Nodejs Utililty Methods String Padding Right

String.prototype.rpad = function(character, count) {
  var ch = character || "0";
  var cnt = count || 2;
  var s = "";
  while (s.length < (cnt - this.length)) { s += ch; }
  s = s.substring(0, cnt-this.length);
  return this+s;

String.prototype.rpad = function(count, pad) {
    pad = pad || '0';
    str = this + '';
    return str.length >= count ? str : str + new Array(count - str.length + 1).join(pad);
};

'use strict';
String.prototype.rpad = function(padString, length) {
  var str = this;
  while (str.length < length) {
    str = str + padString;
  return str;
};

String.prototype.rpad = function(padString, length) {
  var str = this;
  while(str.length < length)
    str = str + padString;
  return str;

String.prototype.rpad = function(padString, length) {
  var str = this;
    while (str.length < length){
        str = str + padString;
    return str;

String.prototype.rpad = function(padString, length) {
  var str = this;
    while (str.length < length)
        str = str + padString;
    return str;
};

String.prototype.rpad = function(padString, length) {
  var str = this;
    while (str.length < length)
        str = str + padString;
    return str;

String.prototype.rpad = function(pad_str, length) {
  var str = this;
  while (str.length < length) str = str + pad_str;
  return str;