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正则表达式真的很骚，可惜你不会写！！！
source link: https://juejin.im/post/5b96a8e2e51d450e6a2de115
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本文旨在用最通俗的语言讲述最枯燥的基本知识 文章提纲： 元字符 重复限定符 分组 转义 条件或 区间 正则表达式在几乎所有语言中都可以使用，无论是前端的JavaScript、还是后端的Java、c#。他们都提供相应的
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