JSFiddle - React, Tailwind, and code Playground

HTML

<div>
<ul id="list1">
  <li>Ut enim ad minim veniam.</li>
  <li>Excepteur sint occaecat cupidatat non proident.</li>
</ul>
</div>

JavaScript

//create new li element
var a = document.createElement("a");
var ulist = document.getElementById("list1");
var newItem = document.createElement("li");

a.textContent = "...ooo";
a.setAttribute('href', "http://www.msn.com");
newItem.appendChild(a);
ulist.appendChild(newItem);