JSFiddle - React, Tailwind, and code Playground
HTML
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form>
Email: <input type="text" name="email"><br><br>
Password: <input type="password" name="password"><br><br>
<input type="submit" value="Submit">
</form>
JavaScript
$("form").submit(function(event){
alert( "String");
});