:13
**What** is the problem with the `editTimezone` function? You did not say **what** is the actual problem... — vsync, Apr 29 '22 at 07:15
You're going to need something like `Object.values(country.cities)[0].timezone`. — , Apr 29 '22 at 07:17
You need `[cit]` to use the key stored in `cit`, otherwise you're looking for a literal "cit" key, which doesn't exist. Also note that you can use a `for ... of` loop as your 2nd loop instead which allows you to skip over they key step and refer to the value directly. — , Apr 29 '22 at 07:20
Does this answer your question? [Dynamically access object property using variable](https://stackoverflow.com/questions/4244896/dynamically-access-object-property-using-variable) — , Apr 29 '22 at 07:21
There isn't any trace of JSON in this question. [JSON](https://json.org) is text, that in various programming languages is handled by the type `string`. There could not be a thing like _"nested JSON"_. You have nested objects. JSON is a text representation of a data structure (that can be an object or an array or something else, a number for example). — axiac, Apr 29 '22 at 07:44

NightEye · Accepted Answer · 2022-04-29T07:42:11.273

Script:

function editTimezone() {
  var countries = timezone.countries;
  var arr = Object.keys(countries).map(country => {
    var cities = countries[country].cities;
    return {
      'country': country,
      'timezone' : Object.keys(cities).map(city => cities[city].timezone)
    }
  });

  console.log(arr);
}

Steps:

First, get the countries, then map them to create an array.
Next, get the list of cities per country then map it again with their own timezones.
Lastly, return both the country name and the timezones as an object altogether to get an array of these objects.

Nested object needs to be modified

1 Answers1

Script:

Steps:

Output: