JSFiddle - React, Tailwind, and code Playground
HTML
<div class="widget_output">
<ul>
<li>
<p>
<div>This is a random item</div>
<div>This is a random item</div>
<div>This is a random item</div>
<div>This is a random item</div>
</p>
</li>
<li>
<p>
<div>This is a random item</div>
<div>This is a random item</div>
<div>This is a random item</div>
<div>This is a random item</div>
</p>
</li>
</div>
JavaScript
$(".widget_output div").replaceWith(function() { return "<span>" + this.innerHTML + "</span>"; });