Is this how to use hashes with JSON?

You're attempting to print two CGI header blocks. Unfortunately, you can only have a single CGI block associated with each response. And, unfortunately, the first header block you print has the wrong content-type header (it's 'text/html' where you actually want 'application/json').

With dataType: 'json', jQuery will automagically parse the JSON result for you. That means that the result value passed into the success callback is already a proper JavaScript object. You can access its values just like you would any other JS object.

For example, if the Perl script returns this JSON.

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