Character Encoding
UTF-8
0xF00x9F0xBF0xBF
UTF-16
0xD83F0xDFFF
UTF-32
0x0001FFFF
Copy & Paste Codes
Unicode Escape
\u{1FFFF}
HTML Entity (Decimal)

HTML Entity (Hex)

CSS Code
\1FFFF
JavaScript/JSON
String.fromCodePoint(0x1FFFF)
Python
chr(0x1FFFF)
Ruby/PHP
chr(0x1FFFF)
Unix, C, PHP, JAVA
0x1FFFF
Perl
chr(0x1FFFF)
URL Encoded
%1ffff