find median values from array in javascript (8 values or 9 values)

Question

How can i find median values from array in javascript

this is my array

var data = [       
    { values: 4 }, 
    { values: 4 }, 
    { values: 4 }         


        

Answer 1

Here about two things you have to be careful.

1) Operator precedence

When you are saying

var middle = m.length - 1 / 2;

It is same as

 var middle = m.length - 0.5; //Because / has much precedence than -

So you should say

 var middle = (m.length - 1) / 2;

Same problem with m.length - 1 % 2

2) You are not rounding middle so it's looking for decimal indexes in array. Which I think will return undefined.