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Next Section： atoms in regular expressions
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Quick introduction to regular expressions
Chapter1 Preparation
1-1 Regularity is the art of query
1-2 Regular verification tool
1-3 Regular debugging function
1-4 Regular verification function
Chapter2 Get started quickly
2-1 Regular delimiter
2-2 atoms in regular expressions
2-3 Metacharacters in regular expressions
2-4 Pattern modifiers in regular expressions
Chapter3 Classic example
3-1 Match non-null characters
3-2 Match mobile number
3-3 Match email address
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notes
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![Front-end project-Shangyou [HTML/CSS/JS technology comprehensive practice]](https://img.php.cn/upload/course/000/000/068/63bfcb2974f91471.jpg)
![Zero-based front-end course [Vue advanced learning and practical application]](https://img.php.cn/upload/course/000/000/068/63bbd15353895588.jpg)
![WEB front-end tutorial [HTML5+CSS3+JS]](https://img.php.cn/upload/course/000/000/068/63ba60c8da520536.jpg)
![Apipost practical application [api, interface, automated testing, mock]](https://img.php.cn/upload/course/000/000/068/63b3c967a20f4861.jpg)
