JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.10.0/jquery.validate.min.js"></script>
<script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.10.0/additional-methods.js"></script>
<form id="myform">
    <table>
        <tr>
            <td>
                <input type="checkbox" name="n30001" id="n30001-1" class="req_question" value="1" />
                <input type="checkbox" name="n30001" id="n30001-2" class="req_question" value="2" />
            </td>
            <td>
                <input type="checkbox" name="n30002" id="n30002-1" class="req_question" value="1" />
                <input type="checkbox" name="n30002" id="n30002-2" class="req_question" value="2" />
            </td>
            <td>
                <input type="radio" name="n30003" id="3n0003-1" class="req_question" value="1" />
                <input type="radio" name="n30003" id="n30003-2" class="req_question" value="2" />
            </td>
            <td>
                <input type="radio" name="n30004" id="n30004-1" class="req_question" value="1" />
                <input type="radio" name="n30004" id="n30004-2" class="req_question" value="2" />
            </td>
        </tr>
    </table>
    <input type="submit" />
</form>
<a href="http://docs.jquery.com/Plugins/Validation" target="_blank">Validation Documentation</a>

CSS

a {
    display: block;
    position: absolute;
    bottom: 0;
}

JavaScript

$(document).ready(function () {

    $('#myform').validate({
        // rules defined by the class,
        submitHandler: function (form) { // for demo
            alert('valid form');
            return false;
        }
    });

    $.validator.addMethod('req_question', function (value, element) {
        return value > 0;
    }, 'Please check at least one box.');

});