jQuery.put() and jQuery.del() functions for HTTP PUT and DELETE methods

jquery.putdel.js

/* Extend jQuery with functions for PUT and DELETE requests. */
/* Based on http://homework.nwsnet.de/news/9132_put-and-delete-with-jquery */

(function(){
  function _ajax_request(url, data, callback, type, method) {
    if (jQuery.isFunction(data)) {
      callback = data;
      data = {};
    }
    return jQuery.ajax({
      type: method,
      url: url,
      data: data,
      success: callback,
      dataType: type
      });
  }

  jQuery.extend({
    put: function(url, data, callback, type) {
      return _ajax_request(url, data, callback, type, 'PUT');
    },
    del: function(url, data, callback, type) {
      return _ajax_request(url, data, callback, type, 'DELETE');
    }
  });
})();