I still have a joker up my sleeve! The Joker occurs in various games and can replace any card. Usually a court jester is pictured, hiding his face behind a mask.
The joker emoji was introduced in 2010 and released as part of the Unicode 11.0 standard. This emoji can be found under the activities category. Because the joker emoji has been around for quite some time, it should display correctly in the majority of operating systems.

Here you'll find a range of emojis on how they will look using different operating systems. Each company will design an emoji according to their own style. Here we have listed the most popular platforms around to see how the emoji will look on their screens.

Short Codes:

:black_joker:

Hex Code:

🃏

Decimal Code:

🃏

Punycode:

xn--fz7h

URL Escape Code:

%F0%9F%83%8F

JavaScript & JSON:

\ud83c\udccf

CSS Code:

content: '\01F0CF';