JSFiddle - React, Tailwind, and code Playground
HTML
<select id="things">
<option>1</option>
<option>2</option>
<option>3</option>
</select>
JavaScript
$("#things").clone().insertAfter($("#things")).before('<br>');
<select id="things">
<option>1</option>
<option>2</option>
<option>3</option>
</select>
$("#things").clone().insertAfter($("#things")).before('<br>');