Arithmetics1: Find Median number using Javascript.

Below is a simple javascript cooked up, that shows how to calculate the median number.
It calculates the median of the array [20,20,20,40,58,60,80];

function sortWell(a,b){

if(a>b) return 1

else if(a<b) return -1

else return 0

}


med=[20,20,20,40,58,60,80];


median=med.sort(sortWell)

num= median.length/2;

test_num= num.toString().indexOf('.');


m1= Math.ceil(num.toString());

m2=median[num]+median[num-1]

m3= m2/2

if(test_num!=-1){

document.write("Median number equals:"+median[m1-1]);

}else{

document.write("Median number equals: "+m3);

}

Result:

Median number equals: 40

Thanks for reading.