Can I post JSON without using AJAX?

Question

I have some data, lets say:

var dat = JSON.stringify(frm.serializeArray())

I want to submit this to the server using a roundtrip (aka, non ajax).

I know this is possible, but I can't find any literature on it. Ideas?

(I am using jQuery, if that makes it easier)

EDIT: while all of these answers so far answer the question, I should have included that I want an "content type" of "application/json"

Answer 1

1. Create an HTML form with unique "id" attribute. You can hide it using CSS "display:none". Also fill the action and method attributes.
2. Add a text or hidden input field to the form. make sure you give it a meaningful "name" attribute. That's the name that the server would get the data within.
3. Using JQuery (or plain old javascript) copy the variable "dat" into the input field
4. Submit the form using script