code: function(string) {
        var str = String(string);
        for (var key in this.entityMap) {
          str = str.replace(RegExp(this.entityMap[key], "g"), key);
        }
        return str;
      }
docs: Unescapes HTML entities to special characters
  @memberof TableExport.prototype
  @param string {String}
  @returns {String} unescaped string