How to match “any character” in regular expression?

Question

The following should be matched:

AAA123
ABCDEFGH123
XXXX123

can I do: \".*123\" ?

Answer 1

[^] should match any character, including newline. [^CHARS] matches all characters except for those in CHARS. If CHARS is empty, it matches all characters.

JavaScript example:

/a[^]*Z/.test("abcxyz \0\r\n\t012789ABCXYZ") // Returns ‘true’.