use variables as keys in multi level json object

Question

I have a JSON object called arrayToSubmit. Here is the following code:

location = "Johannesburg, South Africa";
type = "bench";
qty = 1;
assetNumber = 15;

arrayToSubmit = {
    location : {
        type : {
            'qty' : qty,
            'assetNumber' : assetNumber
        }
    }
}

But the result in chrome is as follows:

Object{location { type : {"qty" : "1", "assetNumber" : "15"}}}

I need to replace the words location and type with the variables in the initial code, like this:

Object{"Johannesburg, South Africa" = { "bench" = {"qty" - "1", "assetNumber" : "15"}}}

(I am pulling these values from my page, I just typed them out here for ease of use).

I have already tried these two examples, but don't know how to get it in multi level format.

is a way that use var to create json object in key

how to set a json key from a variable

I guess you couldn't figure out how to refer to the "location" property after setting it? Like so: `var data = {}; data[location] = {}; data[location][type] = {...};` — Felix Kling, Feb 17 '15 at 06:22

Oleksandr T. · Accepted Answer · 2015-02-17T06:23:26.583

3

You can use bracket notation, like this

var arrayToSubmit = {};

arrayToSubmit[location] = {};
arrayToSubmit[location][type] = {
  'qty': qty,
  'assetNumber': assetNumber
};

edited Feb 17 '15 at 06:23

answered Feb 17 '15 at 06:17

Oleksandr T.

76,493
17
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This worked, thank you. I didnt figure out bracket notation before as I missed the line `arrayToSubmit[location] = {};`. – VaMoose Feb 17 '15 at 06:34
1

@VaMoose: The question you linked to already explains the exact same thing: http://stackoverflow.com/a/882749/218196. Using bracket notation is the solution, how could you have missed that? *edit:* Or did you mean you forgot to create the object? I mean, you cannot just do `var foo; foo[bar] = '...';` either, you have to create the object first. – Felix Kling Feb 17 '15 at 06:36
@FelixKling I used bracket notation, I just didnt figure out how to do it **properly**, I missed the `{}` when creating the variable. – VaMoose Feb 17 '15 at 06:42

score 1 · Answer 2 · answered Feb 17 '15 at 06:20

You have to use the [] operator to use a variable value as a key. When declaring properties inside the object initializer {} the keys are always literal.

You do it like this :

var location = "Johannesburg, South Africa";
var objectToSubmit = {};
objectToSubmit[location] = {...};

Hope this helps.

score 0 · Answer 3 · answered Feb 17 '15 at 06:20

0

Consider this code:

arrayToSubmit = {};
obj = {};
obj[type] = {
            'qty' : qty,
            'assetNumber' : assetNumber
        };
arrayToSubmit[location] = obj;

answered Feb 17 '15 at 06:20

Manwal

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score 0 · Answer 4 · edited Feb 17 '15 at 06:44

0

First of all, do not use 'location', it will interfere with window.location variable.

arrayToSubmit = {};
arrayToSubmit[loc] = {};
arrayToSubmit[loc][type] = {
    'qty' : qty,
    'assetNumber' : assetNumber
};

edited Feb 17 '15 at 06:44

Evgeniy

2,915
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answered Feb 17 '15 at 06:39

Riyad Ottayil

21
3

I missed that! Changing it now. Thanks ! – VaMoose Feb 17 '15 at 06:43

use variables as keys in multi level json object

4 Answers4