Nodejs Array Sum sum()

Method Source Code

// Array extensions
Array.prototype.sum = function(){
   for(var i=0,sum=0;i<this.length;i++) {
     var val = Number(this[i]);
     if (!isNaN(val)) {
       sum += val;/*from w ww.  j  a  v a2s.co m*/
    }
   }
   return sum;
};

Related

1. sum()

   Array.prototype.sum = function() {
     var result = 0;
     this.forEach(function(item){
       result += item;
     });
     return result;
   console.log([1,2,3,4,5,6,7,8,9,10].sum());
   function Person(name, age) {
   ...
   

2. sum()

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

3. sum()

   Array.prototype.sum = function() {
       var total = 0;
       for (var i = 0; i<this.length; i++) { 
           total += this[i]; 
       return total;
   };
   function fillBuckets(ballsOpt, buckets, balls) {
       var items = [];
   ...
   

4. sum()

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

5. sum()

   Array.prototype.sum = function() {
     if (this.length === 0) {
       return 0;
     } else if (this.length === 1) {
       return parseInt(this[0], 10);
     } else {
       return this.reduce(function(x, y) {
         return x + y;
       });
   ...
   

6. sum()

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

7. sum()

   Array.prototype.sum = function(){
     var sum = 0;
     for (var i of this){
       sum += i;
     return sum;
   

8. sum()

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

9. sum()

   Array.prototype.sum = function(){
     return this.reduce((acc,x) => acc + x);