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I am trying to create the following nested object inside a for loop using JavaScript which then gets pushed to an existing array:

            _spec = {
                _key: {
                    type: _clHndl.getFieldType(_f),
                    editable: true,
                    validation: {
                        required: _clHndl.isRequired(_f),
                        min: 10
                    }
                }
            };

            _arr.push(_spec);

The _key field is dynamic (changes every iteration), I want the identifier of the nested item _key to be the actual value that _key contains in the iteration. Right now it just makes each one '_key' when I use JSON.stringify() to inspect it.

Any help would be appreciated. Thanks for your time.

share|improve this question
    
Search SO for "JavaScript create dynamic key". –  squint Jul 5 '12 at 13:28
    
I know how to make dynamic keys, but in a nested form like this, I'm not sure. I couldn't find an example of this specific context on SO. –  Mr. Smith Jul 5 '12 at 13:32
    
It's no different for nested keys, though yours isn't really nested. It's at the top level of the spec object, so it'll be the same as most other examples given. spec = {}; spec[my_dynamic_key] = {type:...}; –  squint Jul 5 '12 at 13:34
    
Cheers! That did the trick. Post it as the answer so I can accept? –  Mr. Smith Jul 5 '12 at 13:37

1 Answer 1

up vote 1 down vote accepted

Your key isn't really nested (it's at the top level of the outer object), though it wouldn't really be different if it was.

To create a dynamic key, use the square bracket version of the member operator.

spec = {}; 

spec[my_dynamic_key] = {
    type: _clHndl.getFieldType(_f),
    editable: true,
    validation: {
        required: _clHndl.isRequired(_f),
        min: 10
    }
}
share|improve this answer
    
Nice, thank you! :) –  Mr. Smith Jul 5 '12 at 13:45

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