Get Page Number from URL using Javascript and rejex

I want to get page number from this url

https://localhost:44385/Product/5/p-skrj?Page=3

and this is my js code from this link

   $(document).ready(function () {
    var address = window.location.href;
    var pagenumber = address.match(/\/page\/(\d*)/)[1];
    alert(pagenumber);
});

but still not working.