Nodejs Array Sum sum()

Method Source Code

Array.prototype.sum = function () {
  return this.reduce(function (total, aValue) {
    return total + Number(aValue);
  });//from w  w w  .j  a v a2s  . c  o  m
};

Related

1. sum()

   function range(a, b) {
       return [...Array(b-a).keys()].map(x => x + a);
   Array.prototype.sum = function() {
       return this.reduce((a, b) => a + b, 0);
   module.exports = function(n) {
       var sumOfSquares = range(1,101).map(x => x*x).sum();
       var squareOfSum = Math.pow(range(1,101).sum(), 2);
   ...
   

2. sum()

   Array.prototype.sum = function() {
     return this.reduce(function(p, c, i, arr) {
       return p + c;
     });
   };
   var a = [];
   process.stdin.resume();
   process.stdin.setEncoding("utf8");
   process.stdin.on("data", getNum);
   ...
   

3. sum()

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

4. sum()

   Array.prototype.sum = function () {
       var total = 0;
       var i = this.length;
       while (i--) {
           total += this[i];
       return total;
   function isEmpty(obj) {
   ...
   

5. sum()

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

6. sum()

   var log = console.log.bind(console)
   Array.prototype.sum = function() {
       return this.reduce(function(previous, current) {
           return previous + current
       })
   var numbers = [1, 2, 3, 4, 5, 6]
   var result = numbers.sum()
   log(result)
   ...
   

7. sum()

   Array.prototype.sum=function(){
      return this.reduce(function(s,n){return s+n})
   

8. sum()

   Array.prototype.sum = function()
       var sum = 0;
       for(var i = this.length; -- i >= 0 ;)
           sum += (this[i] === null || this[i] === undefined) ? 0 : this[i];
       return sum;
   

9. sum()

   Array.prototype.sum = function() {
     for(var sum = i = 0; i < this.length; i++) {
       sum += this[i]
     return sum
   var arr = [1,21,3,4,22,45,6,7,32];
   console.log(arr.join("+")+"="+arr.sum());