get option value jquery

var conceptName = $('#aioConceptName').find(":selected").val();$(document).ready(function(){
    $("select.country").change(function(){
        var selectedCountry = $(this).children("option:selected").val();
        alert("You have selected the country - " + selectedCountry);
    });$("#vacc_wellness_agegroups option:selected").val();$("#id option:selected").text();<select id="state">
    <option value="state1" data-id="1">state1</option>
    <option value="state2" data-id="2">state2</option>
    <option value="state3" data-id="3">state3</option>
</select>

$('#state option[data-id="2"]').val();

//output state2$('#ddlID').val();
$('#ddlID').text();