Netscape 7.1 - why is event.preventDefault undefined

[Mike]

I have a textbox where I'm trying to restrict which keys a user can
hit.
My syntax is onKeyDown="myFu nction(event)"
To restrict the keys, Netscape requires the event.preventDe fault
method. Problem is, I'm getting and "undefined" for that method. The
event object is ok as I'm able to get event.keyCode fine, but nothing
for preventDefault.

I've even tried something as simple as
onKeyDown="aler t(event.prevent Default())", but still get undefined.
Any ideas why?

Thanks,
Mike

[Martin Honnen]

Re: Netscape 7.1 - why is event.preventDe fault undefined



Mike wrote:
[color=blue]
> I have a textbox where I'm trying to restrict which keys a user can
> hit.
> My syntax is onKeyDown="myFu nction(event)"
> To restrict the keys, Netscape requires the event.preventDe fault
> method. Problem is, I'm getting and "undefined" for that method. The
> event object is ok as I'm able to get event.keyCode fine, but nothing
> for preventDefault.
>
> I've even tried something as simple as
> onKeyDown="aler t(event.prevent Default())", but still get undefined.
> Any ideas why?[/color]

Well,
alert(event.pre ventDefault())
calls the method and then alerts its result and as the method is not
supposed to return anything the result of the call is the value
undefined and the alert shows just that.

As for cancelling keys with Netscape 7 or Mozilla you can only do that
in the keypress event handler, it doesn't work for the keydown event
handler so I am sure
<input onkeypress="if (event.keyCode == 'A'.charCodeAt( )) {
if (event.preventD efault) {
event.preventDe fault();
}
return false;
}
else {
return true;
}"
will do.


--

Martin Honnen

http://JavaScript.FAQTs.com/

[DU]

Re: Netscape 7.1 - why is event.preventDe fault undefined

Mike wrote:
[color=blue]
> I have a textbox where I'm trying to restrict which keys a user can
> hit.
> My syntax is onKeyDown="myFu nction(event)"
> To restrict the keys, Netscape requires the event.preventDe fault
> method. Problem is, I'm getting and "undefined" for that method. The
> event object is ok as I'm able to get event.keyCode fine, but nothing
> for preventDefault.
>
> I've even tried something as simple as
> onKeyDown="aler t(event.prevent Default())", but still get undefined.
> Any ideas why?
>
> Thanks,
> Mike[/color]

The preventDefault( ) method works accordingly in NS 7.1. Maybe we could
figure out your problem if we could examine your page; what's the url?

DU