The JavaScript Gurus Amongst us please come here!!!!!!!!!!!!!!!

Okay im sure this is easy but i cant find out how to do it...

I want to have two select boxes: when you select say computers from select one, select two will display the sub-categories for computers, ie internet, hardware, software etc.

I know how to add options to a select box, but how on earth do you get rid of them???

Any help what so ever so greatfully recieved!..

TIA

I made a site just like this for a client. Here's the code you need, it's a little For Loop:

Code:

---

for (var i = document.yourformname.yourselectname.options.length; i > 0; i--)
    document.form1.product.options[i] = null;

---

That's it! Let me know if you need any more help.

Thankyou that is almost working...
Escuse me for my ignorance but i dont often do any client side:

I have this function
function dodelete(){
for (var i = document.all.cats.options.length; i > 0; i--)
document.all.cats.options = null;
}

and this form

<FORM NAME="all">
<SELECT name="cats">
<option value=1>Option One</option>
<option value=1>Option One</option>
</SELECT>
<input type=button onclick="dodelete()">

I get the error "not implimented" on the line with document.all.cats.options = null;

Any ideas what i might be doing wrong?

Cheers

Hey madonions,

You might wanna try renaming your form because when IE tries docunemt.all, it is probably not trying ot access the form called all.


Then, you could use:


for (j=0; j < document.formName.selectName.length; j++){
document.formName.selectName.options[j] = null;
}


and that should work.

aDog :cool:

I figured out whathappenned and why aepstein's code was wrong:

At first, I did the same as him, but noticed my post was screwed up. He used the VB code to italicize something. Anyway, I just changed mine to [j] so it wouldn't italicize stuff and used the j variable in the for loop.

aDog :cool:

haha, thanks, good catch there AriellaDog. Hope you got it working Mad-Onion.

Thanks to both of you it is now working!

Thanks Again!!!