Regular Expressions matching Chinese Characters

Regular Expressions matching Chinese Characters

\ W matches only Chinese characters, numbers, and letters. It is often used only to match Chinese characters. For details, see
Copy codeThe Code is as follows:
Regular Expression matching Chinese characters: [\ u4e00-\ u9fa5]

You may also need to match double-byte characters. Chinese characters are also double-byte characters.
Copy codeThe Code is as follows:
Match double-byte characters (including Chinese characters): [^ \ x00-\ xff]

Note: It can be used to calculate the length of a string (a dual-byte length is 2, and an ASCII character is 1)