jQuery.removeClass, but allow regular expressions.

jquery.removeRegexClass.js

(function (factory) {
  'use strict';
  if ('function' === typeof define && define.amd) {
    define(['jquery'], factory); // register anonymous AMD module
  } else { factory(jQuery); } // browser globals
}(function (jQuery) {
  'use strict';
  var
    $ = jQuery,
    orig = $.fn.removeClass,
    better = function (value) {
      if ('regexp' !== $.type(value)) { return orig.apply(this, arguments); }
      return orig.call(this, function (index, className) {
        return (className.match(value) || []).join(' ');
      });
    };

  better.noConflict = function () {
    $.fn.extend({removeClass: orig});
    return better;
  };

  $.fn.extend({ removeClass: better });

  // export the plugin
  return $.fn.removeClass;
}));