JSFiddle - React, Tailwind, and code Playground
HTML
<form>
a: <input name="a" />
b: <input name="b" />
</form>
<br /><br />
<span id="submit">Action</span>
JavaScript
$('input').change( function(){alert('A value was changed');});
$('#submit').click( function(){alert('Some stuff done here');});