正则表达式 语法 | 菜鸟教程

## 正则表达式 – 语法 | 菜鸟教程

正则表达式 - 语法 正则表达式(regular expression)描述了一种字符串匹配的模式（pattern），可以用来检查一个串是否含有某种子串、将匹配的子串替换或者从某个串中取出符合某个条件的子串等。 例如： runoo+b ，可以匹配 runoob、runooob、runoooooob 等，+…



December 26, 2017 at 01:23PM

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