javascript - Dynamically create nested json objects

Question

I want to be able to create and object like this

{'someKey':
    [{'someSubKey1': 'value1'},
    {'someSubKey2': 'value2'},
    {'someSubKey3': 'value3'}]
}

I tried a lot but I think I'm missing something

first of all I created an array and pushed the elements, then I did a JSON parse and finally a join (","), but the result wasn't the expected.

Some help?

The format is a little different: {'someKey': {'someSubKey1': 'value1', 'someSubKey2': 'value2', 'someSubKey3': 'value3'} } — emed
– emed, Commented Feb 1, 2017 at 20:44
That is not a valid object. Do you want to create an array of objects each with a single property? Or should someSubKey1, someSubKey2, etc all be part of the same object? I recommend to read a tutorial about data structure in JS: eloquentjavascript.net/04_data.html . Also, what has JSON to do with it? — Felix Kling
– Felix Kling, Commented Feb 1, 2017 at 20:46
I feel like an idiot, I miss the [ ] in the original post, I edited it now — NewJsGuy
– NewJsGuy, Commented Feb 2, 2017 at 3:06

Abhinav Galodha · Accepted Answer · 2017-02-01 20:47:26Z

3

You need to put the contents in an array with []. Wrap you inner json inside an array like

var obj = {'someKey': [
    {'someSubKey1': 'value1'},
    {'someSubKey2': 'value2'},
    {'someSubKey3': 'value3'}]
}
console.log(obj);

answered Feb 1, 2017 at 20:47

Abhinav Galodha

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1 Comment

I feel like an idiot, I miss the [ ] in the original post, I edited it now

Alex Svetkin · Accepted Answer · 2017-02-02 10:03:20Z

2

If you need to access your data structure like myvar.someKey.someSubKey1, consider this structure:

{   'someKey': 
    {
        'someSubKey1': 'value1',
        'someSubKey2': 'value2',
        'someSubKey3': 'value3'
    }
}

If you'd like to go with myvar.someKey[0].someSubKey1, try this:

{'someKey': 
    [
        {'someSubKey1': 'value1'},
        {'someSubKey2': 'value2'},
        {'someSubKey3': 'value3'}
    ]
}

answered Feb 1, 2017 at 20:51

Alex Svetkin

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