Nodejs Utililty Methods String Starts With

String.prototype.startWithVowel = function () {
    return this.charAt(0).toLowerCase().isVowel();
};
String.prototype.isVowel = function () {
    var vowels = ['a', 'e', 'i', 'o', 'u'];
    return vowels.indexOf(this.toLowerCase()) != -1;
};

String.prototype.beginsWith = function( str ) {
    return this.substr( 0, str.length ) == str;
};

String.prototype.beginsWith = function(s){
    return this.indexOf(s) == 0;
};

String.prototype.beginsWith= function(s)
    return s===this.substring(0, s.length);
if (!String.prototype.localeCompare)
    String.prototype.localeCompare = function(other)
        if (this < other)
            return -1;
...

String.prototype.beginsWith = function(t) {
    'use strict';
    t = t.toString();
    return (t.toString() === this.substring(0, t.length));
};
String.prototype.trim = function() {
    'use strict';
    return this.replace(/^\s+/,'').replace(/\s+$/,'');
};
...

String.prototype.beginsWith = function(t) {
    'use strict';
    t = t.toString();
    return (t.toString() === this.substring(0, t.length));
};

String.prototype.beginsWith = function(t, i) {
  if (i == false) {
    return (t == this.substring(0, t.length));
  } else {
    return (t.toLowerCase() == this.substring(0, t.length).toLowerCase());
};

String.prototype.beginsWithVowel = function(){
  if (this == "") return false;
  return "aeiou".split("").indexOf(this[0].toLowerCase()) !== -1
function translatePigLatin(str) {
   var nonv = str.split(/[aeiou]/)[0].length
   if (nonv == 0){
       return str + "way";
    }else {
...