JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.11.0/jquery.validate.min.js"></script>
<script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.11.0/additional-methods.js"></script>
<form id="new_user_session">
    <input class="input-block-level sq-input" id="user_session_email" name="user_session[email]" placeholder="email address" type="text" />
    <input class="input-block-level sq-input" id="user_session_password" name="user_session[password]" placeholder="password" type="password" />
    <input type="submit" />
</form>
<a id="docs" href="http://docs.jquery.com/Plugins/Validation" target="_blank">Validation Documentation</a>

CSS

#docs {
    display: block;
    position: fixed;
    bottom: 0;
    right: 0;
}

JavaScript

$(document).ready(function () {

    $('#new_user_session').validate({ // initialize the plugin
        rules: {
            'user_session[email]': {
                email: true,
                required: true
            },
            'user_session[password]': {
                required: true
            }
        },
        messages: {
            'user_session[email]': {
                email: "Please insert a valid email address",
                required: "Please insert your email address"
            },
            'user_session[password]': {
                required: "Please insert your password"
            }
        },
        submitHandler: function (form) { // for demo
            alert('valid form submitted'); // for demo
            return false; // for demo
        }
    });

});