Combining a class selector and an attribute selector with jQuery

Question

Is it possible to combine both a class selector and an attribute selector with jQuery?

For example, given the following HTML:

Answer 1

I think you just need to remove the space. i.e.

$(".myclass[reference=12345]").css('border', '#000 solid 1px');

There is a fiddle here http://jsfiddle.net/xXEHY/