add names to objects based on object value

Question

I am generating a JavaScript object based on a CSV file that I have.

Here is what the object currently looks like-- an array of objects:

     [
        {
        "country": "afghanistan",
        "iso3": "afg",
        "first_characteristic": 3,
        "second_characteristic": 5,
        "third_characteristic": 3
        },
        {
        "country": "united states",
        "iso3": "usa",
        "first_characteristic": 8,
        "second_characteristic": 6,
        "third_characteristic": 7
        },
        {
        "country": "china",
        "iso3": "chn",
        "first_characteristic": 6,
        "second_characteristic": 0.7,
        "third_characteristic": 2
        }
    ]

The fiddle is here.

I'd like to add a name to each object, that is derived from one of its values, and for the output to be a nested object.

So this is what I want the new object to look like:

    {
        "afg":{
        "country": "afghanistan",
        "iso3": "afg",
        "first_indicator": 3,
        "second_indicator": 5,
        "third_indicator": 3
        },
        "usa":{
        "country": "united states",
        "iso3": "usa",
        "first_indicator": 8,
        "second_indicator": 6,
        "third_indicator": 7
        },
        "chn":{
        "country": "china",
        "iso3": "chn",
        "first_indicator": 6,
        "second_indicator": 0.7,
        "third_indicator": 2
        }
    }

I can't figure out how to add these names. Any help is greatly appreciated.

Please note [foo: bar, fizz: buzz] is not a valid Array in JavaScript. Are you saying you want both indices and keys? just keys? just indicies but labels somehow attached? — Paul S.
– Paul S., Commented Nov 24, 2015 at 2:13
Your target json looks incorrect as each element of the array is of the form "...": {...}. Is there any need for it to be an array, could it be an object? — Romski
– Romski, Commented Nov 24, 2015 at 2:16
What have you tried so far to convert the object? Can you share an attempt you've made or started on? Or, detail a guess of how you think it might work? — Jonathan Lonowski
– Jonathan Lonowski, Commented Nov 24, 2015 at 2:21

Paul S. · Accepted Answer · 2015-11-24 02:18:24Z

2

In one line using ES6, where arr is your data as an Array and obj is the resulting Object

var obj = arr.reduce((o, e) => ((o[e.iso3] = e), o), {});

answered Nov 24, 2015 at 2:18

Paul S.

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Comments

Azad · Accepted Answer · 2015-11-24 02:18:45Z

0

try this,

function setNameToJSONObj(json){

  var rslt = [];

  for(var i = 0; i< json.length; i++){
    rslt[json[i].iso3] = json[i];
  }
  return rslt;
}

answered Nov 24, 2015 at 2:18

Azad

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1 Comment

sprucegoose Over a year ago

Thank you, this is also helpful!

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