RadioButton change event jquery

Question

I write this event for RadioButton change event.but for first timer that page load.it doesnt work.why?

//html mvc code
    @Html.RadioButtonFor(m => m.DigitalFile, false) خیر
    @Html.RadioButtonFor(m => m.DigitalFile, true) بله

     <script>
    $(function () {
        $("input[name='DigitalFile']").change(function () {
        var $this = $(this);
        if ($this.val() == "True") {
            $("#MapZoning").attr("disabled", false);
        } else {
            $("#MapZoning").attr("disabled", true);
        }
        });
    });
</script>

Answer 1

I didn't get your question. .but for first timer that page load.it doesnt work.why? If you are saying that when the page loads, the attribute of mapZoning doesn't change, then that's because you are only calling the function when some change occurs in your DigitalFile (ie, someone, checks it or unchecks it)