JQuery JSON push using object as key

Question

I am trying to write a JSON file using JQuery. I am attempting to use a javascript object as a json key however it does not run. My code is:

var lvl = 2;
$.getJSON( "json/levels.json", function(levels) {
    levels.level.push({
        lvl:[{
            "Test": "some text"
        }] 
    }
);

This outputs:

{
    "level": [{
        "lvl": [{
            "Test": "Some Text",
        }]
    }]
}

However, it should be returning:

{
    "level": [{
        "2": [{
            "Test": "Some Text",
        }]
    }]
}

What am I doing wrong?

Thanks Nick

Rory McCrossan · Accepted Answer · 2015-05-25T18:15:52.047

3

To use the value of the variable as the key of an object, try this:

$.getJSON( "json/levels.json", function(levels) {
    var obj = {};
    obj[lvl] = [{ "Test": "some text" }];
    levels.level.push(obj);
);

edited May 25 '15 at 18:15

answered May 25 '15 at 15:47

Rory McCrossan

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You can use Identifiers, string literals and number literals in an object literal. – Felix Kling May 25 '15 at 15:58
Note that ECMAScript 6 allows computed keys in object literals. `{[lvl]: "foo"}` – May 25 '15 at 16:07

JQuery JSON push using object as key

1 Answers1