jquery validator example

jquery.validator.demo.js

$(function() {
    $.validator.addMethod("list", function(value, element, param) {
        var isValid = false;
        var list = $.parseJSON(param);
        $.each(list, function() {
            if (value == this) {
                isValid = true;
                return false;
            };
        })
        return isValid;
    });
    $("#commentForm").validate({
        debug: true,
        submitHandler: function(form) {
            alert("submit me");
        }
    });
    $("#list").rules("add", {
        list: '[1, 2, 3]'
    });
});​