JSFiddle - React, Tailwind, and code Playground

HTML

<select></select>
<span></span>

JavaScript

for (i=0; i < 5; i++) {
  $('select').append('<option>' + i + '</option>');
}

$('select option').eq(2).attr('selected', 'selected');

function sel(val) {
    $('span').empty().append('Выбраное значение: ' + val);
}

$('select').change(function(){
    var x = $(this).val();
    sel(x);
}).change();