jquery - how to check if element has any classes attached to it

Question

you would imagine this would be easy to implement, but oh well..

anyway, I have an element to which classes are added or removed based of interaction on the site.

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Answer 1

In jQuery:

if($("#mydiv").is('[class]')

As YoYo points it out in comment, this would failed if attribute class as an empty string set. So don't use it...