Hi Steve, DJ,

In my experience usually it *is* there by the time onComplete is
called, but just in case it is a matter of the browser not having
caught it's breath, Steve you can use Function#defer[1] to give the
browser a moment.  It may be overkill, but you could even encapsulate
this into a function:

function focusWithRetry(id, attempts) {
    var element;

    element = $(id);
    if (element) {
    else if (--attempts > 0) {
        focusWithRetry.defer(id, attempts);

But I wonder if it may be something else. If #defer doesn't do it, can
you create a minimal failing test case?[2]  You may figure it out by
doing that, or if not it'll give folks on the list something to get
mano-a-mano with.

[1] http://api.prototypejs.org/language/function.html#defer-instance_method
[2] http://proto-scripty.wikidot.com/self-contained-test-page

T.J. Crowder
tj / crowder software / com

On Sep 28, 7:08 am, DJ Mangus <d.man...@gmail.com> wrote:
> If the id 'editdescription' is added to the DOM it won't have been
> processed by the browser OnComplete. You will have to delay the
> function.
> Sent from my phone so pardon the spelling errors.
> On Sep 27, 2009, at 10:59 PM, Steve Marshall <ste...@westnet.net.au>
> wrote:
> > Hi all.  I'm brand-new to Prototype - just discovered it yesterday,
> > and I must say it feels like I have come home. It seems to be at just
> > the right level, and it just works (so far).  I'm a happy camper!
> > One minor thing - I tried using an Ajax.Updater, and when it completes
> > I want to set the focus to an entry field, but it isn't working.
> > Here's my Ajax.Updater:
> >  new Ajax.Updater('row'+code, 'svc/ajax.php', {
> >  parameters: {action: 'editlibcat', code: catcode},
> >  onComplete: function() {$('editdescription').focus();}
> >  });
> > This call sets a row in a table into editable form, and there's
> > another Updater that does the update - pretty standard stuff I'd
> > reckon.  There definitely IS an element with ID='editdescription' -
> > it's in the HTML that is returned from the Ajax call.  But focus never
> > gets set.  Everything else is perfect.  It must be me - what do I have
> > wrong?
> > Thanks again for Prototype - it's great!
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