Cryingvoid

(Guys, if my question was offtopic or smth, please redirect me to where it should be asked).

Hi guys, sorry in advance if the question is stupid. In couple of matches I've seen on you-tube Tao was doing j4D turning it into a throw when reaching the opponent. But I have no idea how to pull it out, it seemed to be changed into a throw in an instant. What's the trick? (umm... I've seen it in CT, but I guess the trick is the same in CS)