JSFiddle - React, Tailwind, and code Playground

HTML

<div class="del_select" id="country_select">
            <label for="country">
                <select class="selectBlock" id="country">
				<option value="2">Армения</option>
				<option value="2">Беларусь</option>
				<option value="2">Казахстан</option>
				<option value="2">Киргизия</option>
				<option selected value="1">Россия</option>
                </select></label>
        </div>

JavaScript

alert('нет!');
$('#country').change(function () {
				alert('ДА!');
			});
$('#country').change();
      		alert('ДА!');