JSFiddle - React, Tailwind, and code Playground
HTML
<form>
<fieldset disabled="disabled" id="foo">
<input type="text" name="foo"/>
</fieldset>
</form>
JavaScript
console.log($('foo').getAttribute('disabled'))
<form>
<fieldset disabled="disabled" id="foo">
<input type="text" name="foo"/>
</fieldset>
</form>
console.log($('foo').getAttribute('disabled'))