JavaScript: Check if window.location.href has been changed

I have following code to show a loading panel after e.g. clicking a button and making an Ajax call:

    $(document).on("click", function (e) {
        window.LoadingPanel.Show();
    });

After the Ajax call following code makes sure the loading panel disappears again:

    $(document).ajaxComplete(function() {
        if (window.LoadingPanel != null) {
            window.LoadingPanel.Hide();
        }
    });

But in some cases I redirect to another page depending on the result of the Ajax call by setting the window.location.href. In this case I want the ajaxComplete function NOT to hide the loading panel until the redirect has been succeeded.

How can I check in the ajaxComplete function if the window.location.href has been changed and the page is about to redirect?