You're still expecting things to happen in the wrong order. It's *inside the
callback* that the data becomes available, and this is
long after isTracked() returns. Try this instead:
var r;
function isTracked(personcode, callback) {
$.get('trackstudent/istracked.php',{'personcode': personcode},
callback);
}
$(document).ready(function() {
isTracked('10591891',function(data) {
r=data;
alert(r);
});
});
If that doesn't quite make sense, sprinkle the code with console.log()
statements, run it in Firefox with Firebug enabled, and watch
the console to see the order of execution.
-Mike
> -----Original Message-----
> From: jquery-en@googlegroups.com
> [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED]
> Sent: Thursday, September 27, 2007 7:01 AM
> To: jQuery (English)
> Subject: [jQuery] Re: functions after $.get work strange
>
>
> > function isTracked(personcode, callback) {
> > $.get('trackstudent/istracked.php', {'personcode': personcode},
> > callback);
> >
> > }
> >
> > isTracked(code, function(tracked) {
> > // do something with tracked, exactly as you would have
> done above.
> >
> > });
>
> I thought that I understand that but Im doing something wrong.
> (istracked.php has 'true' or 'false')
> -------
> var r;
>
> function isTracked(personcode, callback) {
> $.get('trackstudent/istracked.php',{'personcode':
> personcode}, callback);
> return r;
> }
>
> $(document).ready(function() {
>
> alert(isTracked('10591891',function(data) {
> r=data;
> }));
>
> });
> ----
> istracked.php returns 'true'
> result of alert: undefined
> should be: true
>
> Callback is still running last .
> I have no idea for that :/
>
> TIA
>
> Michael
>
