Countdown auto update database meskipun tidak sedang mengakses halaman countdown tersebut

<script>

       var deadline = $('#deadline').val();
       var id_pesanan = $('#id_pesanan').val();
       var status = $('#status').val();
       var countDownDate = new Date(deadline).getTime();

       var x = setInterval(function() {

        var now = new Date().getTime();

        var distance  = countDownDate - now;

        var days = Math.floor(distance / (1000 * 60 * 60 * 24));
        var hours = Math.floor((distance %(1000 * 60 * 60 * 24))/(1000 * 60 * 60));
        var minutes = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60));
        var seconds = Math.floor((distance % (1000 * 60)) / 1000);

        document.getElementById("day").innerHTML =days ;
        document.getElementById("hour").innerHTML =hours;
        document.getElementById("minute").innerHTML = minutes;
        document.getElementById("second").innerHTML =seconds;

        if (distance < 0 && status==="Belum Bayar")
        {
           clearInterval(x);
           $.get("batalpesanan.php", {id:id_pesanan});
       }
   },1000);
</script>