code: function(str) {
      return str.replace(STRING_CAMELIZE_REGEXP, function(match, separator, chr) {
        return chr ? chr.toUpperCase() : '';
      });
    }
docs: Returns the lowerCaseCamel form of a string.
  
  'innerHTML'.camelize()         => 'innerHTML'
  'action_name'.camelize()       => 'actionName'
  'css-class-name'.camelize()    => 'cssClassName'
  'my favorite items'.camelize() => 'myFavoriteItems'
  
  @param {String} str
  The string to camelize.
  
  @returns {String} the camelized string.