Javascript String words()

/**/*from w  ww.ja va 2  s  . c  o  m*/
 * Count the words inside a given element. The output can be formatted using
 * the `{{count}}` placeholder.
 *
 * @example  'Hello, world!'.words()
 *           2
 *
 * @return   {Number} Returns the number of words in the given string.
 */

String.prototype.words = String.prototype.words || function () {
  return this.replace(/\s+/g, ' ').split(' ').length
}

String.prototype.words = function() {
  return this.match(/[a-z]+/gi) || [];
};