ASP.NET MVC3 & jquery.getJSON not making request - asp.net-mvc-3

Question

I am working on a MVC 3 site and everything was working until I util I upgraded to jquery1.7.1 using nuget. Now my $.getJSON calls are not making the request to the server. Fiddler does not show a request being made back to the server and code before and after the $.getJSON is executing. Any ideas would be appreciated.
Here is a sample client script:
var srvBaseUrl = "http://localhost:15627/Home/";
$.getJSON(srvBaseUrl + "GetInfo", { 'id': 1 }, function (allData) {
alert(allData);
});
and the corresponding server code:
[HttpGet]
public ActionResult GetInfo(int id)
{
return Json(id, JsonRequestBehavior.AllowGet);
}
I tested that the server code works building up the request in Fiddler.

Answer 1

I had a similar problem, it turned out that JQuery was caching the results. This would explain your comments above that it started working after you made a change.
If you have a look at http://api.jquery.com/jQuery.getJSON/, you will see that $.getJSON is just shorthand for
$.ajax({
url: url,
dataType: 'json',
data: data,
success: callback
});
If you use the $.ajax instead of the shorthand $.getJSON you can disable caching using the cache parameter, meaning you should be able to replace your code with:
$.ajax({
url: srvBaseUrl + "GetInfo",
dataType: 'json',
data: { 'id': 1 },
success: function (allData) { alert(allData); },
cache: false
});

Answer 2

Nuget is not going to update your Views/Shared/_Layout.cshtml file with the updated reference to the latest version of jQuery installed. You will need to update this yourself:
<script src="#Url.Content("~/Scripts/jquery-1.7.1.min.js")" type="text/javascript"> </script>
EDIT
Assuming that is all in order like you said, make sure your getJSON call is inside a document ready function as it work as-is for me. I would however change how you are building the Url to use the helper method instead:
<script type="text/javascript">
(function ($) {
$.getJSON('#Url.Action("GetInfo")', { 'id': 1 }, function (allData) {
alert(allData);
});
})(jQuery);
</script>
This tested out fine in a stock ASP.NET MVC3 Internet Application template project using your controller action as-is.