Nodejs Utililty Methods Array Sum

Array.prototype.sum = function(){
  return this.reduce( (a,b) => a + b, 0)

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

Array.prototype.sum = function(){
  "use strict";
  var count = 0;
  this.forEach(function(item){
    count += item;
  });
  return count;
};

Array.prototype.sum = function(){
  'use strict';
  var count = 0;
  this.forEach(function(item){
    count += parseFloat(item) || 0;
  });
  return count;
};

Array.prototype.sum = function () {
  var sum,
    i;
  sum = 0;
  for (var i = 0; i < this.length; i++) {
    sum += this[i];
  };
  return sum;
console.log([1, 3, 12, 33, 2].sum());

function NavBarCtrl($scope) {
    $scope.isCollapsed = true;
function randomnumber(limite) {
    return Math.ceil(Math.random() * limite);
function getRandomInt(min, max) {
    return Math.floor(Math.random() * (max - min + 1)) + min;
Array.prototype.sum = function() {
    var total = 0;
    for (var i = 0, _len = this.length; i < _len; i++) {
        total += this[i];
    return total;
};

Array.prototype.sum=function(){
  return this.reduce(function(s,n){return s+n})
var isVowel = function(chr) {
  return 'aeiou'.indexOf(chr) != -1;
function VowelCount(str) {
  return str.split('')
    .map(function(chr) {
...

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

Array.prototype.sum = function () { 
  return this.reduce(function(a, b) { 
    return a + b; 
  }, 0); 

Array.prototype.sum = function () {
  var sum,
    i;
  sum = 0;
  for (var i = 0; i < this.length; i++) {
    sum += this[i];
  };
  return sum;
console.log([1, 3, 12, 33, 2].sum());