创建自定义正则表达式

Question

如何创建可以检查以下内容的正则表达式：

• 可以有yAxis: { ... zIndex: 4 } 或http
• 可能有https或不是
• 必须有www，steamcommunity

• 必须有.com或id，后跟数字或文字

  http://steamcommunity.com/id/rasmusvejby/ http://steamcommunity.com/profiles/76561198040893433

还应该说，如果它包含ID，它应该检查是否有文本，如果它同意配置文件，我应该检查数字。

Answer 1

能解密

鉴于您的示例文本......

http://steamcommunity.com/id/rasmusvejby/
http://steamcommunity.com/profiles/76561198040893433

......这个正则表达式......

^https?://(?:www\.)?steamcommunity\.com/(id/([^/\s]*)|profiles/([^/\s]*))

...将执行以下操作

1. 验证网址包含steamcommunity.com
2. 与前导www
匹配或不匹配
3. 允许http或https
4. 捕获网址的ID或个人资料部分
5. 捕获id或个人资料的字符串

捕获群组

• 组0获取完整字符串
• 第1组获取（ID或配置文件）和关联值
• 第2组只获取ID
的值
• 第3组只获取配置文件的值

实施例

示例匹配

[0][0] = http://steamcommunity.com/id/rasmusvejby
[0][1] = id/rasmusvejby
[0][2] = rasmusvejby
[0][3] = 

[1][0] = http://steamcommunity.com/profiles/76561198040893433
[1][1] = profiles/76561198040893433
[1][2] = 
[1][3] = 76561198040893433

解释



NODE                     EXPLANATION
----------------------------------------------------------------------
  ^                        the beginning of a "line"
----------------------------------------------------------------------
  http                    'http'
----------------------------------------------------------------------
  s?                       with or without 's'
----------------------------------------------------------------------
  ://                      '://'
----------------------------------------------------------------------
  (?:                      group, but do not capture (optional
                           (matching the most amount possible)):
----------------------------------------------------------------------
    www                      'www'
----------------------------------------------------------------------
    \.                       '.'
----------------------------------------------------------------------
  )?                       end of grouping
----------------------------------------------------------------------
  steamcommunity           'steamcommunity'
----------------------------------------------------------------------
  \.                       '.'
----------------------------------------------------------------------
  com/                     'com/'
----------------------------------------------------------------------
  (                        group and capture to \1:
----------------------------------------------------------------------
    id/                      'id/'
----------------------------------------------------------------------
    (                        group and capture to \2:
----------------------------------------------------------------------
      [^/\s]*                  any character except: '/', whitespace
                               (\n, \r, \t, \f, and " ") (0 or more
                               times (matching the most amount
                               possible))
----------------------------------------------------------------------
    )                        end of \2
----------------------------------------------------------------------
   |                        OR
----------------------------------------------------------------------
    profiles/                'profiles/'
----------------------------------------------------------------------
    (                        group and capture to \3:
----------------------------------------------------------------------
      [^/\s]*                  any character except: '/', whitespace
                               (\n, \r, \t, \f, and " ") (0 or more
                               times (matching the most amount
                               possible))
----------------------------------------------------------------------
    )                        end of \3
----------------------------------------------------------------------
  )                        end of \1