JSFiddle - React, Tailwind, and code Playground

HTML

<button id="changeElementColorButton">Change color and show "myElement"</button>

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<div id="myElement">Hello!</div>

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JavaScript

(function() {
  document.getElementById('changeElementColorButton').addEventListener('click', function() {
    document.getElementById('myElement').style.color = 'red';
    window.scrollTo(0, document.body.scrollHeight || document.documentElement.scrollHeight);
  });
})();