JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<div id="statLateralMenu">
    <h3>Statistics</h3>

    <ul>
        <li id="id1" class="selected">Stat 1</li>
        <li id="id2">Stat 2</li>
    </ul>
</div>

JavaScript

<script type="text/javascript">
$(function() {
    $("#statLateralMenu li").click(function()
    {
        alert( "A" );
    });
});
</script>