JSFiddle - React, Tailwind, and code Playground
HTML
<select id="practice_id" name="practice" column="practice" style="width: 200px">
<option value="">Default</option>
<option value="1">Test 1</option>
<option value="2">Test 2</option>
<option value="3">Test 3</option>
</select>
JavaScript
$(document).ready(function() {
$("#practice_id").children().val("-99");
});