Create a JSON serialized object to make a $.postJSON call

I have a HTML form with several text input fields. The submitted data will be sent to a backend system with AJAX / JSON. In jQuery, I do this, which works fine:

$("#addPerson").submit(function() {
    var person = $(this).serializeObject();
    $.postJSON("person/add/", person, function(data) {
        ...
    });
});

Now I have the problem, that I do not have a form, but I also want to add a person. I have the values: firstname = Tim, lastname = Smith, address = a street with number, ...

But how can I create the key-value pairs, so I have the same like the line var person = $(this).serializeObject(); submitted by a form and I can make a ca开发者_StackOverflow社区ll with $.postJSON?

Thank you in advance & Best Regards, Tim.

The json object would look like this... I think this is what you're looking for.

var first,
    last,
    addr;
var jsonObj = {
   firstname: first,
   lastname: last,
   address: addr
}

You are looking for the jQuery param function: http://api.jquery.com/jQuery.param/

$.param(object);

or the serialize function: http://api.jquery.com/serialize/

$(jQuery_Collection).serialze()

But, I believe you can simply pass the object instead of the string, and jQuery will do it for you.