:) in effect i've investigated but i'm not a guru of js so i need some
help ... thanks.
last but not least :D can you explain this code:
self[callback] = window[callback];
window[callback] = (function(callback){
return function(data){
(window[callback] = self[callback])(data);
delete self[callback];
clearTimeout(timer);
};
})(callback);
On 30 Gen, 23:57, Ricardo Tomasi <ricardob...@gmail.com> wrote:
> Ah, an oversight of mine. I forgot to add the parameter when rewriting
> the callback.
>
> Fixed as you can see athttp://jsbin.com/eliwu
>
> Never use someone else's code without inspection ;)
>
> On Jan 30, 4:34 pm, Stefano Corallo <stefan...@gmail.com> wrote:
>
> > On 30 Gen, 19:25, Ricardo Tomasi <ricardob...@gmail.com> wrote:
>
> > > We can't access the success function of the $.ajax call without
> > > messing with jQuery source code, because the vars that name it are
> > > inside the jQuery function scope.
>
> > ok
>
> > > In JSONP, the JSON object is passed as an argument to the callback
> > > function. In the example I posted:
>
> > > jsonFlickrFeed = function(data){ //do something with data };
>
> > i've tried but data is always undefined,take a look:
>
> >http://jsbin.com/ajimu/edit
>
> > > On Jan 30, 7:28 am, Stefano Corallo <stefan...@gmail.com> wrote:
>
> > > > On 28 Gen, 17:03, Ricardo Tomasi <ricardob...@gmail.com> wrote:
>
> > > > > It isn't possible to have error/success callbacks for JSONP. You can't
> > > > > cancel the request either. Once you add a <script> tag to the head,
> > > > > the browser fires a GET request and it can't be interrupted - even if
> > > > > you remove the script before the response comes, the script will still
> > > > > run.
>
> > > > ok. got it!
>
> > > > > (the only event that fires on the script tag is 'onload', but it only
> > > > > tells you if the content has successfully loaded, not the opposite.
> > > > > There is no way to know if an error happened)
>
> > > > > Also, you're misunderstanding the way JSONP works - there is no need
> > > > > for a 'success' function, that is the callback function which will be
> > > > > called when the response is loaded. Thats 'jsonFlickerFeed' in my
> > > > > example.
>
> > > > Ok i've understood how jsonp work, but there's something that i can't
> > > > understand.
> > > > I try to explain better i can (sorry for my bad english)
>
> > > > 1)Using the $.ajax method, an example:
> > > > $.ajax({
> > > > type: methodType,
> > > > url: theURL,
> > > > data: params,
> > > > dataType:"jsonp",
> > > > success: function(data){
> > > > console.log("onClick success");
> > > > }
> > > > });
>
> > > > in the jquery core is built a temporary jsonp function to handle the
> > > > data returned by the server, if the succes function is defined the
> > > > temporary function call the succe function and pass the returned
> > > > data ... specifically at line 3314 of the jquery.1.3.1.js :
>
> > > > // Handle JSONP-style loading
> > > > window[ jsonp ] = function(tmp){
> > > > data = tmp;
> > > > success();
> > > > complete();
> > > > // Garbage collect
> > > > window[ jsonp ] = undefined;
> > > > try{ delete window[ jsonp ]; }
> > > > catch(e){}
> > > > if ( head )
> > > > head.removeChild( script );
> > > > };
>
> > > > the tmp is the data returned by the server.
>
> > > > Now in your example you use the jsonFlickrFeed function but without
> > > > handling the returned data from the server:
>
> > > > jsonFlickrFeed = function(){ alert('flickr loaded'); };
> > > > $.jsonp({
> > > > url: 'http://api.flickr.com/services/feeds/photos_public.gne?
> > > > tags=hackdayindia&lang=en-us&format=json&callback=jsonFlickrFeed',
> > > > timeout: 10,
> > > > onTimeout: function(url){ console.error('jsonp script timed out:
> > > > '+url) }
>
> > > > });
>
> > > > how to access the data returned from the server? How to modify the
> > > > $.jsonp function to call the success function defined and pass in the
> > > > data returned from the server ... this is sure possible case jquery in
> > > > $.ajax call do it, but i don't know how :-/
>
> > > > Many thanks, really!
>
> > > > I hope i've been clear, sorry for my english!
