jquery select dropdown

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

1$( "#myselect option:selected" ).val();

1$('select>option:eq(3)').prop('selected', true);
2

1$('#mySelectElement option')[0].selected = true;

1$("#element-id").val('the value of the option');
2