标识符 ecmascript 2017 规范
Identifier ecmascript 2017 specification
的问候
UnicodeIDStart::
any Unicode code point with the Unicode property "ID_Start"
UnicodeIDContinue::
any Unicode code point with the Unicode property "ID_Continue"
什么是 Unicode 属性 "ID_Start" 和 "ID_Continue"？
指Unicode character properties. As the ES spec说
IdentifierName and ReservedWord are tokens that are interpreted according to the Default Identifier Syntax given in Unicode Standard Annex #31, Identifier and Pattern Syntax […]. The Unicode identifier grammar is based on character properties specified by the Unicode Standard.
That standard is also referenced in the bibliography 规格
UnicodeIDStart::
any Unicode code point with the Unicode property "ID_Start"
UnicodeIDContinue::
any Unicode code point with the Unicode property "ID_Continue"
什么是 Unicode 属性 "ID_Start" 和 "ID_Continue"？
指Unicode character properties. As the ES spec说
IdentifierName and ReservedWord are tokens that are interpreted according to the Default Identifier Syntax given in Unicode Standard Annex #31, Identifier and Pattern Syntax […]. The Unicode identifier grammar is based on character properties specified by the Unicode Standard.
That standard is also referenced in the bibliography 规格