javascript 这个正则表达式是什么意思 - “\p{Lu}”？
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What does this regexp mean - "\p{Lu}"?
提问by Mika?l Mayer
I stumble across this regular expression in c# I would like to port to javascript, and I do not understand the following:
我在 c# 中偶然发现了这个正则表达式，我想移植到 javascript，但我不明白以下内容：
[-.\p{Lu}\p{Ll}0-9]+
The part I have a hard time with is of course \p{Lu}. All regexp websites I visited never mention this modifier.
我有困难的部分当然是\p{Lu}。我访问过的所有正则表达式网站都没有提到这个修饰符。
Any idea?
任何的想法？
回答by hwnd
These are considered Unicodeproperties.
这些被认为是Unicode属性。
The Unicode property \p{L}— shorthand for \p{Letter}will match any kind of letter from any language. Therefore, \p{Lu}will match an uppercase letter that has a lowercase variant. And, the opposite \p{Ll}will match a lowercase letter that has an uppercase variant.
Unicode 属性\p{L}— for 的简写\p{Letter}将匹配来自任何语言的任何类型的字母。因此，\p{Lu}将匹配具有小写变体的大写字母。并且，相反的\p{Ll}将匹配具有大写变体的小写字母。
Concisely, this would match any lowercase/uppercase that has a variantfrom any language:
AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz
