How many Odd and Even number are the in a array

Question

I have created an Array with some numbers. I want to find out how many even, and how many odd numbers it is in this Array. I have to print it out like this: (this is j

Answer 1

You could iterate with Array#reduce and count only the odds. For the rest just take the difference of the length of the array and the odds.

var tall = [5, 10, 15, 20, 25, 30, 35, 40, 45, 50],
    odd = tall.reduce(function (r, a) { return r + a % 2; }, 0),
    even = tall.length - odd;

console.log('odd', odd);
console.log('even', even);