JSFiddle - React, Tailwind, and code Playground

HTML

<div class="details">
  <h1 id="title">Old title</h1>
  <h3 id="author">
    <a id="aId" href="https://www.google.pl/">Old author</a>
  </h3>
</div>

JavaScript

setTimeout(function() {
   var title = $("#title");// the id of the heading
   var author = $("#author a");// id of author 

   title.text("New title");
   author.text("New author");
   var a = document.getElementById('aId');
   a.href = "http://bing.com"
 }, 3000);