正则表达式很奇怪

Question

I want to create a regex expression that I can pass to ng-pattern so that the input can only be valid if the string has only uppercase/lowercase latin letters from a to z, n with tilde, and vowels with acute accents; as well as dot. I came up with what I thought was the solution, but angularjs keeps telling me in the developer tools that my string is not valid when string is:

• ñ, Ñ
• á, e, í, ó, ú—also in uppercase
• a dot followed by a dot followed by a space—not that I am really interested in having that, but I think it should be valid.

This is what I've got : "[A-Za-z\\.\\s\\U+00C1\\U+00C9\\U+00CD\\U+00D1\\U+00D3\\U+00DA\\U+00E1\\U+00E9\\U+00ED\\U+00F1\\U+00F3\\U+00FA]+"

What am I doing wrong?

PS I tried the | operator mentioned in the wiki for the [Jun|Jul|Aug] example, but it acts even weirder.

Answer 1

此正则表达式应满足您的需求：

[A-Za-z\.\s\u00C1\u00C9\u00CD\u00D1\u00D3\u00DA\u00E1\u00E9\u00ED\u00F1\u00F3\u00FA]+

Answer 2

You should use a case-insensitive regular expression (the i flag) and escape your special characters with \\xHH instead of \\u+00HH .

 var regex = /^[az.\\s\\xC1\\xC9\\xCD\\xD1\\xD3\\xDA\\xE1\\xE9\\xED\\xF1\\xF3\\xFA]+$/i var valid = 'ñ Ñ á e í ó ú'.split(' ') var invalid = '0 ; Ć'.split(' ') console.log('Valid:') valid.forEach(function (e) { console.log(regex.test(e)) //=> true }) console.log('Invalid:') invalid.forEach(function (e) { console.log(regex.test(e)) //=> false }) 

 .as-console-wrapper { min-height: 100vh; }