[Seaside] Re: Re: Re: Re: SUPeriodical - changing the frequency onthe fly

Frank Sukhu fsukhu at gmail.com
Fri Aug 25 15:31:55 UTC 2006

Thanks for your help - of course it worked perfectly.

There a few bits that I still do not understand.

1. Where does  the "arguments[0]"  - come from?  who fills in the array

2. I see in your example code that you have a line of debugging code:
'console.log("change", arguments)'.  Does this result in the information
being written tothe Javascript console?  This would be so useful but in my
environment it complains about "console".  How do I get this to work?

I can continue my work witout the answers to these questions but it would be
nice to know how this works.

Again, many thanks,

"Lukas Renggli" <renggli at gmail.com> wrote in message
news:67628d690608240956s6498a7dal939fc42edc2a85a6 at mail.gmail.com...
> > Is there any way to do what I want using Scriptaclous?
> Sure, try something like this:
> html div
> id: 'time';
> script: (html periodical
> frequency: frequency;
> callback: [ :r | r render: Time now ];
> assignTo: 'updater');
> with: Time now.
> html div id: 'track'; with: [ html div id: 'handle' ].
> html script: (html slider
> handleId: 'handle';
> trackId: 'track';
> value: frequency;
> range: (1 to: 10);
> onChange: (SUStream on: 'console.log("change",
> arguments);updater.stop();updater.frequency=arguments[0];
> updater.start();'))
> The last part is slightly ugly as I wrote some bare JavaScript. You
> could archive exactly the same by composing a script like:
> html javascript
>      add: (html periodical
>          alias: 'periodical';
>          stop):
>      add: (html periodical
>          ....
> but this gets too cumbersome in my opinion. I usually suggest that you
> write more complicated functionality in bare JavaScript (use #script
> or a class extension to SULibrary) and call it from your code using
> simple configurable objects. This scales usually much better.
> Lukas
> --
> Lukas Renggli
> http://www.lukas-renggli.ch

More information about the Seaside mailing list