How to get the size of a SELECT element?

[laredotornado]

Hi,

What is a cross-browser way to get the size (number of visible items)
of a SELECT element? If that is not possible, how would I determine
if the element was of a MULTIPLE type or not?

Thanks, - Dave

[Evertjan.]

la***********@zipmail.com wrote on 12 mrt 2007 in comp.lang.javascript:

What is a cross-browser way to get the size (number of visible items)
of a SELECT element?

If you mean the number of select options:

var n = document.getElementById('mySelectId').options.leng th

If that is not possible, how would I determine
if the element was of a MULTIPLE type or not?

If the select is multiple?

var m = document.getElementById('mySelectId').multiple
IE7 and FF2 tested.

--
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)

[Matt Kruse]

Evertjan. wrote:

la***********@zipmail.com wrote on 12 mrt 2007 in
comp.lang.javascript:

>What is a cross-browser way to get the size (number of visible items)
of a SELECT element?

If you mean the number of select options:
var n = document.getElementById('mySelectId').options.leng th

I think he meant the number of _visible_ items. Meaning, how many fit within
the dropdown window area.
The answer, of course, is that there is no way to find this.

>If that is not possible, how would I determine
if the element was of a MULTIPLE type or not?

If the select is multiple?
var m = document.getElementById('mySelectId').multiple

I would prefer just to look at document.getElementById('mySelectId').type

--
Matt Kruse
http://www.JavascriptToolbox.com
http://www.AjaxToolbox.com

[Jim Land]

"Matt Kruse" <ne********@mattkruse.comwrote in
news:et********@news3.newsguy.com:

I think he meant the number of _visible_ items. Meaning, how many fit
within the dropdown window area.

var s = document.getElementById('mySelectId').size