Question

I have like 40 different arrays and I want to find the average value of each of them.
In order to do it with each one, I have this code:

var SumArray1 = 0;
var avgArray1 = 0;

$.each(array1,function() {
    SumArray1 += this;
    avgArray1 = (SumArray1)/(array1.length);
    });

But as I have those 40 arrays, I was trying to look for a way to make that function abstract, but I don’t know how to introduce parameters for a function using $.each and I don’t think having forty functions would be the right thing to do…
Thanks!

Answer 1

Add this code:

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

Then at any point you can do something like

var myArray = [1,2,3,4];
var calculatedAverage = myArray.average();  // This will equal 2.5