Ticket #4110 (closed bug: fixed)
beforeSend is ignored in Firefox 3 with JQuery 1.3.1
| Reported by: | radu3000 | Owned by: | |
|---|---|---|---|
| Priority: | undecided | Milestone: | 1.3.2 |
| Component: | ajax | Version: | 1.3.1 |
| Keywords: | beforeSend ajax request header | Cc: | radu_marian@… |
| Blocking: | Blocked by: |
Description
I am not able to set any request headers inside beforeSend. See complete example below:
<html> <head> <title>Hello.html</title> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript">
$.ajax({
url: " http://api.cnet.com/restApi/v1.0/techProduct?productId=32069546&iod=none&viewType=json&partKey=19926949750937665684988687810562", dataType: "jsonp", beforeSend: function(xhr){
alert('help - i am ignored'); xhr.setRequestHeader('myCustomHeader', '100');
}, success: function(data){
alert(data.CNETResponse.TechProduct.EditorsRating.$);
$("div#html").append(data.CNETResponse.TechProduct.EditorsRating.$);
}
});
</script> </head> <body> <fieldset><legend>Loaded from an test.html file</legend> <div id="html"> <h1>Hello!</h1> </div> </fieldset> </body> </html>
Change History
comment:2 Changed 4 years ago by dmethvin
- Status changed from new to closed
- Resolution set to fixed
I have updated the documentation to reflect the implementation. In particular, since they are implemented via a script tag the cross-domain requests do not provide an XHR object in their callbacks and do not fire beforeSend or processData.
comment:3 Changed 4 years ago by dandv
- Status changed from closed to reopened
- Resolution fixed deleted
If JSONP requests are done via <script src=>, and are not using XMLHttpRequest at all, is there a use case for providing the 'jsonp' option for jQuery.ajax?
I might be wrong, but when doing a JSONP request, there's nothing to specify to jQuery.ajax that one can't do in jQuery.getJSON. In that case, the 'jsonp' option is confusing (I came here for the same reason, that beforeSend was never called).
Please follow the bug reporting guidlines and use jsFiddle when providing test cases and demonstrations instead of pasting the code in the ticket.
JSONP is not using XMLHttpRequest at all - like the following post says already: http://groups.google.com/group/jquery-dev/browse_thread/thread/e7eb4a23eef342fb
Too bad there is not enough documentation in the jQuery API.
Regards, Radu.