Nodejs Array Average average()

Method Source Code

Array.prototype.average = function()
{
  if (this.length < 1) {
      return Number.NaN;
  }//from ww w  .jav a2  s.co  m
  
  return this.sum() / this.length;
}

Related

1. average()

   Array.prototype.average = function() {
     var avg = 0;
     this.forEach(function(val) {
       avg += val;
     });
     return avg / this.length;
   };
   

2. average()

   Array.prototype.average = function () {
     return this.sum() / this.length
   

3. average()

   Array.prototype.average = function(){
     return this.reduce( (a,b) => a + b, 0) / this.length
   

4. average()

   Array.prototype.average = function () {
     return this.sum() / this.length;
   };
   console.log([1, 2, 3, 4].average());
   

5. average()

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

6. average()

   Array.prototype.average = function () {
       var sum = 0, j = 0;
       for (var i = 0; i < this.length, isFinite(this[i]); i++) {
           sum += parseFloat(this[i]); ++j;
       return j ? sum / j : 0;
   };
   

7. average()

   Array.prototype.average = function() {
     var sum = this.sum();
     var count = this.length;
     return sum/count;
   

8. average()

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

9. average(arr)

   Array.prototype.average = function(arr) {
     if(!arr) arr = this;
     var len =  arr.length, i, avg = 0;
     for( i = 0; i < len; i++ ) {
       avg += arr[i];
     return avg / len;