I agree with the two earlier posts. Play them like aces...5X BB raise. If an A, K, or Q comes on the flop...you may have to lay them down. Although sometimes one more bet will get a smaller pair to lay down.
Well with JJ if I'm in a ring game I limp in with them most time that way there easy to fold! If I'm in a trny if it's before first break either limp in or dont play them after first break depends on players I'm against and table image!! I just tightend my play up so my guidelines are sky high right now lol
Probably the best time to use JJ would be late in trny and play them solid but know when to fold/if small chip stack all in may'be win or take blinds