JSFiddle - React, Tailwind, and code Playground
HTML
<script src="http://code.jquery.com/jquery-1.11.1.min.js"></script>
<select name="youselectbox" id="selectme">
<option value="1">Option 1</option>
<option value="2">Option 2</option>
<option value="3">Option 3</option>
</select>JavaScript
$(document).ready(function()
{
$("#selectme").prop("selectedIndex", 1);
});