A doubt related to JSON arrays

[codeexploiter]

Hi,

Please have a look at the following code



function show() {
var columnHeaders = [
{key:"id_no"},
];
var keyValue = columnHeaders[0].key;

var JSONArray2 = [{keyvalue:"testing"}];
}


In the above function what I am trying to achieve is to create a JSON array that will be like the following


JSONArray2 = [{"id_no":"testing"}]

The question is how I can specify a key value using a variable name in which the original key value I want to use?

Now below code



var keyValue = columnHeaders[0].key;

var JSONArray2 = [{keyvalue:"testing"}];

gives the following


JSONArray2 = [{keyvalue:"testing"}]

Please help me to understand this problem

Regards

CodeExploiter

[mwinter]

The question is how I can specify a key value using a variable name in which the original key value I want to use?

Bracket notation:



object[variable] = value;

For instance,



var keyValue = columnHeaders[0].key,
jsonArray = [{}];

jsonArray[0][keyValue] = 'testing';

The property names in an object literals are themselves literals: either expressed as strings, numbers, or identifiers. However, the identifiers are not references to variables. Think instead of the identifier in variable declarations.

Mike

[codeexploiter]

Hi mike,

Thanks a lot for the answer.

Regards

Codex

[Twey]

However, note that numerical arrays aren't a part of the JSON specification.

[mwinter]

However, note that numerical arrays aren't a part of the JSON specification.
Yes, they are, with regards to both Douglas Crockford's original description and RFC 4627 (also written by Crockford).

Mike

[Twey]

Oh yes, so they are. My error.