$("select.country").change(function(){
var selectedCountry = $(this).children("option:selected").val();
alert("You have selected the country - " + selectedCountry);
});
$(document).ready(function(){
$("select.country").change(function(){
var selectedCountry = $(this).children("option:selected").val();
alert("You have selected the country - " + selectedCountry);
});
let payment_type = $("#olca_form_submit select[name='payment_type']")
.find(":selected")
.val();
<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
var conceptName = $('#aioConceptName').find(":selected").text();
$('.selDiv option[value="SEL1"]')
$("div.id_100 select").val("val2").change();
$('.id_100 option')
.removeAttr('selected')
.filter('[value=val1]')
.attr('selected', true)