解析JavaScript正则表达式的相关内容

文章 2023-01-11 来自：开发者社区

简单解析JavaScript中的正则表达式(三)

简单解析JavaScript中的正则表达式(三)本片博客主要来和大家讲一下正则表达式实际的应用。1.正则表达式的范围 []中括号用于查找某个范围内的字符：// [abc] 查找方括号之间的任何字符。// [^abc] 查找任何不在方括号之间的字符。除去// [0-9] 查找任何从 0 至 9 的数字。// [a-z] 查找任何从小写 a 到小写 z 的字符。// [A-...

文章 2023-01-11 来自：开发者社区

简单解析JavaScript中的正则表达式(二)

简单解析JavaScript中的正则表达式(二)上篇文章讲解了JavaScript中正则表达式的创建以及怎样在字符串方法中使用。这篇文章主要讲解正则表达式的属性和方法。1.正则表达式的方法// test() 测试检索字符串中的值是否符合匹配的条件 true falsevarstr="hello world"; varreg=/hellO/; console.log(reg.test(s...

文章 2023-01-11 来自：开发者社区

简单解析JavaScript中的正则表达式对象今天这篇篇博客来和大家讲一下JavaScript中的RegExp对象。正则表达式：RegExp(Regular Expression)对象，简称正则式。时用来描述字符模式的对象，可以对字符串进行检索，匹配，替换等操作。1.创建正则表达式// 字面量// 语法：var reg1=/表达式/修饰符varreg=/a/igm; // 构造函数// 语法：v....

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