Hey Joseph,
2011/3/17 Joseph VanAndel <[email protected]>:
> I'm using Wt 3.1.8 with Firefox 3.6.15 on Mac OS 10.6.6, and am encountering
> Wt internal errors.
> My application requires the user to login, and then creates various windows,
> including
> a log window that I want to auto-scroll as I append messages. Koen Deforche
> advised me to do the following:
> =====================================================
> /*
> * Little javascript trick to make sure we scroll along with new content
> */
> WApplication::instance()->doJavaScript(messages_->jsRef() + ".scrollTop += "
> + messages_->jsRef() + ".scrollHeight;");
> =====================================================
>
>
> The problem appears to be that if I destroy this window, and create another
> one when the user logs in again, the javascript added with 'doJavaScript()'
> is trying to reference a non-existent window.
>
> Having called the doJavaScript() method, is there any way to disable the
> javascript that was attached to the event with doJavaScript()?
No. In that case you should make sure the JavaScript does not fail on
a non-existing DOM node:
"if (" + messages_->jsRef() + ") { ... }"
Regards,
koen
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