[tzs]

The JSON.parse approach might also be useful if the same data needs to be used in non-JavaScript code too.

You could then use the same string in JSON.parse(...) in your JavaScript, json_decode(...) in your PHP, JSON::Parse's parse_json(...) in your Perl, json.loads(...) in Python, and so on.

If you do have constant data that needs to match across multiple programs, it will probably be better in many or even most applications to store the constant data in one place and have everything load it from there at run time, but for those cases where it really is best to hard code the data in each program, doing so as identical JSON strings might reduce mistakes.