Nodejs Array Average avg()

Method Source Code

Array.prototype.avg = function() {
  var av = 0;/*from  w  w w  .  jav  a2  s  .  c  om*/
  var cnt = 0;
  var len = this.length;
  for (var i = 0; i < len; i++) {
    var e = +this[i];
    if(!e && this[i] !== 0 && this[i] !== '0') e--;
    if (this[i] == e) {av += e; cnt++;} }
  return av/cnt;
}
Array.prototype.max = function() {
  var max = this[0];
  var len = this.length;
  for (var i = 1; i < len; i++) if (this[i] > max) max = this[i];
  return max;
}
Array.prototype.min = function() {
  var min = this[0];
  var len = this.length;
  for (var i = 1; i < len; i++) if (this[i] < min) min = this[i];
  return min;
}

Related

1. average()

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

2. 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;
   

3. average(fun)

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

4. avg()

   Array.prototype.avg = function(){
     return this.sum() / this.length;
   };
   Array.prototype.sum = function(){
     for (var i = 0, sum = 0 ; i != this.length; ++i) {
       var n = this[i];
       if(!isNaN(n)) {
         sum += n*1;
     return sum;
   };
   

5. avg()

   Array.prototype.avg = function() {
     var av, num, _i, _len;
     av = 0;
     for (_i = 0, _len = this.length; _i < _len; _i++) {
       num = this[_i];
       av = av + num;
     return av / this.length;
   };
   ...
   

6. avg()

   Array.prototype.avg = function () {
     var sum=0;
     var drops=this.drops();
     for (var i = 0; i < this.length; i++)
       if (+this[i] !== 0)
         sum += +this[i];
     return (sum/(this.length-drops));
   

7. findAverage()

   Array.prototype.findAverage = function(){
       var length = this.length;
       var average = 0;
       for(var i = 0; i < length; i++){
           var value = this[i];
           average += value;
       return average / length;
   var numbers = [1, 34, 5, 17, 2, 3, 90];
   var average = numbers.findAverage();
   for(key in numbers) {
       var message = key + ' = ' + numbers[key];
       if(numbers[key] < average){
           message += ' \\/'
       else {
           message += ' /\\'
       console.log(message);
   

8. findAverage()

   Array.prototype.findAverage = function(){
       var length = this.length;
       var average = 0;
       for(var i = 0; i < length; i++){
           var value = this[i];
           average += value;
       return average / length;
   var numbers = [1, 34, 5, 17, 2, 3, 90];
   var average = numbers.findAverage();