Is the Joker intelligent?

Do you consider the Joker to be intelligent, meaning that he always plans ahead before he gets caught or something like that?

like jack sparrow
is he running xanatos gambits or indy ploys

...Are you high? He certainly isnt stupid....

Criminal mastermind.

With skills in Chemistry. Yep! He's pretty smart.

the joker is one smart dude

Lol, is this a serious question? Of course he's intelligent...you can't pull off the shit he's done over his longevity without being intelligent.