[jQuery] Beginner Question

[Flavouski]

In JQuery I saw you can get attributes by saying

foo.attr("value"), super handy.

Is there anyway to get the element of the thing that contains the
attribute?
Reasoning: I've got a few hidden inputs that have

name="firstName" value="Bob"
name="lastName" value="Bobble"

So I would want to say get the element whose attr "name" equals
"firstName".  So then I can go back into the element and retrieve the
value associated with it: "Bob"

Thanks