jQuery: determine if at least one child in div container is visible
===

What is the quickest way to determine if at least one child `div` in a `div` container is visible?

I've been using this:

 `if ($this.children('div:visible').length) {...` 

but it's slow because it examines all the children (of which there is a lot). 

I'm guessing the fastest method will stop searching as soon as it's found the first visible element, but whatever is fastest wins :)

BTW:

>   My actual situation is a major container which contains about 100
> minor containers, each of which contain up to 100 elements. I want to
> determine which minor containers have at least one visible element.
> The elements at the bottom are being hidden and shown by various
> classes.

Thanks.

