hi T.J.,
i'll follow your advices and the API Docs ones "Since synchronous
usage is rather unsettling, and usually bad taste, you should avoid
changing this. Seriously." ;)
it helps a lot,
many thanks :)
On Jun 30, 12:06 pm, "T.J. Crowder" <[EMAIL PROTECTED]> wrote:
> Hi,
>
> Yes, you can set/modify global variables in any function in
> JavaScript. Did you try it and have a problem, or...?
>
> I should note that your code above won't work as you expect it to,
> because the request is asynchronous. So the code checking whether foo
> is 1 runs immediately, before the request has a chance to finish.
> Once the request finishes and the onComplete handler fires, though,
> foo will be set to 1. (You can make the request synchronous, but it's
> not a great idea; better to put your logic in the various completion
> handlers.)
>
> Hope this helps,
> --
> T.J. Crowder
> tj / crowder software / com
>
> On Jun 30, 9:51 am, ljundie <[EMAIL PROTECTED]> wrote:
>
> > hi!
>
> > i still dont manage to do everything i need with prototype callbacks.
> > one thing i'd like to get is to be able to change a global value
> > within a callback, is it possible?
>
> > an example better than thounsand words ;)
> > the code would be like:
>
> > <script type="text/javascript">
>
> > var foo=0;
>
> > function loadRSS() {
> > var url = "feeds.xhtml";
> > var myAjax = new Ajax.Request( url, {
> >
> > method: 'get',
> >
> > parameters: '',
> >
> > onComplete: processRSS
> >
> > });
> > }
>
> > function processRSS(xmlHttpRequest, responseHeader) {
> > foo=1;
> > }
>
> > if (foo==1){
> > alert ('yeah!');
> > }
>
> > </script>
>
> > many thanks in advance for every help
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