quick question on alternator

[L.D. 100]

ok lately my battery has been dying on me quite often, ill recharge it but it just dies again like in a days worth of driving. Im guessing it could be my alternator thats not recharging my battery, since i already tried replacing the battery and no luck, so basically i want to know how to test the alternator. i dont want to buy/install a new one and stil have the same problem. so far to test it i tried unplugging the battery while the car was running and seeing if it turned off...and it did, but im not sure if this is a good way to test.
thanks in advance

[Muzzy]

ok...jus like i said in this other thread like 20 seconds ago...start the car...disconnect the neg battery terminal...if it still runs its no the alt..if it cuts off..its the alt

yea the alt button j/k