JSON get object index

Question

I have this json file (data.json):

{
  "country":[{
    "Russia":[
      "Voronezh",
      "Moscow",
      "Vorkuta"
  ],
    "United Kingdom":[
      "London"
  ]
  }],
  "countryCodes":[
    "ru",
    "uk"
  ]
}

and such code:

$.getJSON('data.json', function success(data){
  alert(data.country[0]);
});

this returned "undefined". But i want get "Russia", and having indexes object Russia, i want get "Voronezh", don't use "data.country.Russia".

Sorry for my English.

Use console.log(data) in the success callback to see the object you're getting. — Tushar
– Tushar, Commented Dec 9, 2015 at 13:20

Arg0n · Accepted Answer · 2015-12-09 13:24:35Z

2

If I were you, I would restructure the JSON to look something like this:

var data = {
    "countries": [
        {
            "name": "Russia",
            "cities": [
                "Voronezh",
                "Moscow",
                "Vorkuta"
            ]
        }, 
        {
            "name": "United Kingdom",
            "cities": [
                "London"
            ]
        }
    ],
    "countryCodes": [
        "ru",
        "uk"
    ]
}

data.countries[0].name; //Russia
data.countries[0].cities[0]; //Voronezh

answered Dec 9, 2015 at 13:24

Arg0n

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Comments

Kunal.Bhatt · Accepted Answer · 2015-12-09 14:57:09Z

1

Adding to ArgOn's answer where he has used Dot notation, there is one more way to get the answer i.e. by using Square bracket notation

var option = "countries";  (assign value to a variable)
data[option][0]["name"]; //Russia
data[option][0]["cities"][0]; //Voronezh

Dot notation is faster to write and clearer to read.
Square bracket notation allows access to properties containing special characters and selection of properties using variables.

answered Dec 9, 2015 at 14:57

Kunal.Bhatt

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