[Javascript] Changing a Combobox content

[Henrique Rennó]

Hello Nick!!!

Thanks for your reply. I just changed the property "value" to "text" and it
worked fine.

Regards

On 10/28/06, Nick Fitzsimons <nick at nickfitz.co.uk> wrote:
>
> On 27 Oct 2006, at 20:57:33, Henrique Rennó wrote:
>
> > Hello!
> >
> > I did a map over an image and every time I click on a mapped point
> > it changes the content of a combobox (select). It works fine on
> > firefox but internet explorer clears the combo's content every time
> > a mapped point is clicked. Is it a problem that can be solved?
> >
> > This is what I did:
> >
> > A function to change the combo's value:
> >
> > function change(newvalue)
> > {
> > document.form_name.select_name.value = newvalue;
> > }
> >
>
> Unlike something like a text input field, a select doesn't have a
> value: it has a selected option, which provides the value. To set the
> selected item, you can do one of two things; pass the number of the
> option you want to select:
>
> function setSelectedOption(index) {
>     document.form_name.select_name.selectedIndex = index;
> }
>
> or you can scan the options array looking for the item with the
> chosen value:
>
> function setSelectedOptionByValue(value) {
>     var select = document.form_name.select_name; // getting it into a
> variable makes it faster
>     for (var option = 0; option < select.options.length; option++) {
>        if (select.options[option].value == value) {
>           select.selectedIndex = value;
>           break;
>        }
>     }
> }
>
> (I haven't tested any of this, but it should work :-)
>
> HTH,
>
> Nick.
> --
> Nick Fitzsimons
> http://www.nickfitz.co.uk/
>
>
>
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>



-- 
Henrique
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