AJAX url routing issue in IIS with virtual directory
You can add some code to your layout file or master page that writes out the root directory to a JS variable before including the JS file. Then you can use that variable to build the path in your JS file.
In Razor:
<script type="text/javascript"> var rootDir = "@Url.Content("~/")";</script><script src="@Url.Content("~/Scripts/MyScript.js")" type="text/javascript"></script>Then you can just build your url in your file like this:
var myurl = rootDir + "Home/Save/";