Get selected value of a dropdown's item using jQuery

Question

How can I get the selected value of a dropdown box using jQuery?
I tried using

var value = $(\'#dropDownId\').val();

and

Answer 1

You can use any of these:

$(document).on('change', 'select#dropDownId', function(){

            var value = $('select#dropDownId option:selected').text();

            //OR

            var value = $(this).val();

});