Javascript Array hasElementsStartingWith(currentWord, ignoreCase)

Array.prototype.hasElementsStartingWith = function (currentWord, ignoreCase) {
 for (var i = 0; i<this.length; i++) {
  var localWord = this[i].substring(0, currentWord.length);
  if ( localWord ===  currentWord || (ignoreCase && currentWord.toLowerCase() === localWord.toLowerCase()) )
   return true;//www.ja va  2  s  . co  m
 }
 return false;
}