Access dynamic(mysql) multiple field values of selected options using jquery or javascript

Question

<select id="sub-category" name="scat[]" multiple="multiple" placeholder="Select SubCategories"><option val=""></option>';

I have used select2 jquery plugin for selecting mutiple categories. Now i need to access values of multi-selected options using jquery like below. Can anyone help me.

tag1= $("#sub-category[0]").val();
tag2= $("#sub-category[1]").val();
tag3= $("#sub-category[2]").val();
tag4= $("#sub-category[3]").val();

Answer 1

This will log the value of every selected option

$(function(){
    $('#some_button').click(function(){
        $('#sub-category :selected').each(function(){
            console.log($(this).val());
        });
    });
});