JSFiddle - React, Tailwind, and code Playground
HTML
<script src="//code.jquery.com/jquery-1.11.0.min.js"></script>
<form id="form1">
Digite seu nome:
<input type="text" id="txtNome"/>
<input type="submit"/>
</form>
JavaScript
<script type="text/javascript" src="http://code.jquery.com/jquery-1.8.1.min.js"></script>
<script type="text/javascript">
$(function(){
alert('oi');
});
</script>