JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://cdn.kendostatic.com/2012.2.710/js/kendo.all.min.js"></script>
<link rel="stylesheet" href="http://cdn.kendostatic.com/2012.2.710/styles/kendo.common.min.css">
<link rel="stylesheet" href="http://cdn.kendostatic.com/2012.2.710/styles/kendo.default.min.css">
<link rel="stylesheet" href="http://cdn.kendostatic.com/2012.2.710/styles/kendo.mobile.all.min.css">
<div id="tabstrip">
    <ul>
        <li class="k-state-active">
            Foo
        </li>
        <li>
            Bar
        </li>
    </ul>
    <div>
        <p>Foo</p>
    </div>
    <div>
        <p>Bar</p>
    </div>
</div>

<button onclick="replace()">Replace content of Foo</button>

JavaScript

var tabStrip = $("#tabstrip").kendoTabStrip().data("kendoTabStrip");

function replace() {
    var item = tabStrip.contentElement(0);
    $(item).html("Changed content");
    
    alert(item);
}