many way are the to find odd and even in javascript code example
Example: how to find even and odd numbers in javascript
<!DOCTYPE html>
<html>
<body>
<script>
var num = 5;
document.write("Number = "+num+"<br>");
if(num % 2 == 0) {
document.write('Number is even!');
} else {
document.write('Number is odd!');
}
</script>
</body>
</html>