Jquery POST :: Allow The JSON To Load In My Browser?

On a page, I have a javascript json output that is generated through PHP. So, for instance, it would look like this:

Code:
var upny_iniresults = {
// "q_id" : "65977",
// "q_txt" : "What is your favorite genre of Music?",
"q_cdata" : [

And then PHP code that generates the JSON. I loop through a question, scan for the results (survey site) and display it as json data. Works perfectly. Basically, the JSON is important because I have existing functions that work with that data (display survey results of that question/etc)Here's the question.How can I generate the same Json output, so it can be read by my other jquery functions (Created by a previous developer, I am a PHP guy) by using Jquery POST as well as a query string. The idea is something like:

Code:
$.post("create_json_results_for_this_question.php", $("#firstform").serialize());
# Firstform is the name of the form that is submitted.

So, would a jquery POST allow the JSON to load in my browser (which I will activate during a click function) just as my PHP json output works or is there another way? I just want to simulate the same effect, but be able to USE the jquery querystring that I have, which is:

$("#firstform").serialize());

because this lets me return survey results of a previously submitted question.My last q. was too convoluted and I realized my dilemma is just the json output.