JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
Try to select this text.<br>
In Chromium, you can't, as expected.<br>
In Firefox, you can, as unexpected.

JavaScript

$('body').on('mousemove', function (event) {
  event.preventDefault();
});