regular expressions 正则表达式记录

各类网站

regular-expressions.info
https://www.regular-expressions.info/index.html

mozilla.org正则表达式
https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Guide/Regular_expressions

PCRE2 - Perl-Compatible Regular Expressions
https://github.com/PCRE2Project/pcre2
https://www.pcre.org/

regex101 正则表达式在线练习网站
https://regex101.com/

regexr 也是正则表达式在线练习网站
https://regexr.com/

oschina.net表达式全集
https://tool.oschina.net/uploads/apidocs/jquery/regexp.html

正则表达式详解(正则基础入门教程)
https://www.jb51.net/program/306582p1f.htm

正则表达式30分钟入门教程
https://www.jb51.net/tools/zhengze.html

基本正则表达式(BRE)与扩展正则表达式(ERE) 教程
https://blog.csdn.net/Buster_ZR/article/details/105466838