If you're going to do cross-domain calls you can't do a POST, only a
GET. I think even if you specify POST as your type jQuery will
convert it to a GET if your datatype is jsonp (check their doc but I'm
pretty sure that's the case).
As for WCF the key is just making sure that you wrap your return in
the callback method and write it to the Response. In other words, you
can't simply have a WCF endpoint that returns a json-formatted
object. Instead you need to write something like
"callbackMethodName(" + yourJSONObject + ");" to the Response. Once
you've done this jQuery will execute the callback call, in which it
will do an eval() on yourJSONObject and then call the success method,
passing it the JSON object in the data parameter. At that point you
will have dot notation on your JSON object.
On Oct 22, 7:31 pm, RWF <[EMAIL PROTECTED]> wrote:
> I am using WCF too, have you done projects that require an $.ajax POST
> request to a WCF service cross site? If you have, how did come up
> with a server proxy to allow for cross site communication?
>
> On Oct 10, 2:01 pm, tenaciousd <[EMAIL PROTECTED]> wrote:
>
> > Nevermind. The fundamental issue was that the json object wrapped in
> > the callback name does, in fact, need to be written to the Response.
> > I'm an idiot. Anyway, it's working now. If others hit the same
> > jquery ->jsonp-> wcf issue let me know.
>
> > On Oct 10, 12:07 pm, tenaciousd <[EMAIL PROTECTED]> wrote:
>
> > > I'm using jQuery $.ajax to make a cross-domainjsonpcall to a WCF
> > > service. The call is working fine, entering the service endpoint, but
> > > the callback method never fires. I've tried many permutations of
> > > changes and can't seem to get this to work.
>
> > > The WCF endpoint is returning a string (NOT doing a Response.Write)
> > > that contains a json object inside the callback wrapper (e.g.
> > > "jsonp123( {"Author":"John Doe","Price":"$35.90"} )" ) and the content-
> > > type returned from the service is application/json; charset=utf-8.
>
> > > $.ajax call is below. Any help is much appreciated.
>
> > > var data = {"ISBN" : $("#isbn1").val()};
>
> > > $.ajax({
> > > type: "GET",
> > > cache: false,
> > > url: "http://localhost:63132/Widget.svc/GetProductInfo";,
> > > scriptCharset: "utf-8",
> > > dataType: "jsonp",
> > > data: data,
> > > success: function(data, textStatus){
> > > alert("success");
> > > },
> > > error: function(XMLHttpRequest, textStatus, errorThrown){
> > > alert('error');
> > > }
> > > });
