Selecting Elements with more than one Class in jQuery

Question

I have some message elements like this...

<span class="error message">Whoops!  Don't forget your name.</span>

And...

<span class="success message">All done!  Thank you very much.</span>

You'll notice that two classes are being applied to a single span element. This is valid markup. How can I select elements with two classes like this?

Note: I don't want all elements that have a class attribute containing "message". I need the elements that have both "error" and "message" (and nothing else).

Answer 1

$('.error.message')

should do it.