how to print odd even number in javascript code example

Example 1: javascript get every odd element

//you can use the css nth-child property like this:
var second-child = document.querySeletorAll('[your element name]:nth-child(odd)');

Example 2: 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);