Sending json data using jquery

I have a small doubt. I am trying to send json data to my back end page like this. But i am getting error. where in only $fb_list1 is json data. So h开发者_如何学运维ow do i send it from here.

$('.fresh_start')
    .html("<div class='response1'><img src='/images/preloader.gif' alt='Loading.....'></img></div>")
    .load('abc.php',{product:'lcd',type:'product_display',fb_list:"<?php echo $fb_list1 ?>"});

Maybe there your answer Serializing to JSON in jQuery