JSFiddle - React, Tailwind, and code Playground

HTML

<input type="checkbox" name='' id="confirm" />
<input type="submit" value="submit" id="submitButton" disabled="disabled" />

CSS

#menu.underline {
   text-decoration: underline;
}

JavaScript

$('#confirm').change(function() {
   $('#submitButton').attr('disabled', this.checked);
});