Javascript 正则表达式只接受字母、空格和 ?
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Javascript regex to accept only letters, spaces, and ?
提问by Jonathan Edgardo
I am looking for a Javascript regex to make sure the string contains only spaces, letters, and ? — case insensitively.
我正在寻找一个 Javascript 正则表达式来确保字符串只包含空格、字母和 ? - 不区分大小写。
I already tried: /^[A-Za-z _]*[A-Za-z][A-Za-z _]*$/but it fails to accept ?.
我已经尝试过：/^[A-Za-z _]*[A-Za-z][A-Za-z _]*$/但它无法接受?.
回答by Benjamin Udink ten Cate
/^[?A-Za-z _]*[?A-Za-z][?A-Za-z _]*$/
and
和
/^[\u00F1A-Za-z _]*[\u00F1A-Za-z][\u00F1A-Za-z _]*$/
should work.
应该管用。
Javascript regex supports \u0000through \uFFFF.
Javascript 正则表达式支持\u0000通过\uFFFF.
回答by xanatos
If you simply want that caracter, insert it in the Regex, like [A-Za-z?? ]. Otherwise use a Unicode-knowing Regex library for Javascript like http://xregexp.com/. Sadly JS Regexes don't support Unicode compliant character classes (like \p{L}in C# regexes)
如果您只是想要该字符，请将其插入正则表达式中，例如[A-Za-z?? ]. 否则，请为 Javascript 使用支持 Unicode 的 Regex 库，例如http://xregexp.com/。遗憾的是 JS 正则表达式不支持 Unicode 兼容的字符类（如\p{L}在 C# 正则表达式中）
回答by Chinmay Kanchi
You need to use a character class.
您需要使用字符类。
/[A-Za-z ?]+/
