来自chosen.jquery.js的代码

SelectParser.prototype.escapeExpression = function(text) {
      var map, unsafe_chars;
      if ((text == null) || text === false) {
        return "";
      }
      if (!/[\&\<\>\"\'\`]/.test(text)) {
        return text;
      }
      map = {
        "<": "&lt;",
        ">": "&gt;",
        '"': "&quot;",
        "'": "&#x27;",
        "`": "&#x60;"
      };
      unsafe_chars = /&(?!\w+;)|[\<\>\"\'\`]/g;
      return text.replace(unsafe_chars, function(chr) {
        return map[chr] || "&amp;";
      });
    };

 

 __hasProp = {}.hasOwnProperty,
    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };

 ------------------------------------------其他的

//for IE [<9]
(function(o) {
    "undefined" == typeof console && (
    o.console = {},
    o.console.log = function() {},
    o.console.dir = function() {},
    o.console.trace = function() {})
})(window);