Convert Form Data to json or XML with jQuery

1. 

It actually goes to JSON and then to XML, but here's an adaption of json2xml.js specifically for use with jQuery's serializeArray function:

function json2xml(o, tab) {
  var toXml = function(v, name, ind) {
    var xml = "";
    if (typeof(v) == "object") {
      var hasChild = false;
      for (var m in v) {
        if (m.charAt(0) == "@") {
          xml += " " + m.substr(1) + "=\"" + v[m].toString() + "\"";          
        } else {
          hasChild = true;
        }
      }
      if (hasChild) {
        for (var m in v) {
          if (m=="name") {
            xml += "<" + v[m] + ">" + v['value'] + "";
          }
        }
      }
    }
    return xml;
  }, xml="";
  for (var m in o) {
    xml += toXml(o[m], m, "");
  }

  return "
"+xml+"
";

}

and then I call it like this: 

var formjson = $('form#myform').serializeArray();
//var formxml = $.compactJSON(mjson);
var formxml = json2xml(formjson);
alert(formxml);
$.post("/collect.cgi", { 'data': formxml }, function (data){ });

http://www.docunext.com/blog/2009/01/convert-form-data-to-xml-with-jquery.html

2. Serialize form to JSON with jQuery

$.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;
};

http://stackoverflow.com/questions/1184624/serialize-form-to-json-with-jquery

3. 

 jquery serializeArray

$('form').submit(function() {
  alert($(this).serializeArray());
  return false;
});

 http://api.jquery.com/serializeArray/