check select box value in jquery code example

Example 1: jquery get selected option value

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

Example 2: get selected option value

var conceptName = $('#aioConceptName').find(":selected").val();

Example 3: get option value jquery

<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

Example 4: jquery dropdown selected value show field

jQuery(document).ready(function() {
    jQuery("#carm3").change(function() {
        if (jQuery(this).val() === 'other'){ 
            jQuery('input[name=other_interest]').show();   
        } else {
            jQuery('input[name=other_interest]').hide(); 
        }
    });
});