Situation:
Invoking CKEDITOR in jQuery dialog box (many challenges here).
My specific problem is that when I test for the existence of a CKEDITOR instance, I always get an error thrown.

BROWSERS tested: Firefox 21, IE 9, Safari 5.1.7

The error: Error: TypeError: CKEDITOR.instance is undefined

All of these ways of testing for the CKEDITOR instance always throw a javascript error:

if(! CKEDITOR.instance['editor']){

if(CKEDITOR.instance['editor']){

if(! typeof CKEDITOR.instance['editor'] == "undefined"){

if(! typeof(CKEDITOR.instance['editor']) == "undefined"){

if(typeof CKEDITOR.instance['editor'] != "undefined"){

if(typeof CKEDITOR.instance['editor'] !== "undefined"){

if(typeof CKEDITOR.instance['editor'] === "undefined"){

Of course I scoured StackOverflow before making this post. I have tried every combination of "typeof" and "undefined" that has been suggested on StackOverflow.

How can I test for the existence of the object instance if I get an error in the very testing for the existence of the instance? A conundrum!