普通防爆pression验证数字与一个空格和一个可选的特殊字符 [英] Regular Expression for validating numbers with one space and one optional special character

问题描述

有人可以告诉我如何验证数字序列与一个空格，并在年底会有一个可选的特殊字符说'＃'，再其次是一些5位。

Can someone tell me how to validate sequence of numbers with one space and at the end there will be a optional special character say '#' and again followed by some 5 digits.

例如：

12345 6587＃2584

12345 6587#2584

我曾尝试与

(0(?:\d{0,11}|(?=\d* \d*$)[\d ]{0,12}))

但我不知道如何添加到底后面跟着数字可选的'＃'。

but I don't know how to add optional '#' in the end followed by digits.

推荐答案

这应该做的伎俩

/^\d+\s\d+(?:#\d+)?$/

看到它在 rubular

^      beginning of string
\d+    one or more numbers
\s     any whitespace character
\d+    one or more numbers
(?:    begin non-capturing group
  #    literal '#' character
  \d+  one or more numbers
)      end non-capturing group
$      end of string

---

修改

/^0[\d\s]{,11}(?:#\d{,5}?$/

比赛开始 0 字符串，然后是一个最大的11个数字或空格。其次是一个可选的＃用最大的5个号码后。

Matches a string starting with 0, followed by a max of 11 numbers or spaces. Followed by an optional # with a max of 5 numbers after it.

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