jquery validate bootstrap 错误样式配置

 $().ready(function () {
        $("#commentForm").validate({
            errorPlacement: function (error, element) {
                element.next().remove();
                element.after('<span class="glyphicon glyphicon-remove form-control-feedback" aria-hidden="true"></span>');
                element.closest('.form-group').append(error);
            },
            highlight: function (element) {
                $(element).closest('.form-group').addClass('has-error has-feedback');
            },
            success: function (label) {
                var el = label.closest('.form-group').find("input");
                el.next().remove();
                el.after('<span class="glyphicon glyphicon-ok form-control-feedback" aria-hidden="true"></span>');
                label.closest('.form-group').removeClass('has-error').addClass("has-feedback has-success");
                label.remove();
            },
            errorElement: 'span',
            errorClass: 'help-block',
        });
    });