正则表达无需重复

Question

有些人可以回答我对regexp做错了什么。我需要编写regexp，它只能通过这三种格式传递来自phonenumber的值： “+38（093）937-99-92”和“093 937 99 92”和“（093）937 99 92”

在我开始写这件事的过程中我发现了一个错误example of error and how i do

我知道逃避符号但在我的例子中我逃脱的所有符号，其他都是正则表达式的一部分，因为我知道......

$.validator.addMethod("phone", function(value, element) {

        return /^\+[0-9]{2}\([0-9]{3}\)[0-9]{3}+$/i.test(value);
    }

Answer 1

描述

^(?:\+[0-9]{2}\s)?(?:\([0-9]{3}\)|[0-9]{3})\s[0-9]{3}(-|\s)[0-9]{2}\1[0-9]{2}

此正则表达式将匹配以下格式的字符串

• +38（093）937-99-92
• 093 937 99 92
• （093）937 99 92

实施例

现场演示

https://regex101.com/r/lM8hS0/1

解释

NODE                     EXPLANATION
----------------------------------------------------------------------
  ^                        the beginning of a "line"
----------------------------------------------------------------------
  (?:                      group, but do not capture (optional
                           (matching the most amount possible)):
----------------------------------------------------------------------
    \+                       '+'
----------------------------------------------------------------------
    [0-9]{2}                 any character of: '0' to '9' (2 times)
----------------------------------------------------------------------
    \s                       whitespace (\n, \r, \t, \f, and " ")
----------------------------------------------------------------------
  )?                       end of grouping
----------------------------------------------------------------------
  (?:                      group, but do not capture:
----------------------------------------------------------------------
    \(                       '('
----------------------------------------------------------------------
    [0-9]{3}                 any character of: '0' to '9' (3 times)
----------------------------------------------------------------------
    \)                       ')'
----------------------------------------------------------------------
   |                        OR
----------------------------------------------------------------------
    [0-9]{3}                 any character of: '0' to '9' (3 times)
----------------------------------------------------------------------
  )                        end of grouping
----------------------------------------------------------------------
  \s                       whitespace (\n, \r, \t, \f, and " ")
----------------------------------------------------------------------
  [0-9]{3}                 any character of: '0' to '9' (3 times)
----------------------------------------------------------------------
  (                        group and capture to \1:
----------------------------------------------------------------------
    -                        '-'
----------------------------------------------------------------------
   |                        OR
----------------------------------------------------------------------
    \s                       whitespace (\n, \r, \t, \f, and " ")
----------------------------------------------------------------------
  )                        end of \1
----------------------------------------------------------------------
  [0-9]{2}                 any character of: '0' to '9' (2 times)
----------------------------------------------------------------------
  \1                       what was matched by capture \1
----------------------------------------------------------------------
  [0-9]{2}                 any character of: '0' to '9' (2 times)
----------------------------------------------------------------------

Answer 2

这是问题的尾随+。你需要重复一些事情，例如：(?:[0-9]{3})+。但是这个正则表达式应该符合你的需求：

/^(?:\+\d{2} \(\d{3}\) \d{3}-\d{2}-\d{2}|(?:\(\d{3}\)|\d{3}) \d{3} \d{2} \d{2})$/

Try it online

我删除了链接页面中的^和$（字符串的开头和结尾），还添加了g lobal标志，以便您可以看到它是如何工作的。