[Pas2js] page reload when server restarted not 100% reliable

[Luca Olivetti]

El 22/9/25 a les 18:44, Luca Olivetti via Pas2js ha escrit:
> El 22/9/25 a les 18:33, Michael Van Canneyt ha escrit:
> 
>>> I'd like the exception to be propagated to the outer code so my 
>>> try..catch would work.
>>
>> Did you try putting the above in the load ?
>>
>> window.addEventListener("load", function () {
>>    if (typeof rtl === 'undefined' || typeof QRCode === 'undefined') {
>>      console.log('rtl o QRCode no definidos, recargo pagina');
>>      setTimeout(function() { location.reload(); }, 5000);
>>    } else {
>>      try {
>>        rtl.run();
>>      } catch(err) {
>>        console.log('error '+err.message+', recargo pagina');
>>        setTimeout(function() { location.reload(); }, 5000);
>>      }
>>    }
>> });
> 
> Again, I'm not 100% sure but I think I tried everything at the time.
> In any case in the scenario I described It shouldn't make a difference: 
> something is showing the exception instead of being propagated to my 
> try..catch block.
> 

The "trick" is to catch the exception inside the pas2js application, 
since TBrowserApplication.OnException doesn't handle the exception, I 
had to override the ShowException method.

procedure TMyApplication.ShowException(E: Exception);
Var
   S : String;
   T : TTimer;

begin
   if (E<>nil) then
     S:=E.ClassName+': '+E.Message
   else if ExceptObjectJS then
     S:=TJSObject(ExceptObjectJS).toString;
   S:='Unhandled exception caught: '+S;
   Console.Log(s);
   //ha llegado a inicializar
   if Assigned(errorScreen) then
     showErrorScreen(S);
   T:=TTimer.Create(nil);
   T.Interval:=5000;
   T.OnTimer:=@reconnect;
   T.Enabled:=true;
end;


Now I'll have to decide if I still have to check for rtl === 'undefined'

Bye
-- 
Luca