Nodejs Utililty Methods String Repeat

String.prototype.repeat = function(n) {
    return new Array(isNaN(n) ? 1 : ++n).join(this);

String.prototype.repeat = function(n)
    return new Array(n+1).join(this);
function christmasTree(height) {
  var tree = [];
  for(var i = 1; i <= height; i++) {
    tree.push(" ".repeat(height - i) + "*".repeat((i - 1) * 2 + 1) + " ".repeat(height - i));
  return tree.join("\n");

String.prototype.repeat = function(n) {
    return new Array(n+1).join(this);

String.prototype.repeat= function(n){
    n= n || 1;
    return Array(n+1).join(this);

String.prototype.repeat = function(n) {
  var s = "", t = this.toString();
  while (--n >= 0) {
    s += t
  return s;

String.prototype.repeat = function(n){
  var str = "";
  while(n > 0){
    str += this;
    --n;
  return str;

String.prototype.repeat = function(n) {
  return new Array( n + 1 ).join( this );
};

repeat={
 text.function(s,n){if(s!==null && n>0){var t='';while(n>0){if(n%2===1){t+=s};s+=s;n>>=1};s=t};return s},
};
String.prototype.repeat=function(n){return repeat.text(this,n)};
console.clear();
var demo="2".repeat(114);
console.log(demo.length,demo)

String.prototype.repeat = function(num) {
  var self = this;
  for (var i = 0; i < num; i++) {
    self += this;
  return self;
var str = 'hello';
console.log(str.repeat(1)); 
...

String.prototype.repeat = function(num) {
  return new Array(num + 1).join(this);
};
if(!Function.prototype.bind) {
  Function.prototype.bind = function(binding) {
    return $.proxy(this, binding);
  };