MVC3 JQuery getJSON returns error s is undefined

Question

I have a function calling a controller method in MVC3.

$.getJSON('@Url.Action("LoadCitiesByProvince", "Property")', { id: 1}, function (msg) {
    alert("Data Saved: " + msg);
});

The final rendered Javascript:

$.getJSON('/MySite/Property/LoadCitiesByProvince', { id: 1 }, function (msg) {
alert("Data Saved: " + msg);
});

Firebug reports the following error:

s is undefined
[Break On This Error]   

callbackContext = s.context || s,

When I debug my controller method is never hit. I have triple checked the controller method even calling it manually via the url in my browser (in whitch case it works as expected). This is my controller method:

[AcceptVerbs(HttpVerbs.Get)]
public JsonResult LoadCitiesByProvince(string id)
{
    var modelList = this.GetCities(Convert.ToInt32(id));

    var modelData = modelList.Select(m => new SelectListItem()
    {
        Text = m.Description,
        Value = m.Id.ToString(),

    });

    return Json(modelData, JsonRequestBehavior.AllowGet);
}

At this point all I want to see is my controller method being hit and data coming back.

It looks fine to me. Are you sure that the problem is related to the getJSON call? Do you not get this error if you comment it out? — Jake Feasel
– Jake Feasel, Commented Jan 30, 2012 at 23:29
If you're seeing that error in Firebug, it's because you have an error somewhere else on your page. Your getJSON call is just fine. — Brent Anderson
– Brent Anderson, Commented Jan 30, 2012 at 23:30
@BrentAnderson Thanks, that helped me to look in the right place! — Tjaart
– Tjaart, Commented Jan 30, 2012 at 23:47

Community · Accepted Answer · 2017-05-23 12:03:32Z

1

The problem was with the jquery vsdoc javascript file included with MVC3. It causes this error. Simply Changing the javascript include line:

<script src="@Url.Content("~/Scripts/jquery-1.5.1-vsdoc.js")" type="text/javascript"></script>

to

<script src="@Url.Content("~/Scripts/jquery-1.5.1.js")" type="text/javascript"></script>

Here is a link to a question about this issue:

Updating vsDoc to 1.5 breaks all javascript

edited May 23, 2017 at 12:03

CommunityBot

11 silver badge

answered Jan 30, 2012 at 23:47

Tjaart

4,1713 gold badges43 silver badges62 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

MVC3 JQuery getJSON returns error s is undefined

1 Answer 1

Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Linked

Related