javascript - Regular expression including wildcard character in search string -

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i want regular expression string string can contain * , ? in it. should have @ least 3 alphanumeric character in it. so,

*abc* valid *ab*c valid *aaa? valid *aa  not valid **aaa not valid not valid regular expression

this should it:

^[*?]?([0-9a-z][*?]?){3,}$

explanation:

  • ^ matches beginning of string
  • [*?]? matches optional * or ?
  • (...){3,} group must appear @ least 3 times
  • [0-9a-z][*?]? matches alphanumeric character followed optional * or ?
  • $ matches end of string

consecutive * , ? not matched.

update: forgot mention it, on mind: use i modifier make match case-insensitive (/.../i).


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