$.AJAX changed the post content if include "??" (2 Question mark)

[yehuicn@…]

Version: 1.7.1/1.8.0

            $.ajax({
                url: '/',
                dataType: 'json',
                data: '??',
                type: 'post',
                success: function(data){
                },
                error: function(XMLHttpRequest, textStatus, errorThrown){
                }
            });

Please note that the post data including ?? (2 Question marks). It seems jquery change ?? as "jQuery1710291590959013191_1345184415274" (I think it is a callback name) before post to server.
The ?? was replaced on 7981th line of jquery-1.8.0.js

more information :
browser : firefox 14.0.1
OS : win7(nothing is related to OS)

THANK YOU

[jaubourg]

?? is used as the callback name placeholder in the data for jsonp requests. So, finding it, jQuery will "promote" your request as jsonp.

Two solutions here:

• URL encode your data first using encodeURIComponent (as you should by default), see  https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/encodeURIComponent
• if your data is not supposed to be URL encoded, set the contentType option accordingly (for instance "application/json") see  http://api.jquery.com/jQuery.ajax/

[doherty@…]

Replying to jaubourg:

• if your data is not supposed to be URL encoded, set the contentType option accordingly (for instance "application/json") see  http://api.jquery.com/jQuery.ajax/

We are setting the content type to "application/json; charset=utf-8" and the data is still being mangled:

    var form = new Object();
    form.p_id = '??';

    $.ajax({
        type: 'POST',
        url: ...,
        data: JSON.stringify( form ),
        processData: false,
        success: ...,
        error: ...,
        dataType: 'json',
        contentType: "application/json; charset=utf-8"
    });

[timmywil]

#12878 is a duplicate of this ticket.