sum of even numbers in array javascript code example

Example 1: sum of all numbers in an array javascript

const arrSum = arr => arr.reduce((a,b) => a + b, 0)

Example 2: sum of odd numbers in an array javascript

///sum of odd numbers in an array javascript without loop
var numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12];

var evenNumbers = numbers.filter(function(item) {
   return (item % 2 == 0);
});

console.log(evenNumbers);