Nodejs Utililty Methods Array Contain

Array.prototype.containsAny = function(items)
  for(var i=0; i<items.length; i++) {
    if(this.indexOf(items[i]) != -1)
      return true;
  return false;
};

Array.prototype.containsAnyOf = function(array) {
  var i = this.length;
  while (i--) {
    for (var x in array) {
      if (this[i] === array[x]) {
        return true;
  return false;

Array.prototype.containsArray = function(arr) {
    for (var i = 0; i < this.length; ++i) {
        if (this[i].length == arr.length) {
            var j;
            for (j = 0; j < arr.length; ++j)
                if (arr[j] != this[i][j])
                    break;
            if (j == arr.length)
                return i;
...

Array.prototype.containsArray = function(array){
    if(!this[0] || !this[0][0]) console.log('This function only works on 2 dimensional arrays!');
    for(let i=0; i<this.length; i++){
      if(this[i].sort().join(',') === array.sort().join(',')){
        return true
    return false;

Array.prototype.containsBy = function(elem, formatElem, formatListElem) {
    formatElem = formatElem || function (elem) {return elem;};
    formatListElem = formatListElem || function (elem) {return elem;};
    var contained = false;
    angular.forEach(this, function(listElem){
        if(formatListElem(listElem) == formatElem(elem)){
            contained = true;
    });
...

Array.prototype.containsByProp = function(propName, value){
  for (var i = this.length - 1; i > -1; i--) {
    var propObj = this[i];
      if(propObj[propName] === value) {
        return true;
return false;

Array.prototype.containsContentsOf = function(array) {
    var contains = true;
    if(!array)
        contains = false;
    for(var item=0; item<array.length; item++){
        if(this.indexOf(array[item]) < 0)
            contains = false;
    return contains;
...

Array.prototype.containsDuplicateValues = function () {
    var map = {};
    for (var i = 0, size = this.length; i < size; i++) {
        var value = this[i];
        if (value != 0) {
            if (map[value]) {
                return true;
            map[value] = true;
...

Array.prototype.containsElementByProperty = function(chave,obj) {
    var i = this.length;
    while (i--) {
      if (angular.equals(this[i][chave], obj)) {
            return true;
    return false;
};
...

Array.prototype.Contains = function( value )
    for ( var i = 0; i < this.length; i++ )
        if ( this[ i ] === value ) return true;
    return false;
};