正则表达式无法正常工作 [英] Regex is not working

问题描述

我需要在下面的场景中为编写一个正则表达式：
前四个字符必须是包含 Ñ或 &安培;。 
接下来的两个字符必须是数字。 
下一个字符必须是 0 或 1 。 
下一个字符必须是数字。 
接下来的两个字符必须是从  01 到 31 。 
 
我有正则表达式，但此  失败：
  var  regexTenCharacter =  new  RegExp（ < span class =code-string> [A-Za-zÑ&] {4} [0-9] {2} [0 | 1] {1} [0-9] {1} [0-3] { 1} [0-9] {1} $）; 
 
请为 此提供的解决方法。

我的尝试：



var regexTenCharacter = new RegExp（ [A-ZA-ZN&安培;] {4} [0-9] {2} [0 | 1] {1} [0-9] {1} ^（3 [01] | [12] [0-9 ] | [1-9]）$）;

解决方案

）;

请提供解决方法 for this 。

我尝试过：



var regexTenCharacter = new RegExp（[A-Za-zÑ&] {4} [0 -9] {2} [0 | 1] {1} [0-9] {1} ^（3 [01] | [12] [0-9] | [1-9]）

）;

你的正则表达式看起来非常接近。试试：

  var  regexTenCharacter =  new   RegExp （  ^ [A. -Za-ZN&安培;] {4} \d {2} [01] \d：3 [01] |（:( ?: 0 [1-9]）|（[12] \d？） ）

I need to write a regex for below scenario:
First four characters must be letters including "Ñ" or "&".
Next two characters must be digits.
Next character must be 0 or 1.
Next character must be digit.
Next two characters must be from 01 to 31.

I have a regex, but this is failing:
var regexTenCharacter = new RegExp("[A-Za-zÑ&]{4}[0-9]{2}[0|1]{1}[0-9]{1}[0-3]{1}[0-9]{1}$");

Please provide a workaround for this.

What I have tried:

var regexTenCharacter = new RegExp("[A-Za-zÑ&]{4}[0-9]{2}[0|1]{1}[0-9]{1}^(3[01]|[12][0-9]|[1-9])$");

解决方案

"); Please provide a workaround for this.

What I have tried:

var regexTenCharacter = new RegExp("[A-Za-zÑ&]{4}[0-9]{2}[0|1]{1}[0-9]{1}^(3[01]|[12][0-9]|[1-9])

");

Your regex looks awfully close. Try:

var regexTenCharacter = new RegExp("^[A-Za-zÑ&]{4}\d{2}[01]\d(?:(?:0[1-9])|(?:[12]\d)|3[01])

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