Thanks for the code Klaus. Nice idea...
When I tried this, the ajax call worked but the xhr.onreadystatechange is
'undefined' so I cannot do anything with it. (I got the samer error when
trying to use a function in the 'beforeSend' ajax argument.)
Does Jquery definitely return the XMLHTTP object? Or something else?
Cheers,
George
Klaus Hartl wrote:
>
> George Adamson schrieb:
>> Hi folks,
>>
>> Anyone know if it is possible to add a custom event handler for the
>> onreadystatechange events of JQuery AJAX calls?
>>
>> I'm accessing a url that is slow to complete but does add to its output
>> as
>> it progresses.
>> It would be nice to be able to catch each new fragment to inform the user
>> of
>> progress.
>>
>> I've experimented with the 'beforeSend' ajax argument to fiddle with the
>> XMLHttpRequest object's properties before making the ajax call but had no
>> luck.
>>
>> Many thanks,
>>
>> George
>
> $.ajax returns the XmlHttpRequest object, thus you can do:
>
> var xhr = $.ajax({ ... });
> xhr._cachedOnreadystatechange = xhr.onreadystatechange;
> xhr.onreadystatechange = function() {
> xhr._cachedOnreadystatechange();
> // do something else
> };
>
>
> -- Klaus
>
>
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>
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