RegExp « Regular Expressions « Flash / Flex / ActionScript






  1. Flash / Flex / ActionScript
  2. Regular Expressions
  3. RegExp
1.Creating a Regular Expression Object
2.Case-insensitive, you can add the i flag:
3.To flag it to match globally and multiline, the following will work:
4.Regular expression /\w/ is created in ActionScript
5.Matching Using a Regular Expression Object
6.To know whether at least one match exists.
7.Use the exec() method.
8.RegExp("(A|BC)* *(A);*(B)* *(C)* *(A|B|C)*", "i")
9.String Methods and Regular Expressions




10.To escape a character, simply preface it with a backslash (\). This goes for the backslash character as well.
11.Use ranges with the dash character (-), and you can have multiple ranges in one character class, as well as combine ranges with single characters
12.invert a character class by using a caret (^) immediately after the open bracket ([).
13.Quantifiers
14.To match an optional character or sequence, use the question mark quantifier (?).
15.(*) quantifier matches zero or more times: