JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.11.1/jquery.validate.min.js"></script>
<script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.11.1/additional-methods.js"></script>
<form id="login_form">
<center><br/><br/><br/>
    <div class="login_div">
        <center><h3>Log In</h3>
        <table align="center" width="400px">
            <tr><td class="input_td">Email:</td><td class="textfield_td"><input type="text" class="textfield" id="user_email" name="user_email"/></td></tr>
            <tr><td colspan="2" id="invalid_user_email"></td></tr>
            <tr><td class="input_td">Password:</td><td class="textfield_td"><input type="password" class="textfield" id="password" name="password"/></td></tr>
            <tr><td colspan="2" id="invalid_password"></td></tr>
            <tr><td colspan="2" class="error_text" id="login_error"></td></tr>
        </table>
        <input  type="submit" value="Log In"/></center>
    </div>
</center>
</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 () {

    $('#login_form').validate({
        rules: {
            user_email: {
                required: true,
                email: true
            },
            password: {
                required: true
            }
        },
        submitHandler: function (form) { 
            alert('valid form submitted'); // for demo
            return false;
        }
    });
    
});