JavaScript学习正则表达式的相关内容

文章 2024-07-03 来自：开发者社区

17 JavaScript 学习：正则表达式

JavaScript 正则表达式 JavaScript中正则表达式是一种强大的工具，用于在字符串中进行模式匹配和搜索。下面是一些JavaScript中使用正则表达式的基本知识：创建正则表达式：可以使用字面量形式或者RegExp构造函数来创建正则表达式。字面量形式：var regex = /pattern/; 构造函数形式：v...

文章 2018-11-16 来自：开发者社区

JavaScript学习（十二）---正则表达式

目录正则表达式基础正则表达式的基本结构正则表达式的作用 1.测试字符串的某个模式 2.替换文本 3.根据模式匹配从字符串中提取一个子字符串正则表达式语法模式匹配符定义符与原义字符（1）文本验证定位符例子：匹配字符“^”的使用匹配字符"$"的使用用“\b”匹配一个自边界限定符与选择匹配符（1）限定符（2）贪婪匹配与非贪婪匹配（3)选择匹...

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更新时间 2024-07-11 14:14:24

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