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  1. Prepare
  2. Regex
  3. Backreferences
  4. Backreferences To Failed Groups
  5. Discussions

Backreferences To Failed Groups

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178 Discussions

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  • h150473
     + 0 comments

    For javascript - var Regex_Pattern = /\d{8}|^(\d{2}-){3}\d{2}$/;

  • LouieKeira
     + 0 comments

    However, some flavors, like JavaScript, treat backreferences to non-participating groups as matching an empty string, allowing the overall match to succeed. Betbhai9 login

  • lari_fossato
     + 1 comment

    Regex_Pattern = r"\d{8}|^(\d\d)(-\d\d){2}-(\d\d)$"

  • tdkhoa73
     + 0 comments

    ^\d{2}(-?)\d{2}(\1\d{2}){2}$

  • ashutoshpatel028
     + 1 comment

    ^(\d\d)(\-?)\1\2\1\2\1$

    why this wont work in JAVA? Group1 = (\d\d) Group2 = (\-?)