javascript

JavaScript

String internals

JavaScript store strings using 16-bit code units. That's UCS-2. It is not UTF-16. See the reference.

UCS-2 sucks. See also this question on SO.

>>> '𝟘'.length // 𝟘 is U+1D7D8
2

octal literal deprecated

Some references:

• https://mail.mozilla.org/pipermail/es-discuss/2012-January/019434.html
• https://developer.mozilla.org/en/Core_JavaScript_1.5_Guide/Core_Language_Features#Integers