JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.10.0/jquery.validate.min.js"></script>
Note: Immediately after typing the first character in input field below, eager validation is triggered.
<form>
    <input type="text" name="email" placeholder="Email Address">
</form>

JavaScript

$(document).ready(function(){
    $('form').validate({
        rules: {
            email: {
                email: true
            }
        }
    });
});