also: やるやん
expression, interjection
way to go!; well done!; nice job!
Casual, friendly praise for something someone did well. Often used among friends or in informal situations.
テストで満点取ったんだって？やるじゃん！
I heard you got a perfect score on the test? Way to go!
初めて作ったケーキ、美味しいよ。やるじゃん！
This cake you made for the first time is delicious. Nice job!