在正则表达式字符括号中包含连字符？ [英] Including a hyphen in a regex character bracket?

问题描述

$.validator.addMethod('AZ09_', function (value) { 
    return /^[a-zA-Z0-9.-_]+$/.test(value); 
}, 'Only letters, numbers, and _-. are allowed');

当我使用某些类似 test-123 它仍然会触发连字符无效。我试过 \ - 和 -

When I use somehting like test-123 it still triggers as if the hyphen is invalid. I tried \- and --

推荐答案

使用 \ - 转义应该没问题，但您也可以尝试将其放在字符类的开头或结尾。这应该适合你：

Escaping using \- should be fine, but you can also try putting it at the beginning or the end of the character class. This should work for you:

/^[a-zA-Z0-9._-]+$/

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