引用标准

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
下列参考文件对本文件的应用是不可缺少的。如引用日期已定，则只适用所引用的版本。对于未注明日期的引用，适用引用文件(包括任何修订)的最新版本。

ISO/IEC 10646 Information Technology – Universal Multiple-Octet Coded Character Set (UCS) plus Amendment 1:2005, Amendment 2:2006, Amendment 3:2008, and Amendment 4:2008, plus additional amendments and corrigenda, or successor。
ISO/ iec10646信息技术-通用多八位编码字符集(UCS)加上修订1:2005，修订2:2006，修订3:2008和修订4:2008，加上额外的修订和更正，或后续版本。

ECMA-402, ECMAScript 2015 Internationalization API Specification.
https://ecma-international.org/publications/standards/Ecma-402.htm

ECMA-404, The JSON Data Interchange Format.
https://ecma-international.org/publications/standards/Ecma-404.htm