A serializeHash plugin for jQuery that allows you to submit a form using jQuery's ajax functions.

gistfile1.js

/***
The serializeHash method can be used to submit forms with an ajax request.
The result of serializeHash can be used as the 'data' option for jQuery's
built-in ajax methods and functions.
***/
(function($){
  $.fn.serializeHash = function() { 
    var hash = {}; 
    /*** 
      Use serializeArray() to get an array of JSON objects for
      each value in the form.
      (As opposed to serialize() which requires string splitting)
    ***/
    $.each(this.serializeArray(), function() { 
      if(hash[this.name] === undefined) {
        hash[this.name] = this.value; 
      }
      else {
        /***
          Handle form elements with multiple values such as 
          <select multiple="multiple"> and multiple 
          <input type="checkbox"/> elements with the same name.
        ***/
        if ($.isArray(hash[this.name])) {
          hash[this.name].push(this.value); 
        }
        else {
          hash[this.name] = [hash[this.name], this.value];
        }
      }
    }); 
    return hash; 
  };
})(jQuery);