Nodejs Array Sum sum()

Method Source Code

var numbers = [1,2,3,4,5,6];


Array.prototype.sum = function(){
  return this.reduce(function(p, c){
    return p+c;// ww w. java  2 s .c o m
  })
  //return eval(numbers.join("+"));
}

var result = numbers.sum();

console.log(result);
console.log(numbers);

Related

1. sum()

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

2. sum()

   const assert = require('assert')
   Array.prototype.sum = function() {
     return this.reduce((sum, el) => sum + el, 0)
   assert.equal([].sum(), 0)
   assert.equal([2, 5, 7].sum(), 14)
   

3. sum()

   Array.prototype.sum = function() {
       var res = 0;
       for(var p in this)
     res += this[p];
       return res;
   };
   var a = [1, 2, 3];
   var all_in = true;
   for(var i=0;i<5;++i)
   ...
   

4. sum()

   var ary1 = new Array(12, 55, 43, 32, 44);
   var ary2 = new Array(12, 33, 1);
   Array.prototype.sum = function() {
       var output = 0;
       for (var i = 0; i < this.length; i++) {
           output += this[i];
       return output;
   };
   ...
   

5. sum()

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

6. sum()

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

7. sum()

   Array.prototype.sum = function() {
     var i;
     var s:Number = 0;
     for (i=0; i < this.length; i++) {
       s += Number(this[i]);
     return s;
   var test = new Array(1, 2, 3);
   ...
   

8. sum()

   'use strict';
   Array.prototype.sum = function () {
       var total = 0;
       var i = this.length;
       while (i--) {
           total += this[i];
       return total;
   };
   ...
   

9. sum()

   Array.prototype.sum = function() {
     total = 0;
     for (var i=0;i < this.length;i++) {
       total += this[i];
     return total;
   };
     var a = [];
     for (var i=0;i < 1000;i++) {
   ...