Firefox提供SyntaxError:无效的regexp组 [英] Firefox gives SyntaxError: invalid regexp group

问题描述

我很少使用正则表达式来进行表单验证，并且我注意到我的项目无法通过firefox访问，因为它什么也没显示！但在控制台SyntaxError: invalid regexp group

I have few regular expression used for form validation and I noticed that my project is not accessible through firefox as it shows nothing! but give the error in the console, SyntaxError: invalid regexp group

nicRegex正在检查我所在国家的国民身份证.格式应为937962723V或937962723X或根据当前格式的任何11位数字.

nicRegex is checking for National Identity Card in my country. Format should be 937962723V or 937962723X or any 11 digit number according to the current format.

phoneRegex将使用我的国家/地区代码检查电话号码. 94121212121或0762323232

phoneRegex is to check phone numbers with my country code. 94121212121 or 0762323232

const nicRegex = /^(?:19|20)?\d{2}(?:[01235678]\d\d(?<!(?:000|500|36[7-9]|3[7-9]\d|86[7-9]|8[7-9]\d)))\d{4}(?:[vVxX])$/;

推荐答案

此处使用负向后搜索(Firefox当前不支持)来限制前三个数字.可以通过负前瞻同样很好地执行此限制，只是需要将其放置在3位数字模式之前

The negative lookbehind (not currently supported in Firefox) is used here to restrict the previous three digits. This restriction can be performed equally well with a negative lookahead, just it needs to be placed before the 3-digit pattern:

(?:[0-35-8]\d\d(?<!(?:000|500|36[7-9]|3[7-9]\d|86[7-9]|8[7-9]\d)))

应该像

(?!000|500|36[7-9]|3[7-9]\d|86[7-9]|8[7-9]\d)[0-35-8]\d\d

请注意，非捕获组在这里是多余的，我将其删除，然后[01235678] = [0-35-8].

Note the non-capturing groups are redundant here, I removed them, and [01235678] = [0-35-8].

最终的正则表达式看起来像

The final regex looks like

/^(?:19|20)?\d{2}(?!000|500|36[7-9]|3[7-9]\d|86[7-9]|8[7-9]\d)[0-35-8]\d\d\d{4}[vVxX]$/

请参见 regex演示和 Regulex图:

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