Character Encoding
UTF-8
0xF00xBF0xBF0xBF
UTF-16
0xD8BF0xDFFF
UTF-32
0x0003FFFF
Copy & Paste Codes
Unicode Escape
\u{3FFFF}
HTML Entity (Decimal)

HTML Entity (Hex)

CSS Code
\3FFFF
JavaScript/JSON
String.fromCodePoint(0x3FFFF)
Python
chr(0x3FFFF)
Ruby/PHP
chr(0x3FFFF)
Unix, C, PHP, JAVA
0x3FFFF
Perl
chr(0x3FFFF)
URL Encoded
%3ffff