Quiz Question: How do I use webMethod to call GetMessages?

CxServices.asmx

[WebMethod(true)]
public string GetMessages(string psUserId)
{
  List<JxMessage> messages = new List<JxMessage>();

  // .... do some logic like get the message list

  // Send it back as JSON
  return CxJSONHelper.Serialize(messages);
}

jQueryCommonHelper.js

// Namespaces
if (typeof FrozenBytesCore == "undefined" || !FrozenBytesCore) {
  window.FrozenBytesCore = { name: 'Frozen Bytes Core', version: '0.1.0.0' };
};

if (typeof FrozenBytesCore.Common == "undefined" || !FrozenBytesCore.Common) {
  FrozenBytesCore.Common = { name: 'Frozen Bytes Core Common', version: '0.1.0.0' };
};

(function($) {

  FrozenBytesCore.Common.JQueryHelper = {

      // Make a JQuery.ajax call to a web method defined in options.url
      //
      webMethod: function(customOptions) {
          var defaultOptions = { type: 'POST', async: true, cache: true, timeout: 1000, url: '../Services/CxJsonHandler.ashx', data: {} };
          var options = $.extend({}, defaultOptions, customOptions);

          var request = $.ajax({
              type: options.type,
              async: options.async,
              cache: options.cache,
              timeout: options.timeout,
              url: options.url,
              data: options.data,
              contentType: "application/json; charset=utf-8",
              dataType: "json"

          });

          request.fail(function(jqXHR, msg) {
              var err = $.parseJSON(jqXHR.responseText);
              alert("Error: " + err.Message);
          });

          return request;
      },

  }    // End FrozenBytesCore.Common.JQueryHelper namespace

})(jQuery);