[thelist] check existence of a javascript function

[Chris Blessing]

Emily-

Please provide the code for the function you are trying to check the
existence of.  Thanks!

Chris Blessing
webguy at mail.rit.edu
http://www.330i.net

> -----Original Message-----
> From: thelist-admin at lists.evolt.org
> [mailto:thelist-admin at lists.evolt.org]On Behalf Of Emily E Liang
> Sent: Thursday, January 24, 2002 11:10 AM
> To: thelist; Emily E Liang
> Subject: [thelist] check existence of a javascript function
>
>
> Hi,
>
> I'm trying to figure out how to check the existence of a javascript
> function in the opener window.  I tried all of the following and none
> seemed to work.  All returned a javascript error of "opener.getAppId()
> is not a function" error when the junction does not exist.  Any help is
> greatly appreciated!!!
>
> 1) if (opener.getAppId() == undefined) {
>         //do something else
>     } else {
>         appId = opener.getAppId();
>     }
>
>
> 2) if (!opener.getAppId) {
>         //do something else
>     } else {
>         appId = opener.getAppId();
>     }
>
> 3) if (opener.getAppId() == null) {
>         //do something else
>     } else {
>         appId = opener.getAppId();
>     }
>
> Thanks,
>
> Emily
>
>
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