get option value jquery

var selectedOptionText = $('#mySelectID').find(":selected").text();//selected option text
var selectedOptionVal = $('#mySelectID').find(":selected").val();//selected option value

<select id="myselect">
    <option value="1">Mr</option>
    <option value="2">Mrs</option>
    <option value="3">Ms</option>
    <option value="4">Dr</option>
    <option value="5">Prof</option>
</select>

<script>
$( "#myselect option:selected" ).val();
</script>

$("select.your-select").change(function(){ 
	$(this).children("option:selected").val();
});

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

$("#vacc_wellness_agegroups option: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

jquery get selected option value