JSFiddle - React, Tailwind, and code Playground

HTML

<ul id="list">
 <li>test</li>
 <li>test</li>
 <li>test</li>
 <li>test</li>
 <li>test</li>
</ul>

CSS

#list li { display: none; }

JavaScript

function fadeLI(elem) { elem.fadeIn(500, function() { fadeLI($(this).next()); }); }
                        
fadeLI($("#list li:first"));