正则表达式在Chrome模式输入验证中 [英] Regex on Chrome pattern input validation

问题描述

我有一个符合RFC 5322的电子邮件正则表达式模式，以验证我的输入. 这在所有浏览器中都适用，但是Chrome在控制台上向我显示了以下错误:

I have an RFC 5322 compliant email regex pattern to validate my input. This works in all browsers, but Chrome show me the following error on console:

Pattern attribute value ^[-a-z0-9~!$%^&*_=+}
{\'?]+(\.[-a-z0-9~!$%^&*_=+}{\'?]+)*@([a-z0-9_]
[-a-z0-9_]*(\.[-a-z0-9_]+)*\.(aero|arpa|biz
|com|coop|edu|gov|info|int|mil|museum|name
|net|org|pro|travel|mobi|[a-z][a-z])|([0-9]
{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}))
(:[0-9]{1,5})?$
is not a valid regular expression:

Uncaught SyntaxError: Invalid regular expression:
/^[-a-z0-9~!$%^&*_=+}{\'?]+(\.[-a-z0-9~!$%^
&*_=+}{\'?]+)*@([a-z0-9_][-a-z0-9_]*(\.[-a-z
0-9_]+)*\.(aero|arpa|biz|com|coop|edu|gov
|info|int|mil|museum|name|net|org|pro|travel
|mobi|[a-z][a-z])|([0-9]{1,3}\.[0-9]{1,3}\.
[0-9]{1,3}\.[0-9]{1,3}))(:[0-9]{1,5})?$/

Invalid escape

我只是找不到哪个块具有此无效的转义.

I just can't find what chunk have this invalid escape.

推荐答案

由于Chrome的pattern属性会自动添加u修饰符，因此将应用更严格的regex语法规则.基本上，您不能转义任意符号.如果该符号不是特殊的正则表达式元字符，则无法将其转义，否则会出现此错误.

Since Chrome pattern attribute automatically adds u modifier, stricter rules for regex syntax are applied. Basically, you cannot escape arbitrary symbols. If the symbol is not a special regex metacharacter, you cannot escape it, or you will get this error.

因此，在您的情况下，单个撇号一定不能转义.删除转义的反斜杠之前，该正则表达式将在每个浏览器中再次运行.

So, in your case, the single apostrophe must not be escaped. Remove the escaping backslash before it, and the regex will work in every browser again.

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