how to get value from select option using input name in jquery

1$("select.country").change(function(){
2  var selectedCountry = $(this).children("option:selected").val();
3  alert("You have selected the country - " + selectedCountry);
4});

1$('#ddlID').val();
2$('#ddlID').text();

1	document.getElementById('prod_addcart21').addEventListener('click', function () {
2		if ($('select[name="variation[1]"]').val() == '') {
3				alert('Please, choose an option 1');
4			return false;
5		} else if ($('select[name="variation[2]"]').val() == '') {
6	
7			alert('Please, choose an option 2');
8
9
10
11		} else if ($('select[name="variation[3]"]').val() == '') {
12
13			alert('Please, choose an option 3');
14
15
16		} else {
17			alert("product added to cart")
18		}
19	
20
21	});