JSFiddle - React, Tailwind, and code Playground
HTML
<div id="elm">
<p>lorem ipsum</p>
</div>
CSS
#elm p { background:#FF0000; color:#FFFFFF; font-weight:bold;}
.select{ background:#000099;}
JavaScript
$(document).ready(function(){
$('#elm').click(function(){
alert();
$("p").addClass('select') });
function(){ $("p").removeClass('select') }
});
});