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 ul li").live("click", function(event){
    event.stopPropagation();
    $("#activity").append(this.childNodes[0].nodeValue);
    return false;
});