2009/2/16 kangax <kan...@gmail.com>:
>
> On Feb 16, 11:10 am, Richard Quadling <rquadl...@googlemail.com>
> wrote:
>> Hi.
>>
>> I want to set an error message for 20 seconds ...
>>
>> $('sessionError').update(o_E.responseText).show().hide.delay(20);
>>
>> The message is displayed correctly.
>>
>> But not hidden again after 20 seconds or so.
>>
>> Instead, I'm getting an error ...
>>
>> element.style is undefined.
>>
>> If I ...
>>
>> $('sessionError').update('An error').show().hide(20);
>>
>> at the command prompt in FB, then no problems.
>>
>> It seems delay is not working as I would expect.
>>
>> If I ...
>>
>> $('sessionError').update('An error').show().hide.delay(20);
>>
>> at the command prompt I get a number which I assume is the id of the
>> timer so I can cancel it.
>>
>> Example online (requires a javascript console).
>>
>> Go tohttp://www.prototypejs.organd enter the following code into
>> your javascript console.
>>
>> $('header').update('Prototype is quite good!').show().hide.delay(2)
>>
>> You will see the timer ID (4 in my case) and then the error message
>> (after a little while).
>>
>> >>> $('header').update('Prototype is quite good!').show().hide.delay(2)
>>
>> 4
>> $(element).style is undefined
>> [Break on this error] $(element).style.display = 'none';
>> prototype.js (line 1349)
>>
>
> The problem is that `hide` is not being called in a context of an
> element (but rather in a context of what `delay` specifies, which is a
> `hide` function itself). You can work around it by binding `hide` to
> `el` - in other words, making sure `hide` is to be called in a context
> of `el`:
>
> var el = $('header');
> el.update('Prototype is quite good!').show();
> el.hide.bind(el).delay(2);
>
> Even better, you can take advantage of `delay` being able to `curry`
> arguments of a reciever function:
>
> var el = $('header');
> el.update('Prototype is quite good!').show();
> Element.hide.delay(2, el);
>
> You can of course shorten it up further to something like:
>
> Element.hide.delay(2, $('header').update('Prototype is quite
> good!').show());
>
> but I wouldn't, as it becomes rather cryptic : )
>
> --
> kangax
> >
>Ah. I keep thinking ... Element.hide(el); is the same as el.hide(); That's where I've gone wrong. I think. -- ----- Richard Quadling Zend Certified Engineer : http://zend.com/zce.php?c=ZEND002498&r=213474731 "Standing on the shoulders of some very clever giants!" --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Prototype & script.aculo.us" group. To post to this group, send email to prototype-scriptaculous@googlegroups.com To unsubscribe from this group, send email to prototype-scriptaculous+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/prototype-scriptaculous?hl=en -~----------~----~----~----~------~----~------~--~---
