JavaScript 中正则如何匹配字母类别单个utf-8字符？

Question

像 PHP 这类语言里我可以用\p{L}来匹配，但在JS里好像并没有被支持，是否有比较简单的实现方法呢？

Answer 1

Unicode Property Escapes

// finding all the letters of a text
let story = "It's the Cheshire Cat: now I shall have somebody to talk to.";

// Most explicit form
story.match(/\p{General_Category=Letter}/gu);

// It is not mandatory to use the property name for General categories
story.match(/\p{Letter}/gu);

// This is equivalent (short alias):
story.match(/\p{L}/gu);

// This is also equivalent (conjunction of all the subcategories using short aliases)
story.match(/\p{Lu}|\p{Ll}|\p{Lt}|\p{Lm}|\p{Lo}/gu);

注意需要 unicode 模式 u 。