JavaScript 2 dimension array

Question

I have 3 arrays

var city = [
  ['Kaunas', 54.896872,23.892426],
  ['Vilnius', 54.711136,25.280685],
  ['Klaipeda', 55.720149,21.131401],
  ['Utena', 55.536403,25.59494],
];

var lake = [
  ['Ezeras Bijote', 55.785092,23.062956],
  ['Ezeras Druksiai', 55.627996,26.565228],
  ['Ezeras Sartai', 55.804368,25.832863],
  ['Ezeras Metelys', 54.300299,23.767004],
];

var shop = [
  ['Kauno Akropolis', 54.891665,23.917744],
  ['Panorama', 54.709549,25.257454],
  ['Europa', 54.687514,25.262886],
  ['Ozas', 54.638628,25.135685],
];

I want add this 3 arrays to 1 array ut don't know how to do this, will very nice if i can call form alements like this bigArr[city][1], bigArr[shop][1],bigArr[lake][1]

Tom Pietrosanti · Accepted Answer · 2012-07-27 16:53:32Z

1

Using what you already have:

var bigArr = {"city": city, "lake": lake, "shop": shop};

answered Jul 27, 2012 at 16:53

Tom Pietrosanti

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2 Comments

Tom Pietrosanti Over a year ago

bigArr["city"][0] is the same as city[0]

Tom Pietrosanti Over a year ago

You can also use bigArr.city[0]

Niet the Dark Absol · Accepted Answer · 2012-07-27 16:51:31Z

1

Comments

Bergi · Accepted Answer · 2012-07-27 16:59:32Z

1

You should use Objects instead of Arrays. You can access them by string keys. Create them as a literal:

var coordinates = {
    "city": {
        Kaunas:   [54.896872,23.892426],
        Vilnius:  [54.711136,25.280685],
        Klaipeda: [55.720149,21.131401],
        Utena:    [55.536403,25.59494]
    },
    "lake": {
        ...
    },
    "shop": {
        ...
    }
}

Then access their properties by using member operators:

Dot notation: coordinates.shop
Bracket notation: coordinates["lake"]

To get the coordinates array for Utena, you might use coordinates.city["Utena"]

answered Jul 27, 2012 at 16:59

Bergi

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Comments

Zoltan Toth · Accepted Answer · 2012-07-27 17:07:36Z

1

You might want to create an object instead of a multidimensional array -

var bigArr = {
    "city": {
        Kaunas: {
            "lat": 54.896872,
            "lon": 23.892426 
        },
        Vilnius: {
            "lat": 54.711136,
            "lon": 25.280685
        },
        Klaipeda: {
            "lat": 55.720149,
            "lon": 21.131401
        },
        Utena: {
            "lat": 55.536403,
            "lon": 25.59494
        }
    },

    "lake": {
        ...
    },

    "shop": {
        ...
    }
}

And then you can use it, like bigArr.city.Kaunas.lat

edited Jul 27, 2012 at 17:07

answered Jul 27, 2012 at 16:52

Zoltan Toth

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1 Comment

Bergi Over a year ago

Never store numbers as strings!

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