What is the Chinese regular expression like
I would like to share with you what the Chinese regular expression is like. I believe most people don't know much about it, so share this article for your reference. I hope you will learn a lot after reading this article. Let's learn about it!
How about Chinese regular expressions
\ w matches only Chinese, numbers and letters. For Chinese people, only matching Chinese is often used, see below
Regular expressions that match Chinese characters: [\ u4e00 -\ u9fa5]
Maybe you also need to match double-byte characters. Chinese is also double-byte characters.
Match double-byte characters (including Chinese characters): [^\ X00 -\ xff]
Note: it can be used to calculate the length of a string (a double-byte character length meter 2recom ASCII character counter 1)
More common regular expression matching rules:
English letter: [a-zA-Z]
Number: [0-9]
Match Chinese, English letters and numbers and _:
/ / codefrom http://caibaojian.com/zhongwen-regexp.html
^ [\ u4e00 -\ u9fa5_a-zA-Z0-9] + $
Regular expressions of letters, numbers, underscores and Chinese characters
1. Regular expressions that have only letters, numbers, and underscores and cannot begin and end with an underscore: ^ (?! _) (?!. *? _ $) [a-zA-Z0-9] + $
Only letters and numbers: ^ [a-zA-Z0-9 _] + $
two。 At least one Chinese character, number, letter, underscore: "[a-zA-Z0-9 _\ u4e00 -\ u9fa5] +"
3. The regular expression of at least one Chinese character: "^ [\ u4e00 -\ u9fa5]"
4. Up to 10 Chinese characters: ValidationExpression= "^ [\ u4e00 -\ u9fa5] {0jue 10}"
5. It contains only Chinese characters, numbers, letters and underscores and cannot begin and end with an underscore: ^ (?! _) (?!. *? _ $) [a-zA-Z0-9 _\ u4e00 -\ u9fa5] + $
Explanation:
^ matches the beginning of the string
(? _) cannot start with _
(?. *? _ $) cannot end with _
[a-zA-Z0-9 _\ u4e00 -\ u9fa5] + at least one Chinese character, number, letter, underscore
$matches the end of the string
6. A regular expression that contains only Chinese characters, numbers, letters, underscores, not the beginning and end of an underscore:
^ (! _) (?!. *? _ $) [a-zA-Z0-9 _\ u4e00 -\ u9fa5] + $
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