JSFiddle - React, Tailwind, and code Playground

HTML

<select id="testSelect" name="test">
    <option value="0">Zero</option>
    <option value="1">One</option>
</select>
<button id="button">Show current value</button>
<div>Selected value is:<span id="sel"></span></div>

JavaScript

$('#button').click(function() {
    $('#sel').html($('#testSelect').val());
});