JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<ul>
  <li>One</li>
  <li>Two</li>
  <li>Three</li>
</ul>

JavaScript

$(function() {
    var liNodes = $("li");
    liNodes.each(function(index, value) {
      //var span = $("<span></span>");
      let span = document.createElement("span");
      value.append(span);
      console.log(value);
    });
  });