On Feb 15, 9:08 pm, kangax <kan...@gmail.com> wrote:
> On Feb 14, 7:25 pm, perk <phieduren...@gmail.com> wrote:
>
>
>
> > At first I thought this was a cross-browser issue of Prototype when
> > Form.Element.present() used on a select box returned "true" on Firefox
> > but not on IE when a non-empty OPTION field was selected.
>
> > Later then, I realized that this method was in fact just meant for
> > text inputs (as clearly stated in the documentation: "Returns true if
> > a text input has contents, false otherwise.").
>
> > Still, I think it would be nice to have the functionality of the
> > Form.Element.present method extended so that the following example
> > would work on all browsers the way I thought it would at first
> > ("false" when no or the empty option is selected, "true" otherwise):
>
> > <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
>
> > <html>
> >   <head>
>
> >     <title>Test</title>
> >     <script type="text/javascript" src="prototype.js"></script>
> >     <script type="text/javascript">
> >     document.observe("dom:loaded", function () {
> >       $("mySelect").observe("change", function () {
> >         alert($("mySelect").present() ? "select set" : "select not
> > set")
> >       });
> >     });
> >     </script>
>
> >   </head>
> >   <body>
>
> >     <select id="mySelect">
> >       <option></option>
> >       <option>test</option>
> >     </select>
>
> >   </body>
> > </html>
>
> > What do you think?
>
> The problem actually seems to be in `Element#getValue` returning
> "" (empty string) in Firefox (3.0.5), Safari (3.1) and Opera (9.61)
> for a value of a select element with `selectedIndex == -1` (i.e. the
> one with no options selected), while returning `null` in IE. If you
> look at the DOM L2 specs for `HTMLSelectElement` [1], you can see that
> `value` property is defined as that of type `DOMString`. `DOMString`
> in its turn is essentially a character string encoded in UTF-16 [2].
> This makes IE's `null` a bogus (what a surprise!).
>
> Unless I'm missing something, we should fix `getValue` foremost.
>
> Would you mind filing a ticket?
>
> [1]http://www.w3.org/TR/DOM-Level-2-HTML/html.html#ID-94282980
> [2]http://www.w3.org/TR/DOM-Level-2-Core/core.html#DOMString
>
> --
> kangax

I couldn't reproduce IE returning null on getValue.

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