JSFiddle - React, Tailwind, and code Playground

HTML

<select id="mySelect">
<option>a</option>
<option>s</option>
</select>

CSS

option {
    height:50px;
}

JavaScript

$(document).ready(function () {
  $("#mySelect").change(function () {
    alert($(this.options[this.selectedIndex]).height());
  });
});