jQuery innerWidth() throws ownerDocument is null

[Justin Nel]

jQuery 1.5.1 AND 1.5.2 (jsFiddle only offers 1.5.1 at the moment) Firefox 4.0 Windows 7 Ultimate x64

I would have expected a value from $(document).innerWidth(), but instead it throws an exception.

Exception thrown: TypeError: elem.ownerDocument is null

Example code:  http://jsfiddle.net/PwRgy/

If you need more information, please ask.

[jboesch]

Wondering if this is invalid. If you read  http://api.jquery.com/innerWidth/ it says: "This method is not applicable to window and document objects; for these, use .width() instead."

[timmywil]

So it does. Now that I think about it, getting innerWidth from document doesn't make sense because the document itself can't have padding.