JSFiddle - React, Tailwind, and code Playground
HTML
<script src="https://code.jquery.com/jquery-3.1.0.min.js"></script>
<div contenteditable="true" spellcheck="true">
This is an ok spellcheck: asfjlsafj alskjflsajflskf <var contenteditable="false" spellcheck="false">Why do you underline me? asfjlsafj</var> after var-tag asfjlsafj wuhu
</div>
JavaScript
$(function() {
$('div').focus();
});