JSFiddle - React, Tailwind, and code Playground
HTML
<span id="event">
<ul>
<li>Activities
<ul>
<li>Physical1
<ul>
<li>Cricket
<ul><li>One Day</li>
</ul>
</li>
</ul>
</li>
</ul>
</li>
</ul>
</span>
<div id="activity"></div>
JavaScript
$("#event li").on("click", function (event) {
event.stopPropagation();
$("#activity").append($(this).clone().children().remove().end().text());
return false;
});