Serialize Form to JSON

I came across a handy javascript function to serialize form to JSON, taken from here

$.fn.serializeObject = function()
{
   var o = {};
   var a = this.serializeArray();
   $.each(a, function() {
       if (o[this.name]) {
           if (!o[this.name].push) {
               o[this.name] = [o[this.name]];
           }
           o[this.name].push(this.value || '');
       } else {
           o[this.name] = this.value || '';
       }
   });
   return o;
};

add above script to your document, then if you are using jQuery you can just do something like the following:

$("form#data").serializeObject();

and as per need, simply use json2.js to convert the (JSON) form object into string:

JSON.stringify($("form#invite_users").serializeObject());