Nodejs Utililty Methods Array Clone

Array.prototype.clone = function() {
  var newArray = [];
  for (var i = 0; i < this.length; i++) {
    if (typeof(this[i]) == 'object' || typeof(this[i]) == 'function') {
      newArray[i] = this[i].clone();
    } else {
      newArray[i] = this[i];
  return newArray;
};

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

Array.prototype.clone = function () {
  var a = new Array(); 
  for (var property in this) {
    a[property] = typeof (this[property]) == 'object' ? this[property].clone() : this[property]
  return a

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

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

Array.prototype.clone = function(){
  var ret = new Array(this.length);
  for(var i=0;i<this.length;i++){
    if(this[i].constructor==Array){
      ret[i]=this[i].clone();
    }else{
      ret[i]=this[i];
  return ret;

'use strict';
function clone_array(src, deep) {
  var result = [];
  var i, l = src.length;
  for (i = 0; i < l; i++) {
    if (deep)
      result.push(clone(src[i], deep));
    else
      result.push(src[i]);
...

Array.prototype.cloneReserva = function() {
   var arr = [];
   for(var i = 0; i < this.length ; i++){
       obj = {
         reservaId   : this[i].reservaId,      
          color       : this[i].color, 
          timeStart   : new Date(this[i].timeStart),  
          timeEnd     : new Date(this[i].timeEnd),  
          reservedBy  : this[i].reservedBy, 
...

Array.prototype.Clone = function()
    var n = [];
    var s = this.constructor;
    for ( var i in this )
        if ( !s[ i ] )
            if ( this[ i ] != null && typeof this[ i ] == typeof [] )
                n[ i ] = this[ i ].Clone();
...

Array.prototype._clone = function() {
    var ar = [];
    for(var i = 0; i < this.length; i++) {
        ar.push(this[i]);
    return ar;