[whatwg] Scripting Tweaks
Ian Hickson
ian at hixie.ch
Wed Apr 20 07:52:57 PDT 2005
On Wed, 20 Apr 2005, Dean Edwards wrote:
> >
> > So you'd submit to a hidden <iframe> and then disable the main page?
>
> Yep. The iframe then unlocks the page when submission is complete.
> Forgetting about iframes for a minute. This is analogous to disabling
> the entire application (not the chrome). Most GUI apps have this
> behavior to some degree.
Most GUI applications don't have the possibility of the network dying and
never re-enabling the page. :-)
> > > I can't think of one off the top of my head but I do find myself
> > > using it. It's certainly handy for passing string references around
> > > rather than object references.
> >
> > Wouldn't object references by lighter weight?
>
> Sometimes you want to construct eval code. A string reference is the
> only way to do this. Here is some sample code from IE7 that disables
> unsuccessful form controls on submission:
>
> [code]
> elem[i].disabled = true;
> setTimeout("document.all." + elem[i].uniqueID + ".disabled=false", 1);
> [/code]
>
> To do the same using object references you would have to create a
> closure. The string version is easier. As I say, I found myself using
> this surprisingly often. But then I do write some pretty freaky code...
> ;-)
I beg to differ:
elem[i].disabled = true;
setTimeout(function () { elem[i].disabled = false }, 1);
That looks a lot easier than the eval() to me. And shorter. And it will
have syntax errors caught at compile time.
Is there another use case? :-)
--
Ian Hickson U+1047E )\._.,--....,'``. fL
http://ln.hixie.ch/ U+263A /, _.. \ _\ ;`._ ,.
Things that are impossible just take longer. `._.-(,_..'--(,_..'`-.;.'
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