我被正则表达式卡住了，只能验证 1-10 之前可能有两个破折号（连字符）的数字，例如：
--9
或者
--10
或者
--1
但不是
--11 or not --0
在我看来，我尝试了一切，例如：
/(-\-\[1-10])/
怎么了？
非常感谢这么多工作示例！
如果我还想在所有这些之前验证数字怎么办，例如：
8--10 but not 0--10 or not 11--11
我试过了，但没有用：
/--([1-9]|10:[1-9]|10)\b/
哦，这个终于奏效了：
/^(10|[1-9])--(10|[1-9])$/
试一试：
/\b(?:[1-9]|10)--(?:[1-9]|10)\b/
根据OP的编辑进行更改。
解释：
The regular expression:
(?-imsx:\b(?:[1-9]|10)--(?:[1-9]|10)\b)
matches as follows:
NODE EXPLANATION
----------------------------------------------------------------------
(?-imsx: group, but do not capture (case-sensitive)
(with ^ and $ matching normally) (with . not
matching \n) (matching whitespace and #
normally):
----------------------------------------------------------------------
\b the boundary between a word char (\w) and
something that is not a word char
----------------------------------------------------------------------
(?: group, but do not capture:
----------------------------------------------------------------------
[1-9] any character of: '1' to '9'
----------------------------------------------------------------------
| OR
----------------------------------------------------------------------
10 '10'
----------------------------------------------------------------------
) end of grouping
----------------------------------------------------------------------
-- '--'
----------------------------------------------------------------------
(?: group, but do not capture:
----------------------------------------------------------------------
[1-9] any character of: '1' to '9'
----------------------------------------------------------------------
| OR
----------------------------------------------------------------------
10 '10'
----------------------------------------------------------------------
) end of grouping
----------------------------------------------------------------------
\b the boundary between a word char (\w) and
something that is not a word char
----------------------------------------------------------------------
) end of grouping
----------------------------------------------------------------------
The correct regex is
/\b--([1-9]|10)\b/
You're incorrectly escaping the first [ of your character class as \[. The character class used is incorrect as well. It would be treated as a character class with members 1 to 1 and a 0 i.e. [10] which means it matches either 0 or 1.
Also, the hyphens - don't need to be escaped outside a character class []. To validate the numbers that come before the hyphens as well use
/\b([1-9]|10)--([1-9]|10)\b/
在字符类之外，您不需要转义连字符。此外，您的角色类[1-10]只会匹配1and 0，因为[1-10]等于[10]and 只会匹配1and 0。试试这个正则表达式：
/^--(10|[1-9])$/
我想这会适合
/\-\-([1-9]|10)\b/
如果您不想捕获您的号码，请添加?:：
/\-\-(?:[1-9]|10)\b/
当你写[1-10]时，它表示字符 1 到 1 + 0 字符。就好像你写了[0-1]。
实际上，在您的情况下，最好分别测试用例--1 到--9 和--10，例如：/^(--10)|(--[1-9])$/