MVC - Custom Validation - Validate on each checkbox click

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@model WebApplication10.Models.Customer

@{ Html.EnableClientValidation();}
@using(Html.BeginForm(null, null, FormMethod.Post))
{
    @Html.AntiForgeryToken();
    @Html.CheckBoxFor(x => x.IsActive)
    @Html.TextBoxFor(x => x.FirstName)
    @Html.ValidationMessageFor(x => x.FirstName)

    @Html.TextBoxFor(x => x.LastName)

    <input type="submit" value="SUBMIT" />
}

@section Scripts{
    <script type="text/javascript">
        $("#IsActive").change(function (evt) {
            var validator = $("#FirstName").validate();
            var IsValid = $("#FirstName").valid();
        });
    </script>
}