Nodejs Array Sum sum()

Method Source Code

Array.prototype.sum = function () {
    return this.reduce(function(previousValue, currentValue) {
        return previousValue + currentValue;
    });/*w  w  w  .ja  v a  2s. c om*/
};

Related

1. sum()

   Array.prototype.sum = function() {
     var n = 0;
     this.forEach(function(e) {
       n += e;
     });
     return n;
   };
   

2. sum()

   Math.TAU = Math.PI * 2;
   Array.prototype.sum = function()
     for (var i = 0, L = this.length, sum = 0; i < L; sum += this[i++]);
     return sum;
   Array.prototype.product = function()
     for (var i = 0, L = this.length, product = 1; i < L; product =  product * this[i++]);
   ...
   

3. sum()

   Array.prototype.sum = function(){
     return this.reduce(function(sum, item){
       return sum + item;
     }, 0)
   function isInt(n){
       return Number(n) === n && n % 1 === 0;
   function isFloat(n){
   ...
   

4. sum()

   Array.prototype.sum = function() {
     var sum = 0;
     this.forEach(function(k) {
       sum += k;
     });
     return sum;
   };
   

5. sum()

   Array.prototype.sum = function()
     if (this.length < 1) {
       return Number.NaN;
     var sum = 0;
     this.forEach(function(a) {
       sum += a;
     });
   ...
   

6. sum()

   Array.range = function(start, count) {
     var newArray = [];
     for( var i = 0, j = start; i< count; i++, j++)
       newArray.push(j);
     return newArray;
   Array.prototype.sum = function () {
       var sum = 0;
       this.forEach(function (value) {
   ...
   

7. sum()

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

8. sum()

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

9. sum()

   Array.prototype.sum = function(){
     var ret = this[0];
     for(var i=1;i<this.length;i++){
       ret += this[i]
     return ret;