Punycode
目录
自 v7.0.0 版本开始弃用
自 v0.10.0 版本开始新增
源代码： lib/punycode.js
The version of the punycode module bundled in Node.js is being deprecated.
In a future major version of Node.js this module will be removed. Users
currently depending on the punycode module should switch to using the
userland-provided Punycode.js module instead. For punycode-based URL
encoding, see url.domainToASCII or, more generally, the
WHATWG URL API.
The punycode module is a bundled version of the Punycode.js module. It
can be accessed using:
JS
Punycode is a character encoding scheme defined by RFC 3492 that is
primarily intended for use in Internationalized Domain Names. Because host
names in URLs are limited to ASCII characters only, Domain Names that contain
non-ASCII characters must be converted into ASCII using the Punycode scheme.
For instance, the Japanese character that translates into the English word,
'example' is '例'. The Internationalized Domain Name, '例.com' (equivalent
to 'example.com') is represented by Punycode as the ASCII string
'xn--fsq.com'.
The punycode module provides a simple implementation of the Punycode standard.
The punycode module is a third-party dependency used by Node.js and
made available to developers as a convenience. Fixes or other modifications to
the module must be directed to the Punycode.js project.
M punycode.decode(string)
自 v0.5.1 版本开始新增
stringstring
The punycode.decode() method converts a Punycode string of ASCII-only
characters to the equivalent string of Unicode codepoints.
JS
M punycode.encode(string)
自 v0.5.1 版本开始新增
stringstring
The punycode.encode() method converts a string of Unicode codepoints to a
Punycode string of ASCII-only characters.
JS
M punycode.toASCII(domain)
自 v0.6.1 版本开始新增
domainstring
The punycode.toASCII() method converts a Unicode string representing an
Internationalized Domain Name to Punycode. Only the non-ASCII parts of the
domain name will be converted. Calling punycode.toASCII() on a string that
already only contains ASCII characters will have no effect.
JS
M punycode.toUnicode(domain)
自 v0.6.1 版本开始新增
domainstring
The punycode.toUnicode() method converts a string representing a domain name
containing Punycode encoded characters into Unicode. Only the Punycode
encoded parts of the domain name are be converted.
JS
M punycode.ucs2
自 v0.7.0 版本开始新增
M punycode.ucs2.decode(string)
自 v0.7.0 版本开始新增
stringstring
The punycode.ucs2.decode() method returns an array containing the numeric
codepoint values of each Unicode symbol in the string.
JS
M punycode.ucs2.encode(codePoints)
自 v0.7.0 版本开始新增
codePointsinteger[]
The punycode.ucs2.encode() method returns a string based on an array of
numeric code point values.
JS
M punycode.version
自 v0.6.1 版本开始新增
Returns a string identifying the current Punycode.js version number.