javascript - 包含小写、大写、字母数字、特殊字符的正则表达式，且一行中相同字符不超过 2 个，最小长度为 8 个字符

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Regex for password must contain at least eight characters, at least one number and both lower and uppercase letters and special characters (43 个回答)

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我正在尝试创建一个正则表达式，它允许 4 种主要字符类型(小写、大写、字母数字和特殊字符)，最小长度为 8，并且一行中相同字符不超过 2 个。

我尝试寻找潜在的解决方案并将不同的正则表达式拼凑在一起，但没有那么幸运!我在 Owasp.org 上找到了这个

^(?:(?=.*\d)(?=.*[A-Z])(?=.*[a-z])|(?=.*\d)(?=.*[^A-Za-z0-9])(?=.*[a-z])|(?=.*[^A-Za-z0-9])(?=.*[A-Z])(?=.*[a-z])|(?=.*\d)(?=.*[A-Z])(?=.*[^A-Za-z0-9]))(?!.*(.)\1{2,})[A-Za-z0-9!~<>,;:_=?*+#."&§%°()\|\[\]\-\$\^\@\/]{8,32}$

但是当我需要全部 4 个字符时，它至少使用 4 个不同字符中的 3 个。我尝试将其修改为需要全部 4 个字符，但没有任何进展。如果有人可以帮助我，我将不胜感激!

Answer 1

你能尝试以下方法吗？

var strongRegex = new RegExp("^(?=.*[a-z])(?=.*[A-Z])(?=.*[0-9])(?=.*[!@#\$%\^&\*])(?=.{8,})");

Explanations
RegEx            Description
(?=.*[a-z])      The string must contain at least 1 lowercase alphabetical character
(?=.*[A-Z])      The string must contain at least 1 uppercase alphabetical character
(?=.*[0-9])      The string must contain at least 1 numeric character
(?=.[!@#\$%\^&])    The string must contain at least one special character, but we are escaping reserved RegEx characters to avoid conflict
(?=.{8,})        The string must be eight characters or longer

或者尝试使用

(?=.{8,100}$)(([a-z0-9])(?!\2))+$ The regex checks for lookahead and rejects if 2 chars are together

var strongerRegex = new RegExp("^(?=.*[a-z])(?=.*[A-Z])(?=.*[0-9])(?=.*[!@#\$%\^&\*])(?=.{8,100}$)(([a-z0-9])(?!\2))+$");

reference