Question

I have page unload javascript that is working fine, but not in IIS ,Do I need to give any permission in IIS for this?Here is my javascript that is not working

window.onbeforeunload = InitializeService;
function InitializeService() {
    InitializeService1();
    if (checkdisposition.disposition == "") {
        var agree =   confirm("You Did Not Save Disposition, Are You Sure You Want To Navigate?");
        if (agree) {
            return true;
        }
        else {
            return "You Did Not Save Disposition ";
        }
    }
}

function InitializeService1() {
    if (window.XMLHttpRequest) {
        var url = "http://localhost:54329/WebServices/PageUnloadCall.asmx?op=Page_Unload";
        myReq.onreadystatechange = checkStatus1;
        myReq.open("GET", url, false); // true indicates asynchronous request
        myReq.send();
    }
}

Answer 1

What are your site’s Urls for “non IIS case” and “IIS case”? You could be hitting cross domain restriction when opening Web request to “http://localhost:54329” in IIS case (since site would be different (usually http://localhost:80).

Note that as @Juan Mendes pointed out the XMLHttpRequest may not work at all at that time and definitely will not return asynchronous results before page finish closing.