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Regex 匹配正则表达式进行规范化

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Regex 匹配正则表达式进行规范化,regex,Regex,正则表达式非常糟糕，请在此寻求帮助 我正在编写的函数是接受输入，并返回规范化的输出 所以输入必须匹配特定的，而不是列出所有可能的组合，有什么方法可以使用RegExp吗 e、 g.jackjill | jack jill | jack&jill | jack&jill | jack-&jill | jack and jill | jack and jill | jack and jill | jack n jill |……，函数将返回“jack&jill” 因此，input.match（/jack

正则表达式非常糟糕，请在此寻求帮助 我正在编写的函数是接受输入，并返回规范化的输出 所以输入必须匹配特定的，而不是列出所有可能的组合，有什么方法可以使用RegExp吗

e、 g.jackjill | jack jill | jack&jill | jack&jill | jack-&jill | jack and jill | jack and jill | jack and jill | jack n jill |……，函数将返回“jack&jill”

因此，input.match（/jack[-&n]*jill/）覆盖了，-，n，但是“and”呢？

您可以使用可选字符类和使用
扩展模式


\bjack(?:[ &-]+|[ -]?(?:and|n)[ -]?)?jill\b




如果
n
或
和
之前和之后的内容应该相同，则可以对之前的零件使用捕获组，并使用反向引用匹配之后的相同内容


\bjack(?:[ &-]+|([ -]?)(?:and|n)\1)?jill\b


解释


--------------------------------------------------------------------------------
  \b                       the boundary between a word char (\w) and
                           something that is not a word char
--------------------------------------------------------------------------------
  (                        group and capture to \1:
--------------------------------------------------------------------------------
    jack                     'jack'
--------------------------------------------------------------------------------
  )                        end of \1
--------------------------------------------------------------------------------
  [\s&-]*                  any character of: whitespace (\n, \r, \t,
                           \f, and " "), '&', '-' (0 or more times
                           (matching the most amount possible))
--------------------------------------------------------------------------------
  (?:                      group, but do not capture (optional
                           (matching the most amount possible)):
--------------------------------------------------------------------------------
    (?:                      group, but do not capture:
--------------------------------------------------------------------------------
      n                        'n'
--------------------------------------------------------------------------------
     |                        OR
--------------------------------------------------------------------------------
      and                      'and'
--------------------------------------------------------------------------------
    )                        end of grouping
--------------------------------------------------------------------------------
    [\s&-]*                  any character of: whitespace (\n, \r,
                             \t, \f, and " "), '&', '-' (0 or more
                             times (matching the most amount
                             possible))
--------------------------------------------------------------------------------
  )?                       end of grouping
--------------------------------------------------------------------------------
  (                        group and capture to \2:
--------------------------------------------------------------------------------
    jill                     'jill'
--------------------------------------------------------------------------------
  )                        end of \2
--------------------------------------------------------------------------------
  \b                       the boundary between a word char (\w) and
                           something that is not a word char



    

  • \b确认
    单词边界，然后匹配杰克
    • 

  • （？：
    非捕获组

      

    • [&-]+
      匹配空格、
      &
      或
      -
      • 

    • |
      或
      • 

    • （[-]？）
      可以选择在捕获组1中匹配空格或
      -
      • 

    • （？：和| n）
      匹配
      和
      或
      n
      • 

    • \1
      反向引用组1中捕获的内容
      • 

    

    • 

  • ）？
    关闭组并将ik设置为可选
    • 

  • jill\b
    匹配
    jill
    后跟单词边界
    • 



您可以使用可选字符类和使用
|


\bjack(?:[ &-]+|[ -]?(?:and|n)[ -]?)?jill\b




如果
n
或
和
之前和之后的内容应该相同，则可以对之前的零件使用捕获组，并使用反向引用匹配之后的相同内容


\bjack(?:[ &-]+|([ -]?)(?:and|n)\1)?jill\b


解释


--------------------------------------------------------------------------------
  \b                       the boundary between a word char (\w) and
                           something that is not a word char
--------------------------------------------------------------------------------
  (                        group and capture to \1:
--------------------------------------------------------------------------------
    jack                     'jack'
--------------------------------------------------------------------------------
  )                        end of \1
--------------------------------------------------------------------------------
  [\s&-]*                  any character of: whitespace (\n, \r, \t,
                           \f, and " "), '&', '-' (0 or more times
                           (matching the most amount possible))
--------------------------------------------------------------------------------
  (?:                      group, but do not capture (optional
                           (matching the most amount possible)):
--------------------------------------------------------------------------------
    (?:                      group, but do not capture:
--------------------------------------------------------------------------------
      n                        'n'
--------------------------------------------------------------------------------
     |                        OR
--------------------------------------------------------------------------------
      and                      'and'
--------------------------------------------------------------------------------
    )                        end of grouping
--------------------------------------------------------------------------------
    [\s&-]*                  any character of: whitespace (\n, \r,
                             \t, \f, and " "), '&', '-' (0 or more
                             times (matching the most amount
                             possible))
--------------------------------------------------------------------------------
  )?                       end of grouping
--------------------------------------------------------------------------------
  (                        group and capture to \2:
--------------------------------------------------------------------------------
    jill                     'jill'
--------------------------------------------------------------------------------
  )                        end of \2
--------------------------------------------------------------------------------
  \b                       the boundary between a word char (\w) and
                           something that is not a word char



    

  • \b确认
    单词边界，然后匹配杰克
    • 

  • （？：
    非捕获组

      

    • [&-]+
      匹配空格、
      &
      或
      -
      • 

    • |
      或
      • 

    • （[-]？）
      可以选择在捕获组1中匹配空格或
      -
      • 

    • （？：和| n）
      匹配
      和
      或
      n
      • 

    • \1
      反向引用组1中捕获的内容
      • 

    

    • 

  • ）？
    关闭组并将ik设置为可选
    • 

  • jill\b
    匹配
    jill
    后跟单词边界
    • 



您可以用
\bjack.*？jill\b
替换
杰克[-&n]*jill

详细信息：


    

  • *？
    ：杰克和吉尔之间的任何信件
    • 

  • \b
    ：单词边界
    • 



您可以用
\bjack.*？jill\b
替换
杰克[-&n]*jill

详细信息：


    

  • *？
    ：杰克和吉尔之间的任何信件
    • 

  • \b
    ：单词边界
    • 


使用


replace(/\b(jack)[\s&-]*(?:(?:n|and)[\s&-]*)?(jill)\b/gi, '$1 & $2')


看

*解释


--------------------------------------------------------------------------------
  \b                       the boundary between a word char (\w) and
                           something that is not a word char
--------------------------------------------------------------------------------
  (                        group and capture to \1:
--------------------------------------------------------------------------------
    jack                     'jack'
--------------------------------------------------------------------------------
  )                        end of \1
--------------------------------------------------------------------------------
  [\s&-]*                  any character of: whitespace (\n, \r, \t,
                           \f, and " "), '&', '-' (0 or more times
                           (matching the most amount possible))
--------------------------------------------------------------------------------
  (?:                      group, but do not capture (optional
                           (matching the most amount possible)):
--------------------------------------------------------------------------------
    (?:                      group, but do not capture:
--------------------------------------------------------------------------------
      n                        'n'
--------------------------------------------------------------------------------
     |                        OR
--------------------------------------------------------------------------------
      and                      'and'
--------------------------------------------------------------------------------
    )                        end of grouping
--------------------------------------------------------------------------------
    [\s&-]*                  any character of: whitespace (\n, \r,
                             \t, \f, and " "), '&', '-' (0 or more
                             times (matching the most amount
                             possible))
--------------------------------------------------------------------------------
  )?                       end of grouping
--------------------------------------------------------------------------------
  (                        group and capture to \2:
--------------------------------------------------------------------------------
    jill                     'jill'
--------------------------------------------------------------------------------
  )                        end of \2
--------------------------------------------------------------------------------
  \b                       the boundary between a word char (\w) and
                           something that is not a word char


JavaScript:



const text=“jackjill | jack jill | jack&jill | jack&jill | jack-&-jill | jack and jill | jack and jill | jack n jill jack认识jill”；
console.log（text.replace（/\b（jack）[\s&-]*（？：（？：n |和）[\s&-]*）？（jill）\b/gi，$1和$2'）使用

看

*解释


--------------------------------------------------------------------------------
  \b                       the boundary between a word char (\w) and
                           something that is not a word char
--------------------------------------------------------------------------------
  (                        group and capture to \1:
--------------------------------------------------------------------------------
    jack                     'jack'
--------------------------------------------------------------------------------
  )                        end of \1
--------------------------------------------------------------------------------
  [\s&-]*                  any character of: whitespace (\n, \r, \t,
                           \f, and " "), '&', '-' (0 or more times
                           (matching the most amount possible))
--------------------------------------------------------------------------------
  (?:                      group, but do not capture (optional
                           (matching the most amount possible)):
--------------------------------------------------------------------------------
    (?:                      group, but do not capture:
--------------------------------------------------------------------------------
      n                        'n'
--------------------------------------------------------------------------------
     |                        OR
--------------------------------------------------------------------------------
      and                      'and'
--------------------------------------------------------------------------------
    )                        end of grouping
--------------------------------------------------------------------------------
    [\s&-]*                  any character of: whitespace (\n, \r,
                             \t, \f, and " "), '&', '-' (0 or more
                             times (matching the most amount
                             possible))
--------------------------------------------------------------------------------
  )?                       end of grouping
--------------------------------------------------------------------------------
  (                        group and capture to \2:
--------------------------------------------------------------------------------
    jill                     'jill'
--------------------------------------------------------------------------------
  )                        end of \2
--------------------------------------------------------------------------------
  \b                       the boundary between a word char (\w) and
                           something that is not a word char


JavaScript:



const text=“jackjill | jack jill | jack&jill | jack&jill | jack-&-jill | jack and jill | jack and jill | jack n jill jack认识jill”；

console.log（text.replace（/\b（jack）[\s&-]*（？：（？：n |和）[\s&-]*）？（jill）\b/gi，$1和$2'）试试这个
杰克。*？吉尔
试试这个
杰克。*？吉尔