Nodejs Array Sum sum()

Method Source Code

// Add custom function to Array prototype
Array.prototype.sum = function () {
   var sum,/*from   ww w  .  j  a  v  a2  s . c o m*/
      i;

   sum = 0;
   for (var i = 0; i < this.length; i++) {
      sum += this[i];
   };

   return sum;
}

console.log([1, 3, 12, 33, 2].sum());

Related

1. sum()

   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());
   

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;
   };
   

3. sum()

   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) {
   ...
   

4. sum()

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

5. sum()

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

6. sum()

   Array.prototype.sum = function () {
     return this.reduce(function(a, b) {
       return a + b;
     });
   };
   console.log([1, 2, 3].sum());
   

7. sum()

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

8. sum()

   Array.prototype.sum = function () {
     return (!this.length) ? 0 : this.reduce((acc, value) => {
       return acc + value;
     });
   };
   

9. sum()

   Array.prototype.sum=function(){return this.reduce(function(s,n){return s+n})}
   function NumberAddition(str) {
     return str.replace(/[^\d]/g, ' ').split(' ').map(Number).sum();
   NumberAddition(readline());