<select name="geolocation_country[]" class="form-control form-control-chosen" id="geolocation_country" data-placeholder="Please select..." multiple>
                                <option  value="AF">Afghanistan</option>
                                <option  value="IN">India</option>
                                <option  value="DZ">Algeria</option>
                                <option  value="DS">American Samoa</option>
                                <option  value="AD">Andorra</option>
                                <option  value="AO">Angola</option>
                                <option  value="AI">Anguilla</option>
                                <option  value="AQ">Antarctica</option>
                                <option  value="AG">Antigua and Barbuda</option>
                                <option  value="AR">Argentina</option>
                                <option  value="AM">Armenia</option>
                                <option  value="AW">Aruba</option>
                                <option  value="AU">Australia</option>
                                <option  value="AT">Austria</option>
                                <option  value="AZ">Azerbaijan</option>
                                <option  value="BS">Bahamas</option>
</select>

<div id="show_geolocation_region">
<select name="geolocation_region[]" class="form-control form-control-chosen" id="geolocation_region" data-placeholder="Please select..." multiple>
            <option selected value="no">Target all states of India</option>
                                <option  value="1">Andaman & Nicobar Islands</option>
                                <option  value="2">Andhra Pradesh</option>
                                <option  value="3">Arunachal Pradesh</option>
                                <option  value="4">Assam</option>
</select>
</div>

$("#geolocation_country").on('change', function() {
    if(this.value == "IN") {
        alert('India clicked');
        $("#show_geolocation_region").show();
    } else  {
        $("#show_geolocation_region").hide();
    }

});

function showSelectedValues(self){
  let selectedValues = Array.from(self.selectedOptions)
    .map(option => option.value);
  console.log(selectedValues);
}