如何通过FancyBox传递JavaScript变量？

I'm attempting to pass JavaScript variables via FancyBox, so that I can access them in the window that appears. So far, I have the following code:

<script type="text/javascript">
    var s;
    var e;
    var fancyboxdata = new Array();
    $(function(){
        $('#post_code').blur(function(){
            s = $('#post_code').val();
        });
    });
    function map_routes(e){
        if ((s.length !== 0) && (e.length !== 0)) {
            document.getElementById('map_routes_button').style.visibility="visible";
            fancyboxdata[s] = s;
            fancyboxdata[e] = e;
        } else {
            document.getElementById('map_routes_button').style.visibility="hidden";
        }
    }
</script>
...
<script type="text/javascript">
    $(document).ready(function() {
        $("a.iframe_maps").fancybox({
            ajax: {
                type: "POST",
                data: fancyboxdata
            },
            'hideOnContentClick': true,
            'height': 600,
            'padding': 0,
            'width': 700, 
            'type': 'iframe'
        });
    });
</script>

At this stage, I know the fancyboxdata array contains data, but I'm unsure about the Ajax parameter in the FancyBox function, which is supposed to pass the array variable.

In the window that appears, I have:

<?php

print_r($_POST);

echo $_POST['s'];

?>
<script>
    (function() {
        alert(fancyboxdata[s]);
    })();
</script>

And nothing appears, other than empty arrays and errors in the debugger.

Any ideas?

Could you not just listen for the submit of the form and an AJAX call separately as in this question (uses jQuery)?

Can't get form data to post via AJAX using Fancybox

use like data: "phpVar="+fancyboxdata

fancyboxdata (it is your javascript array variable) and

phpVar {will call in your php page. It is holding fancyboxdata.}

for codeigniter-fancybox You try below code. may be it'

$.fancybox({
            'width'             : 900,
            'height'            : 390,
            'autoScale'         : true,
            'transitionIn'      : 'none',
            'transitionOut'     : 'none',
            'href'              : 'page.php?id='+9,
            'type'              : 'iframe'
        });

and then use $_get['id']