Nodejs Utililty Methods Array Clone

Array.prototype.clone = function() {
  return this.slice(0);
};

Array.prototype.clone = function() {
    return this.slice();  
};

Array.prototype.clone = function () {
  var newArray = new Array();
  for(var index=0; index<this.length;index=index+1) {
    newArray[index] = this[index];
  return newArray;
};

var utils = {
  extend: function(orig, extra) {
    return Object.keys(extra).forEach(function(key) {
      orig[key] = extra[key];
    });
};
Array.prototype.clone = function() {
  return this.slice(0);
...

Array.prototype.clone = function() {
    var arr = this.slice(0);
    for( var i = 0; i < this.length; i++ ) {
        if( this[i].clone ) {
            arr[i] = this[i].clone();
    return arr;

Array.prototype.clone = function() {
    var arr = this.slice(0);
    for( var i = 0; i < this.length; i++ ) {
        if( this[i].clone ) {
            arr[i] = this[i].clone();
    return arr;

Array.prototype.clone = function() {
  var results = new Array(this.length);
  for (var i = 0, len = this.length; i < len; i++) {
    results[i] = this[i];
  return results;
};
Array.prototype.clone = function() {
  return [].concat(this);
...

Array.prototype.clone = function() {
    return [].concat(this);
};
function mySplit(str, ch) {
    var pos, start = 0, result = [];
    while ((pos = str.indexOf(ch, start)) != -1) {
        result.push(str.substring(start, pos));
        start = pos + 1;
    result.push(str.substr(start));
    return(result);    

Array.prototype.clone = function() {
    var isArr = function(elm){
        return String(elm.constructor).match(/array/i) ? true : false;
    var cloner = function(arr){
        var arr2 = arr.slice(0), len = arr2.length;
        for(var i=0; i < len; i++){
            if( isArr(arr2[i]) )
               arr2[i]=cloner( arr2[i] );
...

Array.prototype.clone = function () {
    var cloneList = Array();
    for (var i = 0, a = 0; i < this.length; i++) {
        cloneList.add(this[i]);
    return cloneList;
};