JSFiddle - React, Tailwind, and code Playground
HTML
<div>
<p>
<span>
<strong>© just testing</strong>
</span>
</p>
</div>
JavaScript
$(function(){
var copyright = $('body *:contains(©)').filter(function(){
return $(this).find('*:contains(©)').length == 0
}).text();
alert(copyright);
})